Every command name links to a specific wiki page describing the behavior of the command.
Every command name links to a specific wiki page describing the behavior of the command.
| Command | Parameters | Description |
| EXISTS | key | test if a key exists |
| DEL | key | delete a key |
| TYPE | key | return the type of the value stored at key |
| KEYS | pattern | return all the keys matching a given pattern |
| RANDOMKEY | - | return a random key from the key space |
| RENAME | oldname newname | rename the old key in the new one, destroying the newname key if it already exists |
| RENAMENX | oldname newname | rename the oldname key to newname, if the newname key does not already exist |
| DBSIZE | - | return the number of keys in the current db |
| EXPIRE | - | set a time to live in seconds on a key |
| PERSIST | - | remove the expire from a key |
| TTL | - | get the time to live in seconds of a key |
| SELECT | index | Select the DB with the specified index |
| MOVE | key dbindex | Move the key from the currently selected DB to the dbindex DB |
| FLUSHDB | - | Remove all the keys from the currently selected DB |
| FLUSHALL | - | Remove all the keys from all the databases |
| Command | Parameters | Description |
| SET | key value | Set a key to a string value |
| GET | key | Return the string value of the key |
| GETSET | key value | Set a key to a string returning the old value of the key |
| SETNX | key value | Set a key to a string value if the key does not exist |
| SETEX | key time value | Set+Expire combo command |
| SETBIT | key offset value | Set bit at offset to value |
| GETBIT | key offset | Return bit value at offset |
| MSET | key1 value1 key2 value2 ... keyN valueN | Set multiple keys to multiple values in a single atomic operation |
| MSETNX | key1 value1 key2 value2 ... keyN valueN | Set multiple keys to multiple values in a single atomic operation if none of the keys already exist |
| MGET | key1 key2 ... keyN | Multi-get, return the strings values of the keys |
| INCR | key | Increment the integer value of key |
| INCRBY | key integer | Increment the integer value of key by integer |
| DECR | key | Decrement the integer value of key |
| DECRBY | key integer | Decrement the integer value of key by integer |
| APPEND | key value | Append the specified string to the string stored at key |
| SUBSTR | key start end | Return a substring of a larger string |
| Command | Parameters | Description |
| RPUSH | key value | Append an element to the tail of the List value at key |
| LPUSH | key value | Append an element to the head of the List value at key |
| LLEN | key | Return the length of the List value at key |
| LRANGE | key start end | Return a range of elements from the List at key |
| LTRIM | key start end | Trim the list at key to the specified range of elements |
| LINDEX | key index | Return the element at index position from the List at key |
| LSET | key index value | Set a new value as the element at index position of the List at key |
| LREM | key count value | Remove the first-N, last-N, or all the elements matching value from the List at key |
| LPOP | key | Return and remove (atomically) the first element of the List at key |
| RPOP | key | Return and remove (atomically) the last element of the List at key |
| BLPOP | key1 key2 ... keyN timeout | Blocking LPOP |
| BRPOP | key1 key2 ... keyN timeout | Blocking RPOP |
| RPOPLPUSH | srckey dstkey | Return and remove (atomically) the last element of the source List stored at srckey and push the same element to the destination List stored at dstkey |
| BRPOPLPUSH | srckey dstkey | Like RPOPLPUSH but blocking of source key is empty |
| Command | Parameters | Description |
| SADD | key member | Add the specified member to the Set value at key |
| SREM | key member | Remove the specified member from the Set value at key |
| SPOP | key | Remove and return (pop) a random element from the Set value at key |
| SMOVE | srckey dstkey member | Move the specified member from one Set to another atomically |
| SCARD | key | Return the number of elements (the cardinality) of the Set at key |
| SISMEMBER | key member | Test if the specified value is a member of the Set at key |
| SINTER | key1 key2 ... keyN | Return the intersection between the Sets stored at key1, key2, ..., keyN |
| SINTERSTORE | dstkey key1 key2 ... keyN | Compute the intersection between the Sets stored at key1, key2, ..., keyN, and store the resulting Set at dstkey |
| SUNION | key1 key2 ... keyN | Return the union between the Sets stored at key1, key2, ..., keyN |
| SUNIONSTORE | dstkey key1 key2 ... keyN | Compute the union between the Sets stored at key1, key2, ..., keyN, and store the resulting Set at dstkey |
| SDIFF | key1 key2 ... keyN | Return the difference between the Set stored at key1 and all the Sets key2, ..., keyN |
| SDIFFSTORE | dstkey key1 key2 ... keyN | Compute the difference between the Set key1 and all the Sets key2, ..., keyN, and store the resulting Set at dstkey |
| SMEMBERS | key | Return all the members of the Set value at key |
| SRANDMEMBER | key | Return a random member of the Set value at key |
| Command | Parameters | Description |
| ZADD | key score member | Add the specified member to the Sorted Set value at key or update the score if it already exist |
| ZREM | key member | Remove the specified member from the Sorted Set value at key |
| ZINCRBY | key increment member | If the member already exists increment its score by increment, otherwise add the member setting increment as score |
| ZRANK | key member | Return the rank (or index) or member in the sorted set at key, with scores being ordered from low to high |
| ZREVRANK | key member | Return the rank (or index) or member in the sorted set at key, with scores being ordered from high to low |
| ZRANGE | key start end | Return a range of elements from the sorted set at key |
| ZREVRANGE | key start end | Return a range of elements from the sorted set at key, exactly like ZRANGE, but the sorted set is ordered in traversed in reverse order, from the greatest to the smallest score |
| ZRANGEBYSCORE | key min max | Return all the elements with score >= min and score <= max (a range query) from the sorted set |
| ZCOUNT | key min max | Return the number of elements with score >= min and score <= max in the sorted set |
| ZCARD | key | Return the cardinality (number of elements) of the sorted set at key |
| ZSCORE | key element | Return the score associated with the specified element of the sorted set at key |
| ZREMRANGEBYRANK | key min max | Remove all the elements with rank >= min and rank <= max from the sorted set |
| ZREMRANGEBYSCORE | key min max | Remove all the elements with score >= min and score <= max from the sorted set |
| ZUNIONSTORE / ZINTERSTORE | dstkey N key1 ... keyN WEIGHTS w1 ... wN AGGREGATE SUM|MIN|MAX | Perform a union or intersection over a number of sorted sets with optional weight and aggregate |
| Command | Parameters | Description |
| HSET | key field value | Set the hash field to the specified value. Creates the hash if needed. |
| HGET | key field | Retrieve the value of the specified hash field. |
| HMGET | key field1 ... fieldN | Get the hash values associated to the specified fields. |
| HMSET | key field1 value1 ... fieldN valueN | Set the hash fields to their respective values. |
| HINCRBY | key field integer | Increment the integer value of the hash at key on field with integer. |
| HEXISTS | key field | Test for existence of a specified field in a hash |
| HDEL | key field | Remove the specified field from a hash |
| HLEN | key | Return the number of items in a hash. |
| HKEYS | key | Return all the fields in a hash. |
| HVALS | key | Return all the values in a hash. |
| HGETALL | key | Return all the fields and associated values in a hash. |