#DevtoRedis

Valkey vs Redis, tested on Redis 8.10.3 and Valkey 9.1.3. Same speed on my bench, different licences and features, and a migration path that breaks on streams. Here is what I ran, what failed, and which one to pick.

A Redis cache-aside layer cut our product endpoint's p99 from 180ms to 9ms, then shipped two classic bugs: a cache stampede and stale data. Here's the fix in Go with go-redis and singleflight.

rConfig fingerprint counts and a control-plane review that includes RBAC and Redis.

We often use Redis to coordinate work across multiple application instances. A common solution is a...

Why an exposed rConfig Redis queue is a code-execution boundary and how to contain it.

Most Telegram bots that charge money end up with two kinds of users: free users who get a taste, and...

Laravel Docker Lessons · Lesson 11 Set up Redis for Laravel queues and cache with Docker, PHPRedis,...

One morning, our daily automated code review flagged a refactor we had just pushed. The finding fit...

Why per-worker rate limiters overshoot LLM tokens-per-minute limits, and how to share one RPM + TPM budget across every process with a single Redis Lua script.

System design as engineering, on a news feed: API, data model, fan-out on read vs write with cost formulas, Redis timelines, cursors, hot keys and a benchmark.

I measured Redis 8.12-rc1's new roaring bitmap type: a 200-million-bit sparse bitmap dropped from 24MB to 239KB and BITCOUNT got about 14 times faster, but a dense bitmap came out slightly bigger than before.

Short answer: Use Redis when you need application-controlled retry timing and can own recovery; use...

A while ago I started getting this error in production: "payload too large". The culprit was a Redis...

A waiting room (or "virtual queue") is what you see when a ticket sale opens: "You are number 1,342...

Fix Redis in Docker: Connection refused from another container, DENIED protected mode, NOAUTH Authentication required, ignored REDIS_PASSWORD and MISCONF.

Read this tutorial on Signadot docs. Sandboxes route a request to the right version of a service by...

Blind retries double-send emails and double-charge customers. The BullMQ setup I run in NestJS: jittered backoff, idempotent jobs, and a dead-letter queue.

This Redis latency benchmark measures how long HotKV, Redis, Valkey and Dragonfly take to answer at a...

Project: ShopEase — E-Commerce Web Application What happens when you try to manage orders, payments,...

Redis is an in-memory data store — a tool that keeps data in memory instead of on disk, so reading it...