Redis supports five basic data type commands: string (SET/GET/INCR/DECR/APPEND/STRLEN) hash (HSET/HGET/HDEL/HLEN/HGETALL) list (LPUSH/RPUSH/LPOP /RPOP/LLEN/LRANGE) set (SADD/SMEMBERS/SREM/SCARD/SINTER/SUNION) ordered set (ZADD/ZSCORE/ZRANGE/ZRANK/ZCARD)
Five data type commands of Redis
Redis is an open source in-memory database that supports five basic data types: string, hash, list, set and ordered gather. The following are the commands for these five data types:
String
- SET: Set the value of the string
- GET: Get the character The value of the string
- INCR/DECR: Atomic increase/decrease the value of the string
- APPEND: Append content at the end of the string
- STRLEN: Get the length of the string
Hash
- HSET/HGET: Set/get the key-value pair in the hash
- HDEL: Delete the hash of key-value pairs
- HLEN: Get the number of key-value pairs in the hash
- HGETALL: Get all the key-value pairs in the hash
List
- LPUSH/RPUSH: Push elements at the head/tail of the list
- LPOP/RPOP: Pop elements from the head/tail of the list
- LLEN: Get the number of elements in the list
- LRANGE: Get the elements in the specified range in the list
Collection
- SADD: Add elements to the set
- SMEMBERS: Get all elements in the set
- SREM: Remove elements from the set
- SCARD: Get the number of elements in the set
- SINTER/SUNION: Find the intersection/union of sets
Ordered set
- ZADD: Add elements to in the ordered set, and specify its score
- ZSCORE: Get the score of the element in the ordered set
- ZRANGE: Get the element within the specified score range in the ordered set
- ZRANK : Get the ranking of elements in an ordered set
- ZCARD: Get the number of elements in an ordered set
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