# Redis Notes
###### tags: `Redis` `Database` `NoSQL` `System Design` `Caching` `Linux` `Server` `Distributed System` `Software` `API`

Notes for *"REmote DIctionary Server"* Database.

## Resources

- [Redis Docs - redis.io](https://redis.io/docs/latest/)

## Introduction

- [Can Redis be used as a Primary database? - Hussein Nasser](https://www.youtube.com/watch?v=VLTPqImLapM)
- [Top 5 Redis Use Cases - ByteByteGo](https://www.youtube.com/watch?v=a4yX7RUgTxI)
- [Top Redis Use Cases - ByteByteGo](https://www.youtube.com/watch?v=41YM-75KYL4)
- [Redis單線程如何處理那麼多併發用戶端連接，為什麼單線程，為什麼快](https://www.cnblogs.com/shiblog/p/15854980.html)
- [Redis - the What, Why and How to use Redis as a primary database - TechWorld with Nana](https://dev.to/techworld_with_nana/redis-the-what-why-and-how-to-use-redis-as-a-primary-database-2c55)

## MemCached or Redis

- [Introducing mcrouter: A memcached protocol router for scaling memcached deployments - Engineering at Meta](https://engineering.fb.com/2014/09/15/web/introducing-mcrouter-a-memcached-protocol-router-for-scaling-memcached-deployments/)
- [Memcached vs Redis - More Different Than You Would Expect - Kablamo Engineering Blog](https://engineering.kablamo.com.au/posts/2021/memcached-vs-redis-whats-the-difference/)

Both `Redis` and `memcached` provide *atomic get/set/delete operations*, *automatic expiration of old items*, *sub millisecond latency*, *scale to available RAM*, & are *clusterable*.

But what are the differences?