Redis In-Memory Data Store (Changelog Interviews #45)

Wynn caught up with Salvatore Sanfilippo to talk about Redis, the super hot key value store.

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Featuring:

• Salvatore Sanfilippo – Website, GitHub, X
• Wynn Netherland – GitHub, X

Show Notes:

• VMware signs the paychecks for Salvatore and Pieter Noordhuis


• Redis is an open source, advanced key-value store and data structure server wherein keys can contain strings, hashes, lists, sets and sorted sets


• Redis internals consist of ANSI C with an evented model


• Non-blocking replication has always been a Redis design goal


• Replication in Redis is async


• Salvatore’s Redis toolbox includes the Redis Ruby gem and Sinatra


• Chances are you can find a Redis library in your favorite language


• The C client is the only officially supported wrapper


• Salvatore thinks the NoSQL moniker isn’t perfect, focusing too much on performance, but it frames a discussion


• Redis Pub/Sub is perfect for real-time apps


• GitHub’s adoption of Redis in Resque helped fuel the growth of the project


• Redis users tend to use it as a database, as a messaging bus, or as a cache


• Salvatore thinks hosted solutions like Redis-to-Go need to add more value like more frequent backups and seamless upgrades.


• Blizzard uses an 8-node Redis install in serving avatars for WoW


• Justin Campbell asks will VMWare feature Redis in any upcoming projects?


• Ezra Zygmuntowicz and GitHub were among the first “few brave users”


• After a few months Salvatore noticed a dip in adoption , but he trusted his gut and stuck with it

Something missing or broken? PRs welcome!