# ![@brankopetric00 Avatar](https://lunarcrush.com/gi/w:26/cr:twitter::1157414015666184192.png) @brankopetric00 Branko

A recent AWS outage was caused by a DNS problem that hit the AWS DynamoDB endpoint, making it unavailable for services to access. The issue was fixed in about [--] hours, but then another issue arose with EC2, the system that creates virtual servers. This incident highlights the importance of having a robust disaster recovery plan and being prepared for such outages.

### Engagements: [------] [#](/creator/twitter::1157414015666184192/interactions)
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- [--] Week [-------] -41%
- [--] Month [---------] +79%
- [--] Months [----------] +4,692%
- [--] Year [----------] +2,604%

### Mentions: [--] [#](/creator/twitter::1157414015666184192/posts_active)
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- [--] Week [---] +4%
- [--] Month [---] +31%
- [--] Months [---] +1,313%
- [--] Year [---] +1,779%

### Followers: [------] [#](/creator/twitter::1157414015666184192/followers)
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- [--] Week [------] +0.96%
- [--] Month [------] +18%
- [--] Months [------] +349%
- [--] Year [------] +658%

### CreatorRank: [-------] [#](/creator/twitter::1157414015666184192/influencer_rank)
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### Social Influence

**Social category influence**
[technology brands](/list/technology-brands)  30.1% [finance](/list/finance)  7.77% [social networks](/list/social-networks)  2.91% [stocks](/list/stocks)  2.91% [countries](/list/countries)  0.97% [automotive brands](/list/automotive-brands)  0.97%

**Social topic influence**
[lambda](/topic/lambda) #30, [ai](/topic/ai) 5.83%, [redis](/topic/redis) #13, [openclaw](/topic/openclaw) #934, [what is](/topic/what-is) #3128, [fine](/topic/fine) 3.88%, [twitter](/topic/twitter) 2.91%, [command](/topic/command) 2.91%, [code](/topic/code) 2.91%, [we are](/topic/we-are) 2.91%

**Top accounts mentioned or mentioned by**
[@navneet_rabdiya](/creator/undefined) [@hryz3](/creator/undefined) [@ashokumar89](/creator/undefined) [@bryistheguy](/creator/undefined) [@grok](/creator/undefined) [@summerinnp](/creator/undefined) [@jamespauldev](/creator/undefined) [@dorianborovina](/creator/undefined) [@suyogv70](/creator/undefined) [@wildpinesai](/creator/undefined) [@jc50000000](/creator/undefined) [@manschutz](/creator/undefined) [@tamecalm](/creator/undefined) [@akashbitm787](/creator/undefined) [@dazzbuilds](/creator/undefined) [@suhailtechtalks](/creator/undefined) [@devi__devs](/creator/undefined) [@travestynv](/creator/undefined) [@primate12172502](/creator/undefined) [@coastalanglr](/creator/undefined)

**Top assets mentioned**
[Alphabet Inc Class A (GOOGL)](/topic/$googl)
### Top Social Posts
Top posts by engagements in the last [--] hours

"You are scaling a read-heavy database. You add [--] Read Replicas. Latency drops. Success But now users complain: 'I updated my profile but when I refresh I see the old data.' This is 'Replication Lag'. How do you implement 'Sticky Reads' (aka 'Read Your Own Writes') at the application or proxy level to ensure a user always reads from the master *immediately* after a write"  
[X Link](https://x.com/brankopetric00/status/2022419794297778292)  2026-02-13T21:17Z 18.9K followers, 15.9K engagements


"A well-structured monolith can scale further than your resume-driven microservices mess ever will. You aren't separating concerns you are just adding latency and network failures"  
[X Link](https://x.com/brankopetric00/status/2022463583200633201)  2026-02-14T00:11Z 18.9K followers, [----] engagements


"Docker Compose in production gets you laughed at on Twitter. But it actually works it's simple and your 3-person team can understand it. Sometimes the uncool choice is the right choice"  
[X Link](https://x.com/brankopetric00/status/2021300426327441773)  2026-02-10T19:09Z 18.9K followers, 126.3K engagements


"You are testing a caching layer (Redis). You request a key that doesn't exist. The cache misses. The app queries the database. The database returns 'Not Found'. The app does *not* cache 'Not Found'. An attacker sends [--] million random keys. Every request bypasses the cache and hits the database. What is 'Cache Penetration' and why must you cache 'Negative Results' (null values) to protect the backend https://twitter.com/i/web/status/2022551162629619936 https://twitter.com/i/web/status/2022551162629619936"  
[X Link](https://x.com/brankopetric00/status/2022551162629619936)  2026-02-14T05:59Z 18.9K followers, 29.8K engagements


"Scaled from [----] to [------] users. Here's what broke. At [----] users: - Single database became the bottleneck - Added read replicas At [-----] users: - Session storage overwhelmed Redis - Switched to JWT tokens At [-----] users: - File uploads killed our servers - Moved to S3 with presigned URLs At [-----] users: - Search became unusable - Implemented Elasticsearch At [------] users: - DNS became single point of failure - Multi-region with Route53 failover Every stage felt like the final architecture. None of them were. Scaling isn't a destination. It's a continuous series of bottleneck discoveries."  
[X Link](https://x.com/brankopetric00/status/2011561755927826910)  2026-01-14T22:11Z 18.8K followers, 339.4K engagements


"Your PostgreSQL database is hitting the wall. Current state: - RDS db.r5.4xlarge (16 vCPU 128GB RAM) - 4TB storage [-----] IOPS provisioned - [----] connections at peak (using PgBouncer) - Write-heavy: 70% writes 30% reads - Replication lag to read replica: 500ms average - Largest table: 800GB [--] billion rows Symptoms: - Query latency spiking during batch jobs - Vacuum taking 6+ hours - Storage growing 100GB/month Constraints: - Zero downtime requirement - Budget for one major change What's your scaling strategy https://twitter.com/i/web/status/2015899043541459434"  
[X Link](https://x.com/brankopetric00/status/2015899043541459434)  2026-01-26T21:26Z 18.9K followers, 57.5K engagements


"The CTO wants to migrate a legacy Monolith (Java/Spring) to Microservices. Constraints: - Zero downtime allowed for customers - The monolith shares a single massive Oracle database - 500+ database tables heavily joined Do you: A. Break the code first keeping the shared DB then split the DB later B. Split the DB first into domains then break the code What is your sequence of operations https://twitter.com/i/web/status/2016377949176701042 https://twitter.com/i/web/status/2016377949176701042"  
[X Link](https://x.com/brankopetric00/status/2016377949176701042)  2026-01-28T05:09Z 18.8K followers, 68K engagements


"A developer accidentally deleted a Git branch that contained [--] weeks of work. - It was never pushed to remote. - They ran git branch -D feature/login. Is the code gone forever If not what specific git command allows you to find the dangling commit hash"  
[X Link](https://x.com/brankopetric00/status/2016438347229732866)  2026-01-28T09:09Z 18.8K followers, 639.4K engagements


"http://x.com/i/article/2016415152707379201 http://x.com/i/article/2016415152707379201"  
[X Link](https://x.com/brankopetric00/status/2016666543933788420)  2026-01-29T00:15Z 18.7K followers, 117.4K engagements


""Serverless" is the most successful marketing term of the last decade. You've traded managing servers for managing YAML files IAM permissions cold starts and a massive AWS bill you can't decipher"  
[X Link](https://x.com/brankopetric00/status/2016955505294660033)  2026-01-29T19:24Z 18.7K followers, 45.6K engagements


"Within [--] seconds of spinning up a fresh VPS someone is already trying to break in. Not paranoia. Data. I set up a honeypot last month. No DNS no announcements just a raw IP. Within the first hour over [---] SSH login attempts. Bots scan the entire internet constantly looking for: - Default credentials - Unpatched software - Exposed databases - Misconfigured services Most servers I audit have the same problems: - Root login enabled with password auth - SSH on port [--] with no rate limiting - No firewall configured - Updates not applied in months - Services running that nobody remembers"  
[X Link](https://x.com/brankopetric00/status/2017299018494497169)  2026-01-30T18:09Z 18.8K followers, 180.8K engagements


"You need to patch a critical vulnerability on [---] production EC2 instances running Linux. Constraints: - You cannot reboot them all at once. - You cannot SSH into them one by one. - They are in private subnets with no internet access (they use VPC endpoints for AWS services). What native AWS tool is designed specifically for this task allowing you to run a shell command across the fleet with controlled concurrency https://twitter.com/i/web/status/2017344854057975962 https://twitter.com/i/web/status/2017344854057975962"  
[X Link](https://x.com/brankopetric00/status/2017344854057975962)  2026-01-30T21:11Z 18.7K followers, 54.7K engagements


"You need to deploy a Python script that runs once a day at [--] AM processes a 500MB file from S3 and runs for about [--] minutes. Option 1: AWS Lambda (with container image support due to size/time limits). Option 2: AWS Fargate task triggered by EventBridge. Lambda seems simpler but the 15-minute timeout is cutting it close if the file size grows. Which compute engine do you choose for long-term reliability and why https://twitter.com/i/web/status/2017467919018426499 https://twitter.com/i/web/status/2017467919018426499"  
[X Link](https://x.com/brankopetric00/status/2017467919018426499)  2026-01-31T05:20Z 18.7K followers, 40.4K engagements


"You are reviewing Terraform code for a new project. You see this block: resource 'aws_db_instance' 'default' allocated_storage = [--] engine = 'mysql' username = 'admin' password = var.db_password publicly_accessible = true skip_final_snapshot = true Besides the obvious 'publicly_accessible = true' identify two other critical security risks in this configuration block. https://twitter.com/i/web/status/2017496860965978458 https://twitter.com/i/web/status/2017496860965978458"  
[X Link](https://x.com/brankopetric00/status/2017496860965978458)  2026-01-31T07:15Z 18.7K followers, 22.4K engagements


"Interview question: You join a company and find this setup: - All infrastructure is manually created in AWS console - Deployments are SSH + git pull on each server - Monitoring is CloudWatch default dashboards - Backups are "someone runs a script on Fridays" - [--] engineers [--] services growing fast You have one year to modernize this. How do you prioritize and what do you tackle first https://twitter.com/i/web/status/2017576346050777462 https://twitter.com/i/web/status/2017576346050777462"  
[X Link](https://x.com/brankopetric00/status/2017576346050777462)  2026-01-31T12:31Z 18.7K followers, 42.3K engagements


"Kubernetes was built by Google to run millions of containers across a global fleet. You're running a Django app with [---] users on a $3000/month EKS cluster. Stop it. I've seen 3-person startups hire "platform teams" to babysit their cluster. Six-month migrations for apps that ran perfectly fine on a $50 VPS. Engineers debugging YAML at [--] AM for problems that didn't need to exist. You don't have a scaling problem. You have a resume-driven development problem. Docker Compose exists. Railway exists. A single VPS exists. "But we might scale" You won't. And if you do migrating later is easier than"  
[X Link](https://x.com/brankopetric00/status/2017678770853814716)  2026-01-31T19:18Z 18.8K followers, 196.9K engagements


"Your team needs to share state between microservices. Option A: Redis cluster - Sub-millisecond latency - Another component to manage - Risk of cache invalidation bugs Option B: Event-driven with Kafka - Eventually consistent - Better audit trail - Higher latency for reads Option C: Direct database queries - Always consistent - Coupling between services - Could become bottleneck Context: - [-----] requests/minute - Data changes every [--] seconds on average - Team has Redis experience but not Kafka Which architecture do you pick and why https://twitter.com/i/web/status/2017700413118812537"  
[X Link](https://x.com/brankopetric00/status/2017700413118812537)  2026-01-31T20:44Z 18.8K followers, 23.7K engagements


"The obsession with putting everything in a container has to stop. "We should containerize our PostgreSQL database" said someone who has never managed stateful data in their life. Not everything is a stateless 12-factor app. You're adding a layer of abstraction performance overhead and operational complexity for literally zero benefit. Use a managed database service. Stop trying to Dockerize things that want to live on a file system. https://twitter.com/i/web/status/2017734053277880730 https://twitter.com/i/web/status/2017734053277880730"  
[X Link](https://x.com/brankopetric00/status/2017734053277880730)  2026-01-31T22:57Z 18.7K followers, 47.4K engagements


"The [--] stages of cloud cost grief: [--]. Denial: "The cloud is cheaper than on-prem Look at this calculator" [--]. Anger: "Why is our AWS bill $80000 This is an outrage" [--]. Bargaining: "Maybe if we use spot instances and Savings Plans." [--]. Depression: "Stares at the Cost Explorer dashboard for [--] hours" [--]. Acceptance: "We are now a FinOps company that occasionally writes code." The cloud isn't cheap. It's a convenience you pay a premium for. https://twitter.com/i/web/status/2017756784572965340 https://twitter.com/i/web/status/2017756784572965340"  
[X Link](https://x.com/brankopetric00/status/2017756784572965340)  2026-02-01T00:28Z 18.7K followers, 56.3K engagements


"Your startup is choosing a database for user activity tracking. Requirements: - 500M events/day - Query patterns: time-range aggregations user-specific lookups - 90-day retention then archive - Budget: tight Option A: TimescaleDB - Familiar SQL - Compression built-in - Scaling gets expensive Option B: ClickHouse - Insane query speed - Steeper learning curve - Self-managed complexity Option C: S3 + Athena - Cheapest storage - Pay per query - Cold start latency Your team has [--] backend engineers. No dedicated DBA. Which path do you take"  
[X Link](https://x.com/brankopetric00/status/2017919104577855891)  2026-02-01T11:13Z 18.8K followers, 46.1K engagements


"Alert: Lambda function duration exceeded threshold. The function: - Processes SQS messages - Writes to DynamoDB - Ran fine for [--] months Current state: - Duration jumped from 200ms to [--] seconds - DynamoDB latency shows 2ms average - SQS shows no backlog - Memory usage: 40% of allocated - Cold starts account for only 3% of invocations - CloudWatch shows the delay happens BEFORE any DynamoDB calls Code hasn't changed in [--] weeks. What's causing the 14-second delay https://twitter.com/i/web/status/2017999509390012687 https://twitter.com/i/web/status/2017999509390012687"  
[X Link](https://x.com/brankopetric00/status/2017999509390012687)  2026-02-01T16:32Z 18.8K followers, 11.9K engagements


"Your Nginx logs show the client IP for every request is 10.0.0.5 (The Load Balancer's IP). You want the real user IP. You enable 'X-Forwarded-For' on the Load Balancer. However you are using a TCP (Layer 4) Load Balancer for performance not HTTP (Layer 7). Since the LB doesn't inspect packets it can't inject an HTTP header. What protocol extension must you enable on both the ELB and Nginx to pass the client IP connection information https://twitter.com/i/web/status/2018354744813613406 https://twitter.com/i/web/status/2018354744813613406"  
[X Link](https://x.com/brankopetric00/status/2018354744813613406)  2026-02-02T16:04Z 18.8K followers, 98.7K engagements


"Two teams need to share Terraform modules. Team A: - Uses Terraform Cloud - Module versioning via git tags - Strict PR review process - Everything in one mono-repo Team B: - Uses S3 backend with DynamoDB locking - Modules pulled from direct git URLs - No versioning always uses main branch - Each project in separate repos Management wants standardization. Constraints: - Both teams have 2+ years of infrastructure in their current setup - Migration budget: [--] weeks of eng time - Cannot have any downtime during transition - Need to maintain audit trail What's your standardization approach"  
[X Link](https://x.com/brankopetric00/status/2018416647346749943)  2026-02-02T20:10Z 18.8K followers, 11.4K engagements


"Your team is designing a new event-driven system. Option A: Amazon SQS + Lambda - Simple to set up - Auto-scaling built-in - $0.40 per million requests - Max message size 256KB - No ordering guarantees (standard queue) Option B: Amazon MSK (Kafka) - Complex to manage - Need to provision brokers - $2000/month minimum - Unlimited message size - Strict ordering replay capability Your requirements: - [-----] events/hour average - Events are 2KB each - Order matters for 30% of event types - Team has no Kafka experience Which do you choose and why https://twitter.com/i/web/status/2018417136214135215"  
[X Link](https://x.com/brankopetric00/status/2018417136214135215)  2026-02-02T20:12Z 18.8K followers, 22.7K engagements


"AWS bill breakdown for a mid-size SaaS: EC2: $8400/month - Mix of on-demand instances - No Reserved Instances or Savings Plans RDS: $3200/month - Multi-AZ PostgreSQL - 4TB storage only 800GB used Data Transfer: $4100/month - NAT Gateway: $2800 - Cross-region replication: $900 - CloudFront: $400 S3: $1800/month - 50TB total - 80% hasn't been accessed in [--] months Total: $17500/month Your CEO wants it under $10000 without touching prod reliability. What's your 90-day optimization plan https://twitter.com/i/web/status/2018451377702203858 https://twitter.com/i/web/status/2018451377702203858"  
[X Link](https://x.com/brankopetric00/status/2018451377702203858)  2026-02-02T22:28Z 18.8K followers, 34.8K engagements


"We are migrating from a Monolith to Microservices. The Frontend is currently a giant JSP application. We want to start routing specific URL paths (e.g. /api/cart) to a new Golang microservice while keeping / on the legacy app. We put an Application Load Balancer in front. How do you configure the ALB 'Listener Rules' to achieve this traffic splitting based on the URL path https://twitter.com/i/web/status/2018564627819291084 https://twitter.com/i/web/status/2018564627819291084"  
[X Link](https://x.com/brankopetric00/status/2018564627819291084)  2026-02-03T05:58Z 18.8K followers, 12K engagements


"You are designing the logging strategy for a banking app. Compliance requires: 'Audit logs must be preserved for [--] years and cannot be modified or deleted by ANYONE including root admins.' Approach A: Send logs to a separate AWS account with restrictive IAM policies. Approach B: Send logs to an S3 Bucket with Object Lock (WORM model) enabled. Which approach legally satisfies the 'immutability' requirement against a rogue administrator https://twitter.com/i/web/status/2018624020808089843 https://twitter.com/i/web/status/2018624020808089843"  
[X Link](https://x.com/brankopetric00/status/2018624020808089843)  2026-02-03T09:54Z 18.8K followers, 35.1K engagements


"We need to expose a legacy TCP service (not HTTP) running in our Private VPC to a SaaS provider (Salesforce). Security Rule: We cannot open our firewall to the entire internet (0.0.0.0/0). Constraint: The SaaS provider does not offer a static list of source IPs. We don't want to manage a VPN. What AWS networking component allows us to publish a private endpoint service that the SaaS provider can consume securely over the AWS backbone https://twitter.com/i/web/status/2018668818885730347 https://twitter.com/i/web/status/2018668818885730347"  
[X Link](https://x.com/brankopetric00/status/2018668818885730347)  2026-02-03T12:52Z 18.8K followers, 29.7K engagements


"Hey @claudeai fix this now make no mistakes Claude is not clauding https://t.co/azBChtx8A9 Claude is not clauding https://t.co/azBChtx8A9"  
[X Link](https://x.com/brankopetric00/status/2018713892445110437)  2026-02-03T15:51Z 18.7K followers, [----] engagements


"You are migrating a monolithic SQL Server to AWS. Management wants to use 'Database Migration Service' (DMS) for a minimal downtime cutover. The database uses heavy Stored Procedures and Triggers. DMS is great at moving data. Why will DMS likely fail to migrate your Stored Procedures and Secondary Indexes and what tool should you use to move the *schema* before starting the data sync https://twitter.com/i/web/status/2019019120214237676 https://twitter.com/i/web/status/2019019120214237676"  
[X Link](https://x.com/brankopetric00/status/2019019120214237676)  2026-02-04T12:04Z 18.9K followers, [----] engagements


"SRE Interview Question: What is the difference between SLI SLO and SLA - Which one is the legal contract with the customer - Which one is the internal engineering target - Which one is the actual number on the graph"  
[X Link](https://x.com/brankopetric00/status/2019199321216819317)  2026-02-05T00:00Z 18.8K followers, 12.4K engagements


"You are running a massive fleet of Spot Instances for a stateless web app. Savings are great but you get occasional [---] errors when instances are reclaimed. AWS gives a 2-minute warning before termination. You have a script that listens for this warning. What specific AWS Auto Scaling hook should you trigger with this script to force the Load Balancer to stop sending new traffic to the doomed instance immediately"  
[X Link](https://x.com/brankopetric00/status/2019260980501303708)  2026-02-05T04:05Z 18.8K followers, [----] engagements


"Someone on your team wrote this Terraform: resource "aws_s3_bucket" "data" bucket = "company-prod-data-$var.env" resource "aws_s3_bucket_versioning" "data" bucket = versioning_configuration status = "Enabled"  resource "aws_s3_bucket_public_access_block" "data" bucket = aws_s3_bucket.data.bucket block_public_acls = true block_public_policy = true ignore_public_acls = true This passed code review. There's a problem. Can you spot it http://aws_s3_bucket.data.id http://aws_s3_bucket.data.id"  
[X Link](https://x.com/brankopetric00/status/2019292942511329430)  2026-02-05T06:12Z 18.9K followers, 21.4K engagements


"Your Docker image went from 340MB to 1.2GB after a seemingly innocent change. The diff: - RUN apt-get update && apt-get install -y curl + RUN apt-get update + RUN apt-get install -y curl Why did splitting one line into two nearly quadruple the image size"  
[X Link](https://x.com/brankopetric00/status/2019421042595295425)  2026-02-05T14:41Z 18.8K followers, 155.2K engagements


"Serverless is great until you realize you need to debug a chain of [--] lambdas decoupled with SQS and SNS. Cold starts are the least of your problems"  
[X Link](https://x.com/brankopetric00/status/2019509589054504978)  2026-02-05T20:33Z 18.7K followers, [----] engagements


"Your K8s deployment has: readinessProbe: httpGet: path: /health port: [----] initialDelaySeconds: [--] periodSeconds: [--] During rolling updates you're getting 502s for about [--] seconds. The new pods pass readiness checks before receiving traffic. Old pods are terminated only after new ones are ready. maxSurge: [--] maxUnavailable: [--] This should be zero-downtime. It's not. What's causing the 502s"  
[X Link](https://x.com/brankopetric00/status/2019530980415971824)  2026-02-05T21:58Z 18.7K followers, 18.4K engagements


"You have a 5-node EKS cluster. Total allocatable CPU: [--] cores. kubectl top nodes shows 28% average CPU usage across all nodes. But new pods are stuck in Pending with: "0/5 nodes are available: [--] Insufficient cpu." 28% used. 72% free. But Kubernetes says there's no room. Explain the contradiction. https://twitter.com/i/web/status/2019691797455290698 https://twitter.com/i/web/status/2019691797455290698"  
[X Link](https://x.com/brankopetric00/status/2019691797455290698)  2026-02-06T08:37Z 18.8K followers, 15.4K engagements


"Claude Opus [---] is available make sure to claim $50 extra usage to try it settings/usage"  
[X Link](https://x.com/brankopetric00/status/2019696744351793583)  2026-02-06T08:56Z 18.7K followers, [----] engagements


"Your API serves [--] countries. Latency requirements: - US/EU: 200ms - Asia-Pacific: 200ms - South America: 300ms Current setup: Single ECS cluster in us-east-1 behind CloudFront. US: 45ms. EU: 140ms. APAC: 380ms. SA: 290ms. APAC is failing SLA. CloudFront helps with static content but your API responses aren't cacheable they're user-specific. Budget for infra: $3000/mo additional. How do you fix APAC without breaking the budget"  
[X Link](https://x.com/brankopetric00/status/2019737089558888675)  2026-02-06T11:37Z 18.7K followers, 25.8K engagements


"you can basically use claude code in the web and release features from mobile phone - connect it to the github repo - create github actions pipeline that deploys the code to server vercel or whatever - prompt claude from mobile phone"  
[X Link](https://x.com/brankopetric00/status/2019808364960927962)  2026-02-06T16:20Z 18.7K followers, [----] engagements


"This pod keeps getting evicted. The node has 8Gi of memory free. apiVersion: v1 kind: Pod metadata: name: worker spec: containers: - name: app image: myapp:latest resources: requests: memory: "2Gi" cpu: "500m" limits: memory: "4Gi" cpu: "2" - name: log-shipper image: fluentbit:latest resources: requests: memory: "512Mi" - name: metrics image: prom-exporter:latest Why is it being evicted https://twitter.com/i/web/status/2019821673273274397 https://twitter.com/i/web/status/2019821673273274397"  
[X Link](https://x.com/brankopetric00/status/2019821673273274397)  2026-02-06T17:13Z 18.9K followers, 15K engagements


"Your event-driven system processes 800K events/day through SQS. Product wants exactly-once processing. Your current setup is at-least-once with deduplication in DynamoDB. The DynamoDB dedup table costs $420/mo and adds 12ms per event. Architect proposes switching to SQS FIFO queues for exactly-once delivery. Your throughput needs: [----] messages/second at peak. SQS FIFO limit: [---] messages/second per message group. Now what"  
[X Link](https://x.com/brankopetric00/status/2019843819479396608)  2026-02-06T18:41Z 18.8K followers, 18.8K engagements


"Your PostgreSQL RDS instance: - db.r6g.2xlarge ($1400/mo) - 500GB gp3 storage - [---] connections average - Read-heavy: 92% reads 8% writes - Largest table: [---] million rows queried constantly - Current CPU: 78% average You need headroom. Three options on the table: A) Upgrade to r6g.4xlarge ($2800/mo) B) Add [--] read replicas ($2800/mo each) C) Put ElastiCache Redis in front ($800/mo) Each solves the problem differently. Each introduces a new risk. Which risk scares you least"  
[X Link](https://x.com/brankopetric00/status/2019866973723644013)  2026-02-06T20:13Z 18.8K followers, 23.4K engagements


"Your application works perfectly in staging but fails in production. Symptoms: - 30% of API requests return [---] errors - The errors are random not tied to specific endpoints - Same Docker image same environment variables - Staging has [--] containers production has [--] - Failing requests show "connection refused" to an internal microservice - That microservice is running and healthy - When you scale production down to [--] containers the errors disappear What's different about running [--] containers vs 2"  
[X Link](https://x.com/brankopetric00/status/2019882073268408491)  2026-02-06T21:13Z 18.8K followers, 25.7K engagements


"Developers are complaining that deployments "randomly fail." You investigate and find: - The CI/CD pipeline succeeds 70% of the time - Failures always happen at the integration test stage - Failed tests show "connection timeout" to the test database - The test database is an RDS instance shared across all pipelines - Failures spike between 10am-12pm and 2pm-4pm - On weekends the pipeline has a 99% success rate - The RDS instance shows max connections at [--] during peak failures - RDS max_connections is set to [---] The team wants to "just re-run failed pipelines." What's the actual fix"  
[X Link](https://x.com/brankopetric00/status/2019900948697510019)  2026-02-06T22:28Z 18.7K followers, [----] engagements


"You migrated your API from an EC2 instance to an ALB. Updated the Route [--] A record from the EC2 IP to an alias pointing at the ALB. TTL was set to [--] seconds. [--] hours later 15% of your users still hit the old EC2 IP. The instance is stopped. They're getting connection refused. TTL is [--] seconds. It's been [--] hours. Why are 15% of users still resolving the old IP"  
[X Link](https://x.com/brankopetric00/status/2019912273225982077)  2026-02-06T23:13Z 18.7K followers, 18.9K engagements


"The fastest way to mass a $40K/month AWS bill with zero business value is to let a developer who just finished a K8s tutorial design your production architecture"  
[X Link](https://x.com/brankopetric00/status/2020242380583235907)  2026-02-07T21:04Z 18.8K followers, 11.1K engagements


"We split our monolith into microservices to increase velocity. Reality: - Latency doubled due to network hops - Debugging a single request required checking five different logs - Interface contracts broke weekly Lesson: You usually don't need microservices. You need a modular monolith and better boundaries"  
[X Link](https://x.com/brankopetric00/status/2020450804293947593)  2026-02-08T10:53Z 18.8K followers, [----] engagements


"The goal of DevOps isn't to make developers work faster. It is to remove the fear of pressing the deploy button"  
[X Link](https://x.com/brankopetric00/status/2020481003215593827)  2026-02-08T12:53Z 18.9K followers, [----] engagements


"Using NoSQL because 'we don't know the schema yet' is a lie. You have a schema its just implicitly defined in your buggy application code and it's going to hurt you later"  
[X Link](https://x.com/brankopetric00/status/2020605345786130728)  2026-02-08T21:07Z 18.9K followers, 18.6K engagements


"Most people don't need a better content strategy. They need to post their current ideas more consistently. I've seen mediocre content with perfect consistency outperform brilliant content posted randomly. The algorithm doesn't care about your best tweet. It cares about your worst week. https://twitter.com/i/web/status/2020625477472281049 https://twitter.com/i/web/status/2020625477472281049"  
[X Link](https://x.com/brankopetric00/status/2020625477472281049)  2026-02-08T22:27Z 18.8K followers, [---] engagements


"Putting a fat VM image inside a Docker container isn't modernizing. Its just making a slower heavier VM thats harder to debug"  
[X Link](https://x.com/brankopetric00/status/2020803107706622405)  2026-02-09T10:13Z 18.8K followers, [----] engagements


"Migrating a legacy app to Docker. The app relies on cron to run scheduled tasks. In the VM world crond runs in the background. In Docker you only run one process (the app). Do you: [--]. Install cron inside the container and run a supervisor (like supervisord) to manage both [--]. Extract the cron jobs to an external scheduler (like Kubernetes CronJobs) Why is option [--] the 'Cloud Native' way"  
[X Link](https://x.com/brankopetric00/status/2020847651441524752)  2026-02-09T13:10Z 18.8K followers, 21.1K engagements


"You have a StatefulSet (MongoDB) running on Kubernetes. The node crashes physically. Kubernetes sees the node as NotReady. However it does *not* reschedule the Pod to a different node. The pod stays Terminating forever. Why does Kubernetes refuse to force-move a StatefulSet pod when the node is unreachable and what specific command must you run to unlock it https://twitter.com/i/web/status/2020882380454543615 https://twitter.com/i/web/status/2020882380454543615"  
[X Link](https://x.com/brankopetric00/status/2020882380454543615)  2026-02-09T15:28Z 18.8K followers, 11.8K engagements


"We need to process uploaded CSV files. Approach A: User uploads file - Server saves to disk - Server processes it - Returns response. Approach B: User uploads to S3 (Presigned URL) - S3 triggers Lambda - Lambda processes it - Updates DB. Why is Approach A a 'Availability Risk' for your web servers if the files are large (e.g. 500MB) and how does Approach B solve the 'Backpressure' problem https://twitter.com/i/web/status/2020970209092292835 https://twitter.com/i/web/status/2020970209092292835"  
[X Link](https://x.com/brankopetric00/status/2020970209092292835)  2026-02-09T21:17Z 18.8K followers, 16.5K engagements


"@James_paul_dev golang"  
[X Link](https://x.com/brankopetric00/status/2021182989355376714)  2026-02-10T11:22Z 18.8K followers, [---] engagements


""We're cloud-agnostic" says the team using DynamoDB Lambda SQS SNS CloudFront and Cognito. You're not cloud-agnostic. You're in a committed relationship with AWS and that's completely fine. Just stop lying"  
[X Link](https://x.com/brankopetric00/status/2021270228072624178)  2026-02-10T17:09Z 18.8K followers, [----] engagements


"We spend more time debating which JS framework to use than we do understanding the business problem we are solving. We are building faster cars to drive off cliffs"  
[X Link](https://x.com/brankopetric00/status/2021296130777129096)  2026-02-10T18:52Z 18.8K followers, [----] engagements


"You don't need Kubernetes. You need a single EC2 instance and the humility to admit your app serves [---] users. K8s didn't solve your problem it gave you [--] new ones you now call "learning opportunities.""  
[X Link](https://x.com/brankopetric00/status/2021330587634540598)  2026-02-10T21:09Z 18.8K followers, 19K engagements


"@hryz3 Let me guess ECS 😁"  
[X Link](https://x.com/brankopetric00/status/2021493915418022368)  2026-02-11T07:58Z 18.8K followers, [---] engagements


"@James_paul_dev Auth0"  
[X Link](https://x.com/brankopetric00/status/2021501097819414581)  2026-02-11T08:26Z 18.8K followers, [---] engagements


"I didn't build OpenTweet to compete with Buffer or Hootsuite. I built it because I was tired of paying $29/mo for a tweet scheduler that is built for agencies. So I made one that costs $5.99 has [--] popular AI models and does everything the expensive ones do. Sometimes the best products come from frustration. https://twitter.com/i/web/status/2021502393251144062 https://twitter.com/i/web/status/2021502393251144062"  
[X Link](https://x.com/brankopetric00/status/2021502393251144062)  2026-02-11T08:31Z 18.8K followers, [----] engagements


"Nobody talks about this but most scheduling tools cost $20-40/month. And you end up paying for [--] or [--] of them. That's over $100/month before you made a single dollar from your content. I made opentweet $5.99/mo because creators starting out shouldn't need a budget for scheduling tweets. https://twitter.com/i/web/status/2021513377483296833 https://twitter.com/i/web/status/2021513377483296833"  
[X Link](https://x.com/brankopetric00/status/2021513377483296833)  2026-02-11T09:15Z 18.8K followers, [---] engagements


"You are optimizing an AWS Lambda function. Memory: 128MB. Duration: [--] seconds. Cost: $X. You increase the Memory to 1024MB. The Duration drops to [--] second (because Lambda allocates CPU proportional to Memory). The total cost decreases. Why is paying for more memory sometimes cheaper than paying for less memory in the serverless world https://twitter.com/i/web/status/2021564122928685503 https://twitter.com/i/web/status/2021564122928685503"  
[X Link](https://x.com/brankopetric00/status/2021564122928685503)  2026-02-11T12:37Z 18.9K followers, 11.2K engagements


"you don't need mac mini to run OpenClaw"  
[X Link](https://x.com/brankopetric00/status/2021571648239894747)  2026-02-11T13:06Z 18.8K followers, [----] engagements


"Multi-cloud is the single most expensive insurance policy against a risk that will likely never happen. You are going to spend 3x the engineering effort to abstract away AWS features just to avoid a vendor lock-in that you're already paying for"  
[X Link](https://x.com/brankopetric00/status/2021590546251399465)  2026-02-11T14:22Z 18.8K followers, [----] engagements


"OpenTweet is $5.99/mo right now. This is the early adopter price. It won't last. 7-day free trial. Every feature included. If you've been thinking about getting consistent on X this is the cheapest it'll ever be. http://opentweet.io http://opentweet.io"  
[X Link](https://x.com/brankopetric00/status/2021648187241484299)  2026-02-11T18:11Z 18.8K followers, [---] engagements


"even better ui now 😎 nice ui 😎 https://t.co/q1ME1yXJtq nice ui 😎 https://t.co/q1ME1yXJtq"  
[X Link](https://x.com/brankopetric00/status/2021889356215005575)  2026-02-12T10:09Z 18.9K followers, [---] engagements


"how to 10x your X presence without spending more time: [--]. write in batches (weekend 1-2 hours) [--]. schedule the whole week ahead [--]. use AI for first drafts edit in your voice [--]. analyze what's working double down [--]. never break the chain I built OpenTweet to make steps these steps automatic. https://twitter.com/i/web/status/2021997243297870190 https://twitter.com/i/web/status/2021997243297870190"  
[X Link](https://x.com/brankopetric00/status/2021997243297870190)  2026-02-12T17:18Z 18.9K followers, [---] engagements


"Serverless is amazing until you see the bill for high-throughput workloads or try to debug a latency issue across [--] lambdas. Its not 'No Ops' its 'Different Ops' that are harder to replicate locally"  
[X Link](https://x.com/brankopetric00/status/2015309911681642501)  2026-01-25T06:25Z 18.9K followers, [----] engagements


"http://x.com/i/article/2017273677989945344 http://x.com/i/article/2017273677989945344"  
[X Link](https://x.com/brankopetric00/status/2017283246254436501)  2026-01-30T17:06Z 18.9K followers, 275.6K engagements


"New startup. You're the first infrastructure hire. CTO wants the platform ready in [--] months. Option A: Kubernetes from day one - Future-proof - Steep learning curve - Longer initial setup - Easier to scale later Option B: Simple ECS + Fargate - Faster to production - Less operational overhead - Might need migration later - AWS lock-in Option C: Just EC2 + Docker Compose - Fastest MVP - Manual scaling - Technical debt guaranteed - Cheapest short-term Team size: [--] developers (none with K8s experience) Expected growth: 10x users in [--] months Funding: Series A secured What's your recommendation"  
[X Link](https://x.com/brankopetric00/status/2018461176267690397)  2026-02-02T23:07Z 18.9K followers, 247.2K engagements


"Lambda function calls an internal API Gateway endpoint. Works perfectly in dev. In production it times out after exactly [--] seconds. Every time. The API Gateway logs show the request never arrives. The Lambda is in a VPC. The API Gateway is regional (not private). Security groups allow all outbound. NACLs are default. The Lambda can reach S3 and DynamoDB just fine. Why can't it reach API Gateway https://twitter.com/i/web/status/2019601196860776847 https://twitter.com/i/web/status/2019601196860776847"  
[X Link](https://x.com/brankopetric00/status/2019601196860776847)  2026-02-06T02:37Z 18.9K followers, 22K engagements


"Your application connects to an external API. Suddenly you get SocketException: Address family not supported by protocol. Nothing changed in your code. However the external API provider just added an AAAA (IPv6) record to their DNS. Your servers are on an old VPC that doesn't support IPv6. Why did your application prefer the IPv6 address by default and how do you force it back to IPv4 without code changes"  
[X Link](https://x.com/brankopetric00/status/2020940387293200681)  2026-02-09T19:18Z 18.9K followers, [----] engagements


"We went from not having enough logs to paying Datadog $50k a month to ingest terabytes of 'INFO: user logged in' messages that nobody reads. Observability without actionable alerts is just expensive noise"  
[X Link](https://x.com/brankopetric00/status/2021317748597678546)  2026-02-10T20:18Z 18.9K followers, 15.3K engagements


"Serverless is cheap until you get a traffic spike and realize the Lambda bill costs more than a rack of dedicated servers. It is 'scale to zero' until it's 'scale to bankruptcy'"  
[X Link](https://x.com/brankopetric00/status/2021501426946671071)  2026-02-11T08:27Z 18.9K followers, 13.4K engagements


"@dorianborovina @ollama average users buying mac minis like crazy"  
[X Link](https://x.com/brankopetric00/status/2021586219063218274)  2026-02-11T14:04Z 18.9K followers, [--] engagements


"hey guys can't decide left or right"  
[X Link](https://x.com/brankopetric00/status/2021659630783672377)  2026-02-11T18:56Z 18.9K followers, [---] engagements


""What's the difference between an API Gateway Load Balancer and Reverse Proxy" Here's the simple version: Reverse Proxy - sits in front of servers forwards requests hides backend details Load Balancer - distributes traffic across multiple servers API Gateway - manages secures and orchestrates API traffic They overlap. A lot. - Nginx is a reverse proxy that can load balance - HAProxy is a load balancer that's also a reverse proxy - Kong is an API Gateway built on Nginx - AWS ALB is a load balancer with API Gateway features Stop thinking about categories. Think about features: Need to hide your"  
[X Link](https://x.com/brankopetric00/status/2021688693149344159)  2026-02-11T20:52Z 18.9K followers, [----] engagements


"We need to process uploaded CSV files. Approach A: User uploads file - Server saves to disk - Server processes it - Returns response. Approach B: User uploads to S3 (Presigned URL) - S3 triggers Lambda - Lambda processes it - Updates DB. Why is Approach A a 'Availability Risk' for your web servers if the files are large (e.g. 500MB) and how does Approach B solve the 'Backpressure' problem https://twitter.com/i/web/status/2021785588253266323 https://twitter.com/i/web/status/2021785588253266323"  
[X Link](https://x.com/brankopetric00/status/2021785588253266323)  2026-02-12T03:17Z 18.9K followers, [----] engagements


"A year from now you'll wish you started posting consistently today. The algorithm rewards consistency more than anything. Start ugly. Start imperfect. Just start. And if you need help staying consistent that's literally what I built OpenTweet for"  
[X Link](https://x.com/brankopetric00/status/2022279866196889734)  2026-02-13T12:01Z 18.9K followers, [---] engagements


""We moved to the cloud to save money" is the greatest lie in tech history. You moved to the cloud so nobody has to rack servers. Own it. Your AWS bill is a lifestyle choice not a cost optimization"  
[X Link](https://x.com/brankopetric00/status/2021240025388650638)  2026-02-10T15:09Z 18.9K followers, 33.4K engagements


"Our Docker images had [---] vulnerabilities. All from the base image. We were using ubuntu:latest. The fix: - Switched to distroless images - Reduced image size from 420MB to 28MB - Vulnerabilities dropped to [--] - Container startup time improved by 60% Then discovered our CI/CD was pulling images without verification. Added: - Image signing with Cosign - Vulnerability scanning in pipeline - Admission controller to block unsigned images Security and performance often align. Smaller surface area equals fewer problems"  
[X Link](https://x.com/anyuser/status/1980643123320471971)  2025-10-21T14:31Z 18.9K followers, 398.3K engagements


"Kubernetes migration almost killed our startup. Where we were: - [--] EC2 instances - Ansible for deploys - Boring but working - $1200/month AWS bill Why we migrated: - New investor wanted 'cloud-native' - Engineers wanted K8s experience - Competitors were using it - Seemed like the future [--] months later: - [--] engineers spending full-time on K8s - AWS bill at $4500/month - Deploys took longer than before - More outages not fewer - Product development stalled We rolled back: - Moved to ECS Fargate - [--] week migration - Back to $1800/month - Engineers back on features K8s is amazing for scale. We"  
[X Link](https://x.com/anyuser/status/1986276714364731478)  2025-11-06T03:37Z 18.9K followers, 1.4M engagements


"Senior DevOps Interview: What happens when you type google.com into your browser and hit Enter Focus specifically on the TCP/IP stack. [--]. ARP request (to find the gateway MAC). [--]. DNS (UDP). [--]. TCP 3-Way Handshake (SYN SYN-ACK ACK). [--]. TLS Handshake. [--]. HTTP GET. Which of these steps is skipped if you visit the site a second time (Keep-Alive) https://twitter.com/i/web/status/2021367074145075299 https://twitter.com/i/web/status/2021367074145075299"  
[X Link](https://x.com/brankopetric00/status/2021367074145075299)  2026-02-10T23:34Z 18.9K followers, 86.7K engagements


"You are designing a 'Like' button for a viral post. Expected traffic: [------] likes per second. Database: MySQL. Problem: Updating a single row (UPDATE posts SET likes = likes + [--] WHERE id = 1) locks that row. All [------] requests serialize killing performance. Solution: You use Redis INCR. But if Redis crashes you lose the likes. What 'Write-Behind' or 'Buffering' pattern allows you to capture high-speed writes in memory and persist them to SQL in batches safely"  
[X Link](https://x.com/brankopetric00/status/2021648176717930988)  2026-02-11T18:11Z 18.9K followers, 29.7K engagements


"Vibe coders are spinning up OpenClaw agents with zero understanding of the networking stack they just exposed. Just because the AI wrote the YAML doesn't mean the YAML isn't a massive security liability"  
[X Link](https://x.com/brankopetric00/status/2022234381763658207)  2026-02-13T09:00Z 18.9K followers, [----] engagements


"You are importing an existing AWS resource into Terraform. terraform import aws_s3_bucket.b my-bucket Import successful Then you run terraform plan. Terraform says: 'Plan: [--] to add [--] to change [--] to destroy'. Wait I just imported it. Why does it want to change it Reason: Your local code doesn't match the actual configuration of the imported resource (e.g. missing tags). Why is terraform import only half the battle (State) and how do you sync the Code to match https://twitter.com/i/web/status/2022388839369638154 https://twitter.com/i/web/status/2022388839369638154"  
[X Link](https://x.com/brankopetric00/status/2022388839369638154)  2026-02-13T19:14Z 18.9K followers, [----] engagements


"A backup isn't a backup until you have successfully restored from it. Until then it is just a very expensive file upload called 'Schrdinger's Data'"  
[X Link](https://x.com/brankopetric00/status/2022400918394679499)  2026-02-13T20:02Z 18.9K followers, 143K engagements


"Using a NoSQL database for financial transactions because you were too lazy to learn SQL joins is criminal negligence. ACID compliance exists for a reason stop trying to reinvent consistency"  
[X Link](https://x.com/brankopetric00/status/2022433383649820689)  2026-02-13T22:11Z 18.9K followers, 50.7K engagements


"There are thousands of employees running OpenClaw on corporate machines without IT knowing. These shadow AI deployments are the biggest unmonitored backdoors into the enterprise since the unsecured printer era"  
[X Link](https://x.com/brankopetric00/status/2022442947300479198)  2026-02-13T22:49Z 18.9K followers, [----] engagements


"Over [-----] OpenClaw instances are currently vulnerable to RCE. That is [-----] servers that could be turned into a crypto-miner or a launchpad for an internal network attack in seconds"  
[X Link](https://x.com/brankopetric00/status/2022485476599333095)  2026-02-14T01:38Z 18.9K followers, [----] engagements


"If you didn't change the default gateway binding your OpenClaw instance is currently shouting hello to the entire public internet. Binding to 0.0.0.0 by default isn't a feature it is a standing invitation for every botnet on the planet to audit your life"  
[X Link](https://x.com/brankopetric00/status/2022507372338393477)  2026-02-14T03:05Z 18.9K followers, [----] engagements


"You are debugging a Java app that is consuming 100% Memory. You take a Heap Dump. The Heap is only 500MB. The container is using 4GB. Where is the missing 3.5GB It turns out the app uses 'Direct Byte Buffers' (NIO) for high-performance I/O. Why is 'Off-Heap' memory invisible to standard garbage collection tools and how do you monitor it https://twitter.com/i/web/status/2022573057311735991 https://twitter.com/i/web/status/2022573057311735991"  
[X Link](https://x.com/brankopetric00/status/2022573057311735991)  2026-02-14T07:26Z 18.9K followers, 24K engagements


"You use AWS Lambda connected to a relational database (RDS). Traffic spikes to [-----] concurrent functions. Each function opens a database connection. The database crashes (Too many connections). You cannot increase max_connections infinitely. What is the 'RDS Proxy' service and how does it allow thousands of Lambdas to share a small pool of persistent database connections https://twitter.com/i/web/status/2022594953046536214 https://twitter.com/i/web/status/2022594953046536214"  
[X Link](https://x.com/brankopetric00/status/2022594953046536214)  2026-02-14T08:53Z 18.9K followers, 14.8K engagements


"Your Docker build takes [--] minutes. RUN apt-get update && apt-get install -y gcc make python3-dev This runs on every commit. Why should you create a separate 'Base Image' containing these heavy dependencies push it to the registry and use FROM my-base-image in your application Dockerfile"  
[X Link](https://x.com/brankopetric00/status/2022616847913267456)  2026-02-14T10:20Z 18.9K followers, [----] engagements


"You manage a massive Terraform state file. terraform plan takes [--] minutes just to 'Refresh State'. You are not changing 99% of the resources. How do you use the -target flag (carefully) to plan/apply only a specific module or better yet how do you split your state into smaller 'Layered' states https://twitter.com/i/web/status/2022638744340238525 https://twitter.com/i/web/status/2022638744340238525"  
[X Link](https://x.com/brankopetric00/status/2022638744340238525)  2026-02-14T11:47Z 18.9K followers, [----] engagements


"🚨 Releasing OpenTweet public API 🚨"  
[X Link](https://x.com/brankopetric00/status/2022673163667280051)  2026-02-14T14:03Z 18.9K followers, [----] engagements


"ClawHub is a minefield of over [---] malicious skills. Stop treating third-party AI plugins like they are verified silver bullets for productivity. Double check what you're installing"  
[X Link](https://x.com/brankopetric00/status/2022676624295272909)  2026-02-14T14:17Z 18.9K followers, [----] engagements


"most AI-generated tweets sound like a press release generic over-polished zero personality. AI doesn't write great tweets. you do. AI just gets you there faster. the trick: give it your voice generate multiple drafts then edit ruthlessly. 80% AI 20% you = tweets that sound human but take 1/5 the time. wrote a full breakdown on the exact prompts + workflow I use"  
[X Link](https://x.com/brankopetric00/status/2022686459338064022)  2026-02-14T14:56Z 18.9K followers, [---] engagements


"https://opentweet.io/blog/ai-tweet-generation-write-better-tweets https://opentweet.io/blog/ai-tweet-generation-write-better-tweets"  
[X Link](https://x.com/brankopetric00/status/2022686461590462688)  2026-02-14T14:56Z 18.9K followers, [---] engagements


"You are building a 'Leaderboard' for a game. Requirement: Real-time updates for [--] million players. Database: DynamoDB. Problem: Everyone wants to see the 'Top 10' players. If [--] million users query the 'Top 10' partition key every second you will get a 'Hot Partition' error. How do you use 'Write Sharding' (adding a random suffix to the partition key) to distribute the writes and 'Scatter-Gather' to read the results back efficiently"  
[X Link](https://x.com/brankopetric00/status/2022705924482162789)  2026-02-14T16:14Z 18.9K followers, [----] engagements

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