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Show used Redis databases and key counts

harmlessRedis and Memcacheddebian, ubuntu
user@server
redis-cli INFO keyspace

Prints one line per used database, such as db0:keys=15234,expires=1200,avg_ttl=0. This shows at a glance which database numbers are used by different websites or applications. Empty databases are not listed.

Note: If several WordPress installations share one Redis server, each should have its own database number or its own prefix.

Also searched as

  • which redis databases are in use
  • redis keys per database
  • redis db0 db1 overview

Related one-liners

All in Redis and Memcached

Count Redis keys by pattern without blocking the server

$redis-cli -n 0 --scan --pattern '*transient*' | wc -l
harmlessRedis and Memcached

Count the keys in a Redis database

$redis-cli -n 0 DBSIZE
harmlessRedis and Memcached

Find the biggest keys in Redis

$redis-cli -n 0 --bigkeys
harmlessRedis and Memcached

Check whether Redis is reachable

$redis-cli -h 127.0.0.1 -p 6379 ping
harmlessRedis and Memcached

Connect to Redis over a Unix socket

$redis-cli -s /run/redis/redis-server.sock ping
harmlessRedis and Memcached

Flush a single Redis database (FLUSHDB)

$redis-cli -n 0 FLUSHDB
destructiveRedis and Memcached

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