Redis

Redis is in-memory data structure store, used as a database, cache and message broker. It stores data in key-value pair. It is used with DB like MySQL, MongoDB to make data access faster.

Commands

To add a key:

SET <key> <value>

To get a value out of a key:

GET <key>

To delete a key:

DEL <key> <value>

To check if the key exists or not:

EXISTS <key>

To get all the keys

GET *

To delete all the keys

flushall

To set the Keys with expiration

SET name pradumna EX 10

or set to existing keys by

ttl <key> <time to live in seconds>

setex <key-name> <time-of-expiration-sec> <value>

or set to existing keys by

ttl <key> <time to live in seconds>

ARRAY

To push the elment at the left side of the array (It will create if it doesn't exists)

lpush <arrayname> <value to push>
lpush name jon

to right:

rpush <arrayname> <value to push>

to get all the value from the array

lrange <keyname> <staring index> <ending indxex>
lrange name 0 -1

To remove 1st item of array

LPOP friends

To remove last item of array

RPOP friends

SETS

To add elemets in the set

SADD <set-key> "value"

To get all the elements from the set

SMEMEBERS <set-key>

TO remove an element from a set

SREM <set-key> <value>
SREM color red

HASHES

To add a key in a set

HSET <hash-key> <propery name> <value>
HSET person name ron

To get a key value pair

HGET <hash-key> <propery name>
HGET person name

To get all the properties of a set

HGETALL <hash-key>
HGETALL person

To delete a property in a set

HGETALL <hash-key> <property name>
HDEL pseron age

To check propert exits of not

HEXISTS <hash-key> <property name>

Commands​

Commands