1+ hour, 16+ min ago   (577+ words) Sometimes the fastest operation is the one we don’t have to perform again. As applications grow, the same data is often requested repeatedly. Imagine a product endpoint: If thousands of users request the same product information, we may execute almost…...

1+ day, 27+ min ago   (296+ words) If your database is the library where you store all your books, Redis is the desk right in front of you where you keep the one book you are reading right now. Redis (Remote Dictionary Server) is an in-memory data…...

2+ day, 3+ hour ago   (319+ words) This is genuinely advanced material — understanding it requires comfort with distributed systems failure modes, not just Redis commands. A basic lock looks simple: This sets the key only if it doesn't exist (NX), with a 30-second expiry (PX) so a…...

2+ day, 6+ hour ago   (444+ words) This article was originally published on Jo4 Blog. Here's the full pattern: how the SSE endpoint is shaped, how Redis pub/sub fans events across pods, and the subtle ordering and lifecycle gotchas we hit along the way. A /notifications/stream…...

2+ day, 6+ hour ago   (1636+ words) When you're building an API, controlling traffic is essential. Without proper traffic controls, a sudden spike in requests can overwhelm your application, increase infrastructure costs, slow down legitimate users, or even cause an outage. Two terms you'll often hear in…...

2+ day, 14+ hour ago   (739+ words) TL;DR: After reviewing hundreds of Laravel codebases, the same 10 authorization mistakes show up again and again. This article walks through each anti-pattern with real before/after code — and shows how a single package, Laravel Permission Manager, fixes all ten…...

2+ day, 16+ hour ago   (641+ words) Hit a perfect 7-day streak this week, shipping 177 commits across systems architecture and personal tooling. Between hardening Redis brokers and fixing terminal hijacking in tmux, I managed to push nearly 7k lines of code across eight different projects. My Python-based opportunity-radar…...

2+ day, 20+ hour ago   (294+ words) If you’ve ever built an Express API, you’ve probably reached for standard rate-limiting middleware to protect your login or payment endpoints from DDoS and brute-force attacks. Under the hood, most simple limiters use a Fixed-Window Counter. It’s easy to write:…...

2+ day, 21+ hour ago   (696+ words) Rate limiting can start with a Map and a counter. That is enough for a single process. The design changes when two workers need to enforce the same limit. Imagine a limit of 100 requests per minute for one user. Worker…...

2+ day, 22+ hour ago   (138+ words) There are already good Redis tools for NestJS. Most of them mainly help you connect NestJS to Redis and use the Redis client. That's useful, but as a project grows, you often need to build more things around Redis yourself:…...