Learn Rails Callbacks in 30 seconds
Learn Rails Callbacks in 30 seconds Callbacks Useful or Dangerous? Rails callbacks automate real work. Used carelessly, one line of code fires four things...
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Technical videos
Walkthroughs and talks on backend architecture, AI automation and the tooling we build with.
SQL vs NoSQL in 30 Seconds
Every software product follows a process. It has a name: the Software Development Life Cycle. THE SIX STAGES Plan → Design → Build → Test → Deploy →...
The Software Development Life Cycle in 30 Seconds
Every software product follows a process. It has a name: the Software Development Life Cycle. THE SIX STAGES Plan → Design → Build → Test → Deploy →...
Stateful vs Stateless Explained in 30 Seconds
Stateful or stateless? The difference is where your session lives. STATEFUL The server keeps your session in its own memory. Log in, and Server A knows who...
The N+1 Query Problem, Explained in 30 Seconds
Your Rails page looks fine. It's quietly running eleven queries. THE SETUP You load 10 posts, then display each post's author: posts = Post.limit(10) ...
Database Indexes in 30 Seconds
Searching thousands of records one by one is slow. An index is how the database stops doing that. THE IDEA An index works like the index in a book. Instead...
Redis in 30 Seconds: Caching and Background Jobs
Is your Rails app slowing down under heavy traffic? Redis is usually the first thing teams reach for — and it solves two different problems. WHAT REDIS...
Nginx Explained in 30 Seconds
What if one server could handle thousands of connections efficiently? That's Nginx. Nginx is a high-performance web server that does two jobs at once: →...
Forward Proxy vs Reverse Proxy in 30 Seconds
Forward Proxy vs Reverse Proxy — Explained in 30 Seconds Forward proxy or reverse proxy? They sound similar, but they solve opposite problems. A FORWARD...
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