Redis is an open-source, in-memory data structure store used as a database, cache, and message broker. It supports various data structures such as strings, hashes, lists, sets, and more. This cheat sheet provides a quick reference for common Redis commands and operations.
| Command | Description | Example |
|---|---|---|
SET key value |
Set the value of a key | SET mykey "Hello" |
GET key |
Get the value of a key | GET mykey |
DEL key |
Delete a key | DEL mykey |
INCR key |
Increment the value of a key | INCR counter |
DECR key |
Decrement the value of a key | DECR counter |
HSET key field value |
Set the value of a hash field | HSET user:id name "John" |
HGET key field |
Get the value of a hash field | HGET user:id name |
LPUSH key value |
Push a value to the beginning of a list | LPUSH mylist "World" |
RPUSH key value |
Push a value to the end of a list | RPUSH mylist "Hello" |
LPOP key |
Pop a value from the beginning of a list | LPOP mylist |
RPOP key |
Pop a value from the end of a list | RPOP mylist |
SADD key member |
Add a member to a set | SADD myset "value" |
SMEMBERS key |
Get all members of a set | SMEMBERS myset |
ZADD key score member |
Add a member with a score to a sorted set | ZADD myzset 1 "one" |
ZRANGE key start stop |
Get a range of members from a sorted set | ZRANGE myzset 0 -1 |
EXPIRE key seconds |
Set a key’s time to live in seconds | EXPIRE mykey 60 |
PERSIST key |
Remove the expiration of a key | PERSIST mykey |
MSET key1 value1 key2 value2 ... |
Set multiple key-value pairs in one command | MSET key1 "value1" key2 "value2" |
GETSET key value |
Set the value of a key and return its old value | GETSET mykey "newvalue" |
SCAN cursor [MATCH pattern] [COUNT count] |
Incrementally iterate over a set of keys | SCAN 0 MATCH prefix:* COUNT 10 |
INFO |
Get information and statistics about the server | INFO |
FLUSHDB |
Remove all keys from the current database | FLUSHDB |
BGSAVE |
Asynchronously save the dataset to disk | BGSAVE |
BGREWRITEAOF |
Asynchronously rewrite the append-only file | BGREWRITEAOF |
CONFIG GET parameter |
Get the value of a configuration parameter | CONFIG GET dir |
CONFIG SET parameter value |
Set the value of a configuration parameter | CONFIG SET dir /var/redis |
MONITOR |
Listen for all requests received by the server | MONITOR |
| ——————————————– | ————————————————— | ——————————————- |
ZSCORE key member |
Get the score associated with a member in a sorted set | ZSCORE myzset "one" |
ZRANK key member |
Get the rank of a member in a sorted set | ZRANK myzset "one" |
ZREM key member [member ...] |
Remove one or more members from a sorted set | ZREM myzset "one" |
HGETALL key |
Get all fields and values from a hash | HGETALL user:id |
HMSET key field1 value1 [field2 value2 ...] |
Set multiple hash fields and values | HMSET user:id name "John" age 30 |
HDEL key field1 [field2 ...] |
Delete one or more fields from a hash | HDEL user:id age |
SREM key member [member ...] |
Remove one or more members from a set | SREM myset "value" |
ZCOUNT key min max |
Count the members in a sorted set within a score range | ZCOUNT myzset 0 100 |
ZREVRANGE key start stop [WITHSCORES] |
Get a range of members from a sorted set in reverse order | ZREVRANGE myzset 0 -1 WITHSCORES |
LLEN key |
Get the length of a list | LLEN mylist |
LINDEX key index |
Get an element from a list by its index | LINDEX mylist 2 |
| `LINSERT key BEFORE | AFTER pivot value` | Insert a value before or after a specific value in a list |
ZRANGEBYSCORE key min max [WITHSCORES] [LIMIT offset count] |
Get members from a sorted set within a score range | ZRANGEBYSCORE myzset 0 10 WITHSCORES LIMIT 0 5 |
CONFIG REWRITE |
Rewrite the configuration file with the in-memory configuration | CONFIG REWRITE |
CLIENT LIST |
Get the list of client connections to the server | CLIENT LIST |
SCRIPT LOAD script |
Load a Lua script into the script cache | SCRIPT LOAD "return redis.call('PING')" |
This cheat sheet covers some of the fundamental Redis commands. For more detailed information, refer to the official Redis documentation.