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# ![@arjay_mccandless Avatar](https://lunarcrush.com/gi/w:26/cr:tiktok::7352567358922097710.png) @arjay_mccandless Arjay McCandless

Arjay McCandless posts on TikTok about if you, money, what is, javascript the most. They currently have XXXXXX followers and XXX posts still getting attention that total XXXXXX engagements in the last XX hours.

### Engagements: XXXXXX [#](/creator/tiktok::7352567358922097710/interactions)
![Engagements Line Chart](https://lunarcrush.com/gi/w:600/cr:tiktok::7352567358922097710/c:line/m:interactions.svg)

- X Week XXXXXXXXX +345%
- X Month XXXXXXXXX +154%
- X Months XXXXXXXXXX +299%
- X Year XXXXXXXXXX +1,054%

### Mentions: XX [#](/creator/tiktok::7352567358922097710/posts_active)
![Mentions Line Chart](https://lunarcrush.com/gi/w:600/cr:tiktok::7352567358922097710/c:line/m:posts_active.svg)

- X Month XXX -XX%
- X Months XXX +19%
- X Year XXX +153%

### Followers: XXXXXX [#](/creator/tiktok::7352567358922097710/followers)
![Followers Line Chart](https://lunarcrush.com/gi/w:600/cr:tiktok::7352567358922097710/c:line/m:followers.svg)

- X Week XXXXXX +2.10%
- X Month XXXXXX +10%
- X Months XXXXXX +756%
- X Year XXXXXX +1,039%

### CreatorRank: XXXXXXX [#](/creator/tiktok::7352567358922097710/influencer_rank)
![CreatorRank Line Chart](https://lunarcrush.com/gi/w:600/cr:tiktok::7352567358922097710/c:line/m:influencer_rank.svg)

### Social Influence

**Social category influence**
[technology brands](/list/technology-brands)  [finance](/list/finance)  [stocks](/list/stocks)  [social networks](/list/social-networks)  [gaming](/list/gaming)  [countries](/list/countries) 

**Social topic influence**
[if you](/topic/if-you), [money](/topic/money), [what is](/topic/what-is), [javascript](/topic/javascript) #200, [stack](/topic/stack) #758, [level](/topic/level), [ai](/topic/ai), [redis](/topic/redis) #14, [imo](/topic/imo) #176, [$googl](/topic/$googl)

**Top accounts mentioned or mentioned by**
[@ethanclinick6](/creator/undefined) [@dimchig](/creator/undefined) [@squirrelzar](/creator/undefined) [@cluely](/creator/undefined) [@tiffintech](/creator/undefined) [@discountedsteak](/creator/undefined) [@lrucache](/creator/undefined) [@baxatecarter](/creator/undefined) [@free](/creator/undefined) [@jetbrains](/creator/undefined) [@allenvert](/creator/undefined)

**Top assets mentioned**
[Alphabet Inc Class A (GOOGL)](/topic/$googl) [Cloudflare, Inc. (NET)](/topic/cloudflare)
### Top Social Posts
Top posts by engagements in the last XX hours

"What is Redis Redis is your best friend for ultra low latency data storage. Like everything I cover here of course that means there are downsides. Common use cases are any data that needs near real time updates managing state within applications and caching. #csmajors #coding #programming #redis #databases"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7517404453557882167)  2025-06-18T21:29Z 68.5K followers, 151.6K engagements


"System Design Interview Blueprint This is the best blueprint I have found for system design interviews. Let me know if you guys do anything differently. #csmajors #coding #programming #systemdesign #softwareengineer"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7518875903955422519)  2025-06-22T20:39Z 68.5K followers, 44.8K engagements


"#ad The SaaS Stack If you want to build apps that make money quickly this stack is the way to go. If you havent tried MongoDB Atlas yet check it out at the link in my bio. You can start for free with any cloud provider you want. #ad #coding #programming #mongodb"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7573810470373608759)  2025-11-17T21:33Z 68.5K followers, 56.9K engagements


"SEE YOU NEVER IB #ib #m25 #ibresults #ibdiploma #mathwascrazywork"  
[TikTok Link](https://www.tiktok.com/@giuliacptl/video/7524080702804069655)  2025-07-06T21:15Z X followers, 351.8K engagements


"DAY X of explaining AWS services this time I am covering AWS at a high level before we get a little deeper. If you want to level up your system design and cloud computing understanding to secure a job follow along #computerscience #csmajors #aws #programming #coding #cloudcomputing #systemsdesign"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7390878254221036846)  2024-07-12T22:22Z 68.5K followers, 67.3K engagements


"Why people love Docker Running non-dockerized applications is pain. #coding #programming #docker"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7560387827779898638)  2025-10-12T17:26Z 68.5K followers, 147.1K engagements


"Why Developers Hate Kubernetes IMO the biggest reason is actually people just start using it too early. Its not a silver bullet if you need massive scale have at it but its not free. #devops #docker #kubernetes #coding #programming"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7561573425286843703)  2025-10-15T22:07Z 68.5K followers, 150.5K engagements


"What is Redis and how is it so fast Redis is your best friend for caching and speed. #coding #programming #databases #redis"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7574915762125638967)  2025-11-20T21:02Z 68.5K followers, 57.8K engagements


"5 levels of AWS Users. I completely made this up based on my experience working with AWS & AWS developers. #coding #programming #aws #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7575623750549277965)  2025-11-22T18:49Z 68.5K followers, 67.5K engagements


"Hosting applications locally. This is nice for POCs been messing with this a lot this week so I figured yall would find it useful. #coding #programming #systemdesign #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7576416203913104654)  2025-11-24T22:06Z 68.5K followers, 194.8K engagements


"System Design: Online Chess Simple matchmaking why websockets horizontal scaling. In a real interview you might also be asked about managing state or recovering crashed applications. #coding #programming #systemdesign #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7577852647839927565)  2025-11-28T18:59Z 68.5K followers, 46.1K engagements


"Port Forwarding This is one of the basics of networking that all software engineers & CS majors should at least be aware of. #coding #programming #csmajors #portforwarding"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7578554521064951095)  2025-11-30T16:22Z 68.5K followers, 399.5K engagements


"What is a database Feel free to argue in the comments. IMO a database is a collection of data. No ACID guarantees or anything like that are implied. #coding #systemdesign #programming #databases #softwareengineer"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7580123015258656030)  2025-12-04T21:48Z 68.5K followers, 27.7K engagements


"System Design: Subway Surfers. Real time leaderboards are SUPER COMMON. I recommend diving deeply into this one (articles YouTube videos etc). There is a lot of room here for nuance with queues latency requirements scale requirements etc. #systemdesign #coding #programming"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7580493433282841886)  2025-12-05T21:46Z 68.5K followers, 53.9K engagements


"GraphQL vs REST I myself am a rest enjoyer but I do think GraphQL can be useful in some situations. It gives you a lot of query flexibility on the front end and if used properly it can save you from returning a lot of useless data. Rate limiting caching and maintaining the schema can quickly become an issue if you arent careful. If you wanted to slot it into this AWS design you could use AppSync. #aws #systemdesign #coding #programming #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7509258577035676974)  2025-05-27T22:39Z 68.5K followers, 28.9K engagements


"System Design: Authentication & Accounts Simple example of how to integrate with something like OAuth2 to handle accounts and authentication. Ofc there are many much more managed ways to do this ie Auth0 or Cognito. #csmajors #coding #programming #systemdesign"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7520383421118565645)  2025-06-26T22:08Z 68.5K followers, 84.6K engagements


"System Design: Google Docs This is a pretty common approach that many distributed document editors (notes notion google docs etc) use to handle changes and conflicts. There are different types of CRDTs which can do this this is just an example. #csmajors #coding #programming #systemdesign"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7522915807991581966)  2025-07-03T17:56Z 68.5K followers, 197.6K engagements


"System Design: Figma WebAssembly is not a catch all for performance boosting your web app but it is much faster for numeric operations for things like standard UI ops & event handling we will still use JS. #coding #programming #figma #systemdesign"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7556017603685125431)  2025-09-30T22:47Z 68.5K followers, 49.1K engagements


"Vim in the big XX 🥀 Im not a vim power user but I XXX% use it every day for small changes and so does everyone else (sorry emacs & nano). #coding #programming #vim"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7568172988084866318)  2025-11-02T16:56Z 68.5K followers, 78.6K engagements


"Biggest difference between Junior and Senior engineers. The more ambiguous of a task you can solve the more valuable you are. #coding #programming #csmajors #careers"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7573451501931220238)  2025-11-16T22:20Z 68.5K followers, 41.3K engagements


"Bird Game X is the future of new products. This isnt a novel idea its just a new way of applying old principles in a changing world. #ai #coding #birdgame3 #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7578185777255812407)  2025-11-29T16:31Z 68.5K followers, 78.7K engagements


"Why people love Node People love Node because it makes spinning up a server with JavaScript insanely easy. NPM gives you the biggest library of packages in the world. Nodes non-blocking I/O makes APIs and real-time apps scale effortlessly. #programming #coding #node #csmajor #softwareengineer"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7581171324903623991)  2025-12-07T17:37Z 68.5K followers, 95.6K engagements


"Breaking down a simple Docker file so you can build one yourself. If you havent see the original video from @Free AWS projects NextWork go check it out its super informative. #coding #programming #devops #docker"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7457365117664087339)  2025-01-08T02:25Z 68.2K followers, 4916 engagements


"Ultimate Cloud Development Project for beginners. Before all the over engineered guys come for me just know the purpose of this is to explicitly get experience using and configuring these tools in a very simple environment. Backend CRUD API + frontend S3 website is a very standard cloud tech stack which will take you pretty fair. Learning about monitoring permissions IaC etc are all added bonuses which will always be useful. #csmajors #cloud #coding #programming. #aws #devops"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7518509200423669006)  2025-06-21T20:56Z 68.3K followers, 57.5K engagements


"Software Engineering Interview: Multithreading Multithreading is super powerful when used correctly but it can also introduce a lot of bugs and by no means is a catch all for speeding stuff up. #coding #programming #multithreading #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7528182422224129335)  2025-07-17T22:32Z 68.3K followers, 52K engagements


"How do companies make money on open source projects Astronomer is just one example of a very common business model. Take a popular project host it add a few features and SLAs profit 💰 Other examples are Databricks - spark or Confluent - Kafka to name a few. #coding #programming #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7532894759774440759)  2025-07-30T15:19Z 68.2K followers, 43.2K engagements


"System Design: Fortnite This is a classic client prediction + authoratative server model. This keep lag down for clients (unless) while maintaining integrity on the server side. #coding #programming #systemdesign #softwareengineer"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7546348009366375693)  2025-09-04T21:24Z 68.2K followers, 51.9K engagements


"System Design Interview: Google Maps Navigation microservice. Small sample of what a system design for a navigation service might look like. If you arent familiar with A* check it out really cool algorithm that for some reason they didnt tech me in my algos / dsa class. #csmajors #systemdesign #coding #programming"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7510370302417751338)  2025-05-30T22:32Z 68.5K followers, 121.1K engagements


"Deep Research System Design A simple LLM based deep research system design. #coding #programming #systemdesign"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7553067852132109623)  2025-09-23T00:01Z 68.5K followers, 31.6K engagements


"Context Engineering Context management is now a critical skill for building agentic systems with large language models (LLMs). Anthropic just put out a great report on this which Ive pretty much summarized here. #coding #llms #programming #anthropic"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7556389400532356365)  2025-10-01T22:50Z 68.5K followers, 26.9K engagements


"Designing for AWS Outages You can design around regional cloud provider outages like we saw today but most of the time its not worth it. Examine the costs & dev hours associated then compare that to how much more money you could make building other features. #coding #aws #tech #programming #systemdesign"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7563388274186669326)  2025-10-20T19:29Z 68.5K followers, 165.3K engagements


"Inspired by Cloudflare 11/18 Real talk folks are going to be having this conversation today and for the rest of the week. Good luck soldiers 🫡 #coding #programming #systemdesign #cloudflare"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7574102966592916766)  2025-11-18T16:28Z 68.5K followers, 204.7K engagements


"Servers vs Serverless There are MANY definitions of serverless. I generally define serverless as a model where a cloud provider manages all of the server infrastructure (hardware software scaling). #serverless #cloudcomputing #aws #devops #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7579722941693283598)  2025-12-03T19:57Z 68.5K followers, 44.6K engagements


"Event Driven Architecture Explained. #systemdesign #coding #programming"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7580845846279752974)  2025-12-06T20:34Z 68.5K followers, 62.6K engagements


"Debug a slow API. This is a super common interview question and its one of my favorites because this is something you CERTAINLY will have to do on the job. I best XX% of us have done this exact process. #coding #programming #csmajors #softwareengineer"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7581612544893226270)  2025-12-08T22:09Z 68.5K followers, 53.4K engagements


"Promo Driven Development Building useless stuff just to get promoted. Idk how legit this post is but this XXX% happens all the time in big corporate. They expect NEW stuff rolling out all the time when sometimes maintenance & small changes are whats best for a system. #softwareengineer #coding #programming #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7581939642430131511)  2025-12-09T19:19Z 68.5K followers, 33.1K engagements


"Node.js is a super useful tool especially if you want to build full stack applications in JS. You can pair it up with MongoDB React and Express to have a great setup for full stack web apps. #coding #javascript #node #computerscience #programming"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7398675227456064811)  2024-08-02T22:38Z 68.4K followers, 55K engagements


"Vector Databases Explained Vector databases are super cool and they make operations like similarity search very efficient. Some real world vector databases you can use are Pinecone or PGvector for the postgres Stans out there. #databases #csmajors #coding #programming"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7515167905806437674)  2025-06-12T20:49Z 68.4K followers, 95.2K engagements


"System Design: Stop Web Scrapers These are some steps ranging from basic to pretty robust to prevent scraping on your website. Folks always find a way though just give em a paid API if they really want your data. #csmajors #coding #programming #webscraping"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7522238533659020599)  2025-07-01T22:07Z 68.4K followers, 421.5K engagements


"How Docker Containers actually work Docker depends on namespaces and cgroups (Linux features) to give you the level of isolation you use and love in your containers. #coding #programming #csmajors #systemdesign #docker"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7532648431467105550)  2025-07-29T23:23Z 68.4K followers, 129.9K engagements


"The M in MERN MongoDB is a critical piece of a many full stack web applications. #coding #programming #softwareengineer #computerscience #mongodb"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7399824149776223534)  2024-08-06T00:57Z 68.4K followers, 35.2K engagements


"GraphQL is an up and coming way to build your APIs. If used correctly it can outshine the traditional REST API in some cases. #coding #programming #apis #graphql"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7402417738007825706)  2024-08-13T00:41Z 66.8K followers, 14.4K engagements


"What are distributed systems and why should you learn them AI Blockchain and Cloud Architecture all lean heavily on distributed systems concepts and its only a growing field. In this series I will be covering the most critical concepts to start your journey in distributed systems. You can expect to learn things like eventual consistency scaling fault tolerance network protocols and optimization of common tools. #coding #programming #distributedsystems #cloudcomputing"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7408350409221311787)  2024-08-29T00:23Z 68.2K followers, 6936 engagements


"ETL pipelines are widely used in big tech and surprisingly simple to grasp (but not implement). #coding #programming #etl #csmajors #faang"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7426887538121575726)  2024-10-17T23:16Z 66.4K followers, 4840 engagements


"This is the best tech stack to know if youre trying to land a job as a software engineer in big tech. Spring Boot + React deployed on Docker + AWS. If you build a personal project using this youre going to learn so many skills that are actually relevant on the job. In terms of enterprise level stacks you just cant beat this. This is day X of my tech stack series so follow for more. #coding #programming #csmajors #springboot"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7485097570168081707)  2025-03-23T20:01Z 68.5K followers, 16.5K engagements


"pov: design review for the API The food ordering app ecosystem is really coming together. API GW has a default XX second timeout which can be really limiting for longer jobs. By moving to an asynchronous API like this example we can utilize the full XX minutes of Lambda. You can get results either by polling a status endpoint or waiting for some event to trigger from the lambda before making a call to get the results. #aws #coding #csmajors #systemdesign"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7497398754090241322)  2025-04-25T23:36Z 68.3K followers, 125K engagements


"pov: no idempotency 💀 Idempotency is a critical part of good RESTful APIs. Retries should always be safe. #systemdesign #coding #programming #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7504431721388166446)  2025-05-14T22:28Z 68.5K followers, 152.4K engagements


"pov: slow lambdas costing 💰 Take advantage of the fact that a single warm lambda can run multiple times with the same execution environment. This wont help with cold starts but your average execution time will come down a lot. You wont believe how many new & experienced devs make this mistake. #aws #lambda #coding #programming #systemdesign"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7505570015190502698)  2025-05-18T00:05Z 68.4K followers, 65.4K engagements


"pov: manual ETL This is the zero to industry scale ETL progression. ETL or Extract Transform Load is extremely common in both industry and personal projects and building automated reliable pipelines to do this is a great skill to have in todays job market. Some common use cases are moving unstructured or semi structured data into a warehouse or lake for analytics or dashboarding. #etl #dataengineering #coding #programming #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7512582676717587755)  2025-06-05T21:37Z 68.5K followers, 76.1K engagements


"Mobile App Development Real talk if youre going to build it for one platform do IOS first thats where most of the money is made. React Native lets you write JavaScript and you can build and run for both android and IOS instead of having to write kotlin and swift. #csmajors #coding #programming #appdevelopment"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7514811644833303854)  2025-06-11T21:47Z 68.5K followers, 388K engagements


"JSON Web Tokens (JWTs) JWTs are amazing for handling auth / logins while keeping your applications stateless #coding #programming #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7520730529163906317)  2025-06-27T20:36Z 68.5K followers, 152.3K engagements


"Software Engineering: RESTful APIs. XX% of what I do at work is creating updating and debugging RESTful APIs. These are some of the core principles that I find to be useful to know. #coding #programming #csmajors #softwareengineer"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7521407079748308238)  2025-06-29T16:21Z 68.5K followers, 239.1K engagements


"System Design: ETL Pipeline Companies like AWS and Databricks have made tons of money building on top of Spark. #coding #programming #systemdesign #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7527423426483473677)  2025-07-15T21:28Z 68.4K followers, 27.8K engagements


"System Design: Population Data Warehouse This seemed like a realistic palantir interview question 😅 Let me know what you guys think about this design / how you might do it differently. #coding #programming #systemdesign #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7529266324913098039)  2025-07-20T20:39Z 68.4K followers, 60.2K engagements


"TCP or UDP: Racing Game These are the types of questions you can ask to determine what protocol is best for your use case. As a general rule of thumb if you need extremely low latency and dont mind losing some data use UDP; else TCP. #coding #programming #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7536671681293618487)  2025-08-09T19:35Z 68.5K followers, 42.2K engagements


"Why people love Rust #coding #programming #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7552306522315967799)  2025-09-20T22:47Z 68.5K followers, 81.5K engagements


"API Security Basics Some of the best practices for good API development. This is of course not comprehensive but a few things I always consider. #coding #programming #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7552675215394852110)  2025-09-21T22:37Z 68.5K followers, 576.1K engagements


"Why developers switch to micro services To be clear this is just one of many reasons but I find it to be one of the most compelling. #coding #programming #systemdesign #microservices"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7554157027933605134)  2025-09-25T22:27Z 68.5K followers, 121.6K engagements


"Why people hate Java Script Feeling a little jaded after writing some JS today so here you go. There are TONS of examples of crazy things JS does especially around the == operator but this is my take on the major reasons why it seems like everyone is a hater #coding #programming #csmajors #javascript"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7556763754332032269)  2025-10-02T23:03Z 68.5K followers, 194.9K engagements


"Hashing Small caveats: collisions are possible but should be extremely rare with a strong hash function. When you salt you usually hash the combined password + random string ex hash(password + salt). There are many existing hash functions out there of varying strength. Some common ones are SHA-256 MD5 bcrypt & Argon2. #coding #programming #hashing"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7557873010775035150)  2025-10-05T22:47Z 68.4K followers, 3.7M engagements


"Software Engineering Interview: Webhooks Webhooks are an amazing way to build event driven systems. I use them pretty much every day for automations & large scale decoupled systems. The biggest issue is you have to depend on a 3rd party to send you notifications so its best to combine with polling every once in awhile to make sure you dont miss any. #coding #programming #webhooks #systemdesign"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7558608343720381751)  2025-10-07T22:20Z 68.5K followers, 99.7K engagements


"#ad What do devs actually do all week Build and test APIs. Data is sourced from Postman's 2025 State of the API report which has a bunch of amazing data about APIs and software development beyond what I showcased here. To start creating API documentation with Postman check out the link in my bio. #ad #coding #programming #backenddevelopment #postman"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7560816318652353806)  2025-10-13T21:09Z 68.5K followers, 31.6K engagements


"Where to cache #coding #programming #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7562987747791686925)  2025-10-19T17:35Z 68.5K followers, 38.4K engagements


"DDOS Explained (NOT how to do one) #coding #programming #cybersecurity #systemdesign"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7564526518978809143)  2025-10-23T21:06Z 68.5K followers, 36.4K engagements


"Why devs hate Java. Im more of a Kotlin enjoyer myself though Java has a special place in my heart because it was my first language. I think Java is a great language has good frameworks well supported and certainly one to know if you want to work in big tech. #coding #programming #java #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7564905552288009486)  2025-10-24T21:37Z 68.5K followers, 289.2K engagements


"Async APIs Queues + async APIs are a match made in heaven. Great design pattern for longer running tasks. #coding #programming #csmajors #systemdesign"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7565587772879228215)  2025-10-26T17:45Z 68.5K followers, 79.2K engagements


"#ad AD. X Steps before you code with AI These steps have measurably improved my experience coding with AI Im now getting cleaner and higher quality code and my other files are safe from alteration. You can follow these exact steps before you build your next project in a JetBrains IDE using Junie. #ad #coding #programming #jetbrains #junie"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7566373817568873783)  2025-10-28T20:35Z 68.5K followers, 39.7K engagements


"Why Developers Love PostgreSQL Its pretty much the default pick for any system. Open source good community lots of extensions easy to use. #coding #programming #postgresql"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7566744005170449677)  2025-10-29T20:31Z 68.5K followers, 87.1K engagements


"Domain Name vs URL Tons of people (myself included) get really confused about this. Lmk if this makes sense or makes it more confusing. #coding #dns #programming"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7568628280476077342)  2025-11-03T22:23Z 68.5K followers, 35.1K engagements


"Big Tech Comp Explained This is a standard offer the parts of it and how to handle stock. Its worth mentioning that your stock typically increases over time which helps your comp as you get more years. #bigtech #salarytransparency #career #softwareengineer"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7569001199593131319)  2025-11-04T22:30Z 68.5K followers, 64.5K engagements


"Prevent Duplicate Payments: Idempotency This is a classic question and one I made a video on a while back. Addressing some of the common comments here with a stand alone video. #coding #programming #systemdesign (APIs system design idempotency computer science software engineering what is idempotency)"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7569367457094241591)  2025-11-05T22:12Z 68.5K followers, 832.4K engagements


"Shoutout my boy @allenvert give him a follow. Simplest possible design here you could do a multi agent workflow too but IMO thats overkill unless you really want to go huge with scale. #coding #programming #systemdesign #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7571574311010487566)  2025-11-11T20:55Z 68.5K followers, 74.8K engagements


"System Design: The Notes App Yeah SQLite is pretty goated. #databases #systemdesign #coding #programming"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7575958175422188813)  2025-11-23T16:27Z 68.5K followers, 87.7K engagements


"Load Balancing Website credit to Samwho Lots of great programming visuals on his website. #systemdesign #networking #csmajors #coding"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7576773912399236365)  2025-11-25T21:13Z 68.5K followers, 53.1K engagements


"Always prioritize restoring service. Learned this lesson the hard way but the company always prioritizes availability. #coding #programming #csmajors"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7577452582990318903)  2025-11-27T17:06Z 68.5K followers, 68K engagements


"Web Scraping vs Web Crawling. TLDW: web scraping is for getting specific info from a page web crawling is to discover stuff about a page. #webdevelopment #webscraping #coding #programming"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7579392827210222879)  2025-12-02T22:35Z 68.5K followers, 771.1K engagements


"Software Engineering: Authentication Authentication is one of the most annoying but also critical skills to have as a software engineer. Quick explanation of X different types: basic auth session auth and jwt auth. If you want a video on JWTs and how they work I have another one on my page. #coding #programming #authentication #csmajors #softwareengineer"  
[TikTok Link](https://www.tiktok.com/@arjay_mccandless/video/7582334028225809678)  2025-12-10T20:49Z 68.5K followers, 50.2K engagements