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Count the keys in a Redis database

harmlessRedis and Memcacheddebian, ubuntu
Adjust the values, the command updates live
user@server
redis-cli -n 0 DBSIZE

Returns the number of keys in the database selected with -n as a single number. DBSIZE only reads an internal counter, so it finishes instantly even with millions of keys. Handy for comparing before and after a cache flush or a plugin change.

Also searched as

  • how many keys in redis
  • redis database size
  • number of entries in object cache

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

Find the biggest keys in Redis

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

Show used Redis databases and key counts

$redis-cli INFO keyspace
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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