#redis #eviction #policies #wontstart #cache

redis_cache_evict_old_data.md

Incident and details

Redis wont startup, after some investigation we found some misconfiguration of the eviction policies.

old setting volatile-lru will only works if TTL is set from the client side

In our case client is the docker registry, therefore a better eviction policy is required for our redis

allkeys-lru would be a better candidate in this case.

Reference

http://redis.io/topics/lru-cache

http://stackoverflow.com/questions/25618045/can-i-set-global-ttl-in-redis