Where I break down concepts, document control flows, and share practical engineering patterns — not tutorials, but understanding.
Your database has four isolation levels, each with different guarantees about what concurrent transactions can see. Most developers never change the default -- and that default might not be what you think.
Rate limiting isn't just about stopping bad actors. It's about protecting your infrastructure from traffic spikes, runaway clients, and your own frontend making too many calls. Here's how the four main algorithms actually work -- and when to use each one.
Your cache isn't just a faster database. Different caching strategies make fundamentally different trade-offs between consistency, latency, and complexity. Here's how to pick the right one.
When a dependency goes down, the worst thing your service can do is keep calling it. The circuit breaker pattern stops cascading failures before they take down your entire system.
Your database has four isolation levels, each with different guarantees about what concurrent transactions can see. Most developers never change the default -- and that default might not be what you think.
Rate limiting isn't just about stopping bad actors. It's about protecting your infrastructure from traffic spikes, runaway clients, and your own frontend making too many calls. Here's how the four main algorithms actually work -- and when to use each one.
Your cache isn't just a faster database. Different caching strategies make fundamentally different trade-offs between consistency, latency, and complexity. Here's how to pick the right one.
When a dependency goes down, the worst thing your service can do is keep calling it. The circuit breaker pattern stops cascading failures before they take down your entire system.
OFFSET pagination seems simple until you have millions of rows. Here's why it degrades linearly, how cursor-based pagination stays constant-time, and when each approach makes sense.
Your API returns 20 items and fires 21 database queries. Here's exactly how the N+1 problem happens, why ORMs make it worse, and the three patterns that fix it for good.
A clear breakdown of when to use REST, GraphQL, or gRPC. Not opinions — control flow, trade-offs, and decision logic that actually helps you pick the right one for your system.
Most developers know indexes make queries fast. Few understand why. This post breaks down B-Tree indexing, query planning, and the exact mechanics that turn a 2-second query into a 2ms one.