What are the Redis commands?

This article mainly introduces what the Redis command has, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Password login:

1. Redis-cli-h 127.0.0.1-p 6379-a flyvar

String type:

1. Set name ericzhao / / set key value [EX seconds] [PX milliseconds] [NX | XX]

2. Redis 127.0.0.1 SET KEY VALUE 6379 > SET KEY VALUE [EX seconds] [PX milliseconds] [NX | XX] EX seconds − sets the specified expiration time (in seconds). PX milliseconds-sets the specified expiration time in milliseconds. NX-set the key only if the key does not exist. XX-set only if the key already exists.

3. Redis 127.0.0.1 EX 6379 > SET mykey "redis" EX 60 NX / / if the key "mykey" does not exist, set the value of the key with an expiration time of 60 seconds.

4. Get name

5. Keys * / / View all key

6. Getrange name 0 1 / / getrange key start end gets the subcharacters in the string

7. Getset name zhao / / getset key value sets the value of key to value and returns the old value of key. No old value, return nil

8. Mget name age / / mget key [key2...] Get the values of multiple key

9. Mset name zhao age 18 / / set multiple key-value, atomicity

10. Setex name 1 zhao / / setex key seconds value sets the expiration time of key to seconds seconds [isn't setnx atomic?]

11. Psetex name 1 zhao / / psetex key milliseconds value sets the expiration time of key to milliseconds milliseconds

12. Setnx name zhao / / setnx key value sets the value of key to value when key does not exist

13. Msetnx name zhao age 10 / / msetnx key value [key1 value1...] Batch setting when key does not exist

14. Strlen name / / strlen key gets the length of the string value of key

15. Incr age / / incr key sets the numeric value in key + 1

16. Incrby age 7 / / incrby key increment changes the numeric value in key + increment

17. Decr age

18. Decrby age 7

19. Append name wei / / append key value if key exists and is a string, value is best to the end of the value of key, and the length of the string value of key is returned

20. Del age / / del key delete a single key

21. Redis-cli keys "*" | xargs redis-cli del / / Delete multiple key

twenty-two。 Flushdb / / Delete all Key in the current database

23. Flushall / / Delete key from all databases

Hash type:

1. Hset person family-name zhao

2. Hget people family-name

3. Hmset people family-name zhao first-name wei / / hmset key field value [field value...] Each hash can store up to 2 ^ 32-1 key-value pairs.

4. 127.0.0.1 hmset people family-name zhao first-name weiOK127.0.0.1:6379 > hget people family-name "zhao" 127.0.0.1 zhao > hgetall people1) "family-name" 2) "zhao" 3) "first-name" 4) "wei"

5. Hmget people family-name first-name / / hmget key field1 [field2...] Get the values of multiple fields in key

6. Hgetall people / / hgetall key gets all fields and values in key

7. Hdel people family-name / / hdel key field1 [field2...] Delete multiple hash fields

8. Hexists people family-name / / hexists key field to check whether the field field exists in key

9. Hincrby people age 12 / / hincrby key field increment is the integer value of field in key plus incremental increment

10. Hkeys people / / hkeys key gets all the fields in the hash key

11. Hvals people / / hvals key gets all the values in the hash key

12. Hlen people / / hlen key gets the number of fields in the hash key

13. Hsetnx people age 18 / / hsetnx key field value in the hash key, set the field value when field does not exist

List type:

1. Lpush friend qian yun yin / / lpush key value [value...] Add multiple elements to the list header

2. Lpop friend / / an element to the left of the pop-up list

3. Rpush friend qian yun yin

4. Rpop friend

5. Lpushx friend2 qian / / add elements to the existing list. If it does not exist, it will not be added.

6. Rpushx friend2 yun

7. Llen friend / / View the length of the friend list

8. Lindex friend 1 / / get elements from the friend list based on the index

9. Blpop friend10 / / blpop key [key...] Timeout deletes and gets the first element in the list, or blocks until an element is available

10. Brpop friend 10 / / brpop key [key...] Timeout deletes and gets the last element in the list, or blocks until an element is available

11. Linsert friend BEFORE yun yin / / linsert key BEFORE | AFTER pivot value inserts an element before | after an element

12. Lrange friend 0 1 / / lrange key start stop gets the elements of index 0room1 from the list

13. Lset friend 1 yin / / lset key index value sets elements according to the index

14. Ltrim friend 0 1 / / Let the friend list keep only the elements in the interval

Collection type:

1. Sadd address home school campany

2. Scard address / / get the number of members of address

3. Srem address school campany / / Delete school and campany elements in address

4. Smembers address / / returns all elements in address

5. Spop address / / randomly returns an element

6. Srandmember address 2 / / srandmember key [count] randomly returns one or more elements in the collection

7. Smove address location home / / smove source destination member to move specified elements from one collection to another

8. Sismember address shanghai / / sismember key member to determine whether member is a collection of elements in key

9. Sunion address location / / sunion key [key...] Returns the union of all given sets

10. Sunionstore location address address1 / / sunionstore destination key [key...] Returns the union of all given collections and stores them in destination

11. Sinter address location / / sinter key [key...] Returns the intersection of all given sets

12. Sinterstore location address address1 / / sinterstore destination key [key...] Returns the intersection of all given collections and stores them in destination

13. Sdiff address location / / sdiff key [key...] Returns the difference of all given sets

14. Sdiffstore location address address1 / / sdiffstore destination key [key...] Returns the difference of all given sets and stores them in destination

Ordered collection type:

1. Zadd locations 1 home 2 school / / zadd key [NX | XX] [CH] [INCR] score member [score member...] Add home and school to the ordered collection locations. The smaller the score, the higher the rank.-inf and + inf represent negative infinity and positive infinity, respectively.

2. Zcard locations / / gets the number of members of the ordered collection locations.

3. Zcount locations 030 / / zcount key min max, get the number of members in locations in the specified score range. Min and max are both inclusive.

4. Zincrby locations 2 home / / zincrby key increment member, adding increment to the score of the specified member in the ordered set.

5. Zscore locations home / / zscore key member, get the score of home in locations.

6. Zrange locations 0 2 withscores / / zrange key start stop [WITHSCORES]. Get the element in locations by index, and withscores indicates that the element is output with a score.

7. Zrangebyscore locations 1 2 withscores limit 22 / / zrangebyscore key min max [WITHSCORES] [LIMIT offset count], outputs the elements within the specified score range.

8. Zrem locations home school / / zrem key member [member...], delete the element in locations.

9. Zremrangebyscore locations 1 2 / / zremrangebyscore key min max, delete the elements within the specified score range, and return the number of deleted elements.

10. Zrank locations home / / zrank key member, get the ranking of elements (ranking from small to large, starting with 0).

11. Zrevrank locations home / / zrevrank key member, get the ranking of elements in reverse order (the scores are sorted from highest to lowest).

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