🔗 "Missing" Keys on Redis Slaves /by @rad_fax

If you use expiring (also known as “volatile”) keys in Redis, you may be in for a surprise when you attach a new Redis slave to your Redis master: the key count on your slave may be up to 25% lower than the key count on your master. This post simply explains why.

🌎 http://www.redisgreen.net/blog/missing-keys-on-redis-slave/