10+ hour, 57+ min ago  (1462+ words) In the previous post, I wrote about RESP " the protocol layer that lets a Redis server understand commands coming over TCP. But parsing a command is only the first step. Once the server receives something like: and the RESP parser…...

23+ hour, 2+ min ago  (1283+ words) Your Redshift cluster is probably idle most of the day and billing you for all of it. Here's the SQL query, the breakeven formula, and two real production cases that show exactly when Serverless wins, when Provisioned wins, and when…...

1+ day, 9+ hour ago  (452+ words) This post keeps Redis as your store but caches typed objects instead of byte arrays, using a small open-source package called Cache Manager. Redis. We'll look at the boilerplate problem, write a clean cache-aside method, prefix keys for shared Redis,…...

1+ day, 14+ hour ago  (723+ words) Redis has a reputation for being a serious piece of infrastructure, and it is. But the core of it, the part that makes it Redis, is astonishingly small. Small enough that you can rebuild it in about 80 lines of Python,…...

1+ day, 18+ hour ago  (498+ words) The original limiter was the one everybody writes first, because it is three lines of Redis and it mostly works: Every request increments a counter named after the current window bucket. When the counter exceeds the limit, requests are rejected…...

1+ day, 18+ hour ago  (1332+ words) Originally published on lavkesh. com I recall one of the first design decisions for our payments platform, which was to deploy an in-memory cache for low-latency access to customer account balances. The architecture diagrams looked clean, with Go services using…...

2+ day, 19+ hour ago  (1106+ words) Most of us use Redis like this: You send a command. Redis stores something. You get the value back. But I wanted to understand what actually happens behind that simplicity. So I built a Redis-compatible server from scratch in Node....

3+ day, 7+ hour ago  (493+ words) When building high-scale, resilient systems on AWS, performance isn't just about writing fast code, it's about avoiding unnecessary work. A Engineer's philosophy often boils down to a simple truth: The fastest code is the code that never executes, and the…...

3+ day, 8+ hour ago  (1358+ words) This deep-dive answers that. We'll look at the RESP protocol both projects speak, the RDB and AOF on-disk formats they read and write, the exact point where their command sets and file formats begin to diverge, and what the performance…...

3+ day, 19+ hour ago  (349+ words) I've watched junior developers block HTTP requests on database migrations, file uploads, and AI inference calls. Then I've watched them ship broken retry logic that duplicates work or loses jobs entirely. This post is what I wish I'd read before…...