Redis

Command	Description	Usage
SET	Sets the value of a key	SET key value
GET	Gets the value of a key	GET key
DEL	Deletes one or more keys	DEL key1 [key2 ...]
KEYS	Lists all keys matching a pattern	KEYS pattern
EXPIRE	Sets an expiration time on a key	EXPIRE key seconds
TTL	Gets the remaining time to live of a key	TTL key
INCR	Increments the value of a key	INCR key
DECR	Decrements the value of a key	DECR key
LPUSH	Prepends one or multiple values to a list	LPUSH key value [value ...]
RPUSH	Appends one or multiple values to a list	RPUSH key value [value ...]
LPOP	Removes and gets the first element in a list	LPOP key
RPOP	Removes and gets the last element in a list	RPOP key
SADD	Adds one or more members to a set	SADD key member [member ...]
SMEMBERS	Gets all members in a set	SMEMBERS key
ZADD	Adds one or more members to a sorted set	ZADD key score member [score member ...]
ZRANGE	Returns a range of members in a sorted set	ZRANGE key start stop [WITHSCORES]
HSET	Sets field in the hash stored at key	HSET key field value [field value ...]
HGET	Gets the value of a field in a hash stored at key	HGET key field
HDEL	Deletes one or more fields from a hash stored at key	HDEL key field [field ...]
HMSET	Sets multiple fields in a hash stored at key (Use HSET for Redis 4.0.0 and above)	HMSET key field1 value1 [field2 value2 ...]

Show DBs

You can use the following command to know the number of databases:

CONFIG GET databases
1) "databases"
2) "16"

You can use the following command to list the databases for which some keys are defined:

INFO keyspace
# Keyspace
db0:keys=10,expires=0
db1:keys=1,expires=0
db3:keys=1,expires=0

Check all databases

info keyspace

Select DB

Launch the CLI by issuing command:

redis-cli

Then use the following command:

select <db number>

For example:

select 4