Neo K.’s Post

Here are some FREE cheat sheets for programmers: - SQL: https://lnkd.in/e4kc9jjQ - Git: https://lnkd.in/eAabC8GG - Bash: devhints.io/bash - HTML: htmlcheatsheet.com - CSS: htmlcheatsheet.com/css - JavaScript: https://lnkd.in/e66QWAtZ - Python: quickref.me/python.html What did I miss? ~ PS - Join 73,001+ people preparing for the system design interview: https://lnkd.in/ed4URjuY ~~~ If you liked this post: ♻ Repost to help others find it 🔔 Follow: Neo Kim 🧑🦰 Tag a person learning system design 💾 Save this post for future reference #coding #programming #softwaredevelopment #systemdesign

Here are some good tech articles to read during the week: 10) How Halo Scaled to 11.6 Million Users Using the Saga Design Pattern: https://lnkd.in/eFXC4-aJ Author: Neo K. 9) The real job security these days is knowing you can get another job: https://lnkd.in/euMqM7Sb Author: Anemari Fiser 8) Prioritize your Tasks Effectively: https://lnkd.in/estNWiWM Author: Hemant Pandey 7) Resiliency beyond the Classic Circuit Breaker: https://lnkd.in/eBPtrMb5 Author: Raul Junco 6) That Extra Focus on Solution is Hurting Your Leadership: https://lnkd.in/eehQTtbH Author: Akash Mukherjee 5) Clean Code - 7 tips to write clean functions: https://lnkd.in/e2VrN5qZ Author: Daniel Moka 4) How and Why Did I Get Certified as an AWS Solutions Architect Associate: https://lnkd.in/eHNm9HV9 Author: Petar Ivanov 3) How Indexing Information Can Make You a Better Engineer: https://lnkd.in/eAXE3FdX Author: Francisco Manuel Soto Ramírez 2) Understanding Data Streams: https://lnkd.in/esuCgKGS Author: Nikki Siapno 1) Service Discovery in Microservices With .NET and Consul: https://lnkd.in/equygbGd Author: Milan Jovanović 0) Also Alexandre Zajac writes a weekly curating the best tech articles: https://lnkd.in/ekkKHyxG ~ PS - Join 73,001+ others preparing for the system design interview: https://lnkd.in/ed4URjuY ~~~ If you liked this post: ♻ Repost to help others find it 🔔 Follow: Neo K. 🧑🦰 Tag a person learning system design 💾 Save this post for future reference #coding #programming #softwaredevelopment #systemdesign

The five levels of system design: Level 1 - SQL database Level 2 - NoSQL database Level 3 - Databaseless Level 4 - Microservices Level 5 - Serverless ~ PS - Join 73,001+ others preparing for the system design interview: https://lnkd.in/ed4URjuY ~~~ If you liked this post: ♻ Repost to help others find it 🔔 Follow: Neo K. 🧑🦰 Tag a person learning system design 💾 Save this post for future reference #coding #programming #softwaredevelopment #systemdesign

A gentle reminder for programmers: - Learn JavaScript before React. - Learn HTML before JavaScript. - Learn Containers before Kubernetes. - Learn REST before GraphQL. - Learn SQL before ORM. - Learn Git before Jenkins. - Learn Linux before Docker. - Learn Data structures before Leetcode. The bottom line: Learn fundamentals before going deep. What else would you add to this list? ~ PS - Join 73,001+ others preparing for the system design interview: https://lnkd.in/ed4URjuY ~~~ If you liked this post: ♻ Repost to help others find it 🔔 Follow: Neo K. 🧑🦰 Tag a person learning system design 💾 Save this post for future reference #coding #programming #softwaredevelopment #systemdesign

How McDonald’s delivery platform scaled to 20,000 orders per second. I spent hours studying about it, so you don't have to. Here's a summary of what I learned: - They combine hexagonal and event-driven architecture for modularity and loose coupling - They represent the domain logic using the hexagonal core - They use a schema registry to maintain contracts for events - They use a standby database to prevent data loss if the message broker is unavailable - They route the events to a dead-letter topic if schema validation fails - They store the menus and restaurant's working hours in an SQL database - They use a queue for guaranteed ordering and exactly-once processing of transactions - They use serverless to add new features without worrying about infrastructure - They use an in-memory cache with Redis to process orders - They do ETL and sentiment analysis on user feedback data - They do smoke testing to check the responsiveness of their API - They use circuit breaker logic and exponential backoff for resilience ~ PS - I wrote an article with visuals of this case study for you: https://lnkd.in/e2JxTCDq ~~~ If you liked this post: ♻ Repost to help others find it 🔔 Follow: Neo K. 🧑🦰 Tag a person learning system design 💾 Save this post for future reference #coding #programming #softwaredevelopment #systemdesign