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Find the biggest keys in Redis

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

Scans all keys in the database and reports the biggest key for each data type, followed by a summary with count and average size. With WordPress, huge alloptions entries or plugin transients often stand out here. Since SCAN is used internally, the run does not block the server.

Note: For strings the length is given in bytes, for lists, hashes and sets the number of elements.

Also searched as

  • what is using memory in redis
  • large entries in redis cache
  • redis bigkeys

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

Show Redis memory usage and limit

$redis-cli INFO memory | grep -E '^(used_memory_human|used_memory_peak_human|maxmemory_human|maxmemory_policy|mem_fragmentation_ratio):'
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

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