Basic Commands

• To enter Redis execute redis-cli in cmd
• To add data set key value e.g. set name Teja
• To get data get key e.g. get name
• To Delete data del key e.g. del name
• To check if key exists EXISTS key e.g. exists name
• To get all keys KEYS pattern e.g. KEYS *
• To delete all keys flushall

Cache Expiry

• To check the expiry of the key ttl key
• When you set key the expiry value is set to -1 and it never expires
• To make a key expire expire key seconds to live e.g. expire NAME 100
• If you want to set expiry when creating the key itself setex key secods to live value e.g. setex name 20 test

Data types

Strings

• When you set a value using the SET keyword it is always going to be saved as Strings

List

• If you want to store a list of items you can use lpush key value to create a list and push the values to start
• rpush to insert values at the end lpop, rpop to remove values at start and at the end
• To list all values in a list lrange key start end e.g. lrange fruits 0 -1

Set

• To create and add values to a set sadd key value e.g. sadd subs maths
• To Delete an entry srem key value e.g. srem subs maths
• To list all values in a set smembers key e.g. smembers subs

Map

• hset person name teja to create a map called person and insert a value into a map
• hget person name
• hgetall person
• hdel person name
• hexists person name