REDIS-CLI Command Summary

REDIS-CLI Command Summary

Redis provides a rich command to manipulate databases and various data types, which can be used on Linux endpoints. In programming, such as using Redis's Java language Pack, these commands have a corresponding method. The following is a summary of the commands provided by Redis.

1. Commands related to connection operation

Quit: Close connection (connection)

Auth: simple Password Authentication

2. Commands for value operations

Exists (key): Verify that a key exists

Del (key): Delete a key

Type (key): Return value types

Keys (pattern): Returns all keys that satisfy the given pattern

Randomkey: Randomly returns a key in key space

Rename (Oldname, newname): Rename the key from Oldname to newname, or delete the newname-represented key if newname exists

Dbsize: Returns the number of keys in the current database

Expire: Set the active time of a key (s)

TTL: Get the active time of a key

Select (Index): Query by index

Move (Key, Dbindex): Transfers the key from the current database to the database with the Dbindex index

FLUSHDB: Delete all keys in the currently selected database

Flushall: Delete all keys in all databases

3. Commands for string manipulation

Set (key, value): Assigns a value to a string named key in the database

Get (Key): Returns the value of a string named key in the database

Getset (key, value): Assigns the last value to a string named key

Mget (Key1, Key2,..., key N): Returns multiple strings in the library (their names are key1,key2 ... ) of value

SETNX (key, value): If a string with the name key does not exist, add a string to the library with the name key, value

Setex (Key, Time, value): Adds a string to the library (with the name key, which is value) and sets the expiration time

Mset (Key1, value1, Key2, value2,... key N, value N): Assigning multiple strings at the same time, string assignment value I with Name Key I

Msetnx (Key1, value1, Key2, value2,... key N, value N): If all strings with the name key I do not exist, a string is added to the library, the name key I is assigned value I

INCR (Key): 1 operation with a string named key

Incrby (Key, Integer): String with Name Key added integer

DECR (key): string minus 1 operation with name key

Decrby (Key, Integer): string with the name key reduced by integer

Append (key, value): String value with the name key appended value

SUBSTR (key, start, end): Returns a substring of the value of string with the name key

4. Commands for list operations

Rpush (key, value): Adds an element of value to the list at the end of the name key

Lpush (key, value): Adds an element of value to the list header with the name key

Llen (Key): Returns the length of the list named key

Lrange (key, start, end): Returns the element between start and end in list named key (subscript starting from 0, same as below)

LTrim (key, start, end): Intercepts the list named key, preserving the element between start and end

Lindex (key, index): Returns the element of the index position in the list named key

LSet (key, index, value): Assigns the element of the index position in the list named key to value

Lrem (Key, Count, value): Removes the count of the elements in the list with the name key as value. Count is 0, removing all elements that have values of value, Count>0 removes the element with count values from start to end, Count<0 removes |count| values as value from the tail. Lpop (Key): Returns and removes the first element in the list named key Rpop (key): Returns and removes the tail element in list named key Blpop (Key1, Key2,... key N, timeout): The block version of the Lpop command. That is, when timeout is 0 o'clock, if a list with the name key I does not exist or the list is empty, the command ends. If timeout>0, if this is the case, wait for timeout seconds, and if the problem is not resolved, perform a pop operation on the list starting with keyi+1.

Brpop (Key1, Key2,... key N, timeout): The block version of Rpop. Refer to the previous command.

Rpoplpush (Srckey, Dstkey): Returns and removes the tail element of the list named Srckey, and adds the element to the head of the list named Dstkey

5. Commands for SET operations

Sadd (Key, member): Adds an element to a set named Key member

Srem (Key, member): Removes the element in the set named Key member

Spop (key): Randomly returns and deletes an element in a set with the name key

Smove (Srckey, Dstkey, member): Moves the member element from a collection named Srckey to a collection named Dstkey

SCard (Key): Returns the cardinality of a set named key

Sismember (Key, member): Test whether the member is a set element with the name key

Sinter (Key1, Key2,... key N): Intersection

Sinterstore (Dstkey, Key1, Key2,... key N): Sets the intersection and saves the intersection to Dstkey

Sunion (Key1, Key2,... key N): Seek and set

Sunionstore (Dstkey, Key1, Key2,... key N): Set and save the set to Dstkey

Sdiff (Key1, Key2,... key N): Differential set

Sdiffstore (Dstkey, Key1, Key2,... key N): Differential set and save the difference set to Dstkey collection

Smembers (Key): Returns all elements of a set with the name key

Srandmember (key): Randomly returns an element of a set with the name key

6. Commands for Zset (sorted set) operation

Zadd (key, Score, member): Adds an element member,score for sorting to a zset named key. If the element already exists, the order of the element is updated according to score.

Zrem (Key, member): Removes the element in Zset with the name Key member

Zincrby (key, Increment, member): If the element member already exists in the Zset with the name key, the score of the element is incremented increment; otherwise, the element is added to the collection and its score value is increment

Zrank (Key, member): Returns the rank (that is, index, starting from 0) of the member element in the Zset with the name key (the element has been sorted score from small to large), and returns "nil" if there are no member elements

Zrevrank (Key, member): Returns the rank (that is, index, starting from 0) of the member element in the Zset with the name key (the element has been sorted by score from large to small), and returns "nil" if there is no member element

Zrange (key, start, end): Returns all elements of index from start to end in Zset with the name key (the element has been sorted by score from small to large)

Zrevrange (key, start, end): Returns all elements of index from start to end in Zset with the name key (the element has been sorted by score from large to small)

Zrangebyscore (Key, Min, max): Returns zset score >= min in the name key and all elements score <= Max Zcard (key): Returns the cardinality of Zset with the name Key Zscore (key , Element): Returns the score Zremrangebyrank (key, Min, max) of elements in Zset with the name key: Delete the Zset in the name key, rank >= min, and rank <= All elements of Max Zremrangebyscore (key, Min, max): Remove all elements of score >= min and score <= Max in Zset named key

Zunionstore/zinterstore (Dstkeyn, Key1,..., KeyN, WEIGHTS W1,... WN, AGGREGATE sum| min| MAX): Sets and intersections of N Zset, and saves the last collection in Dstkeyn. For the score of each element in a collection, multiply the weight parameter for the aggregate operation before doing it. If weight is not provided, the default is 1. The default aggregate is sum, that is, the score of the elements in the result set is the value of the sum operation for all the corresponding elements of the collection, while Min and Max means that the score of the elements in the result set are the minimum and maximum values in the corresponding elements of all the collections.

7, the command of the hash operation

Hset (Key, field, value): Adds an element to a hash named key Field<->value

Hget (Key, field): Returns the value of field corresponding to the hash named key

Hmget (Key, field1, ..., field N): Returns the value corresponding to field I in the hash named key

Hmset (Key, field1, value1,..., field N, Value N): Adds an element to a hash named key field I<->value I

Hincrby (Key, field, integer): Adds an integer to the value of field in the hash named key

Hexists (Key, field): A field with the key field in the hash named key

Hdel (Key, field): Delete The field with the key field in the hash named key

Hlen (Key): Returns the number of elements in a hash with the name key

Hkeys (Key): Returns all keys in a hash with the name key

Hvals (Key): Returns the value corresponding to all keys in a hash with the name key

Hgetall (Key): Returns all keys (field) and their corresponding value in a hash with the name key

8. Persistence

Save: Synchronize data to disk

Bgsave: Asynchronously saving data to disk

Lastsave: Returns the UNIX timestamp when the data was last successfully saved to disk

Shundown: Save data synchronously to disk, and then close the service

9. Remote Service Control

Info: Provide information and statistics about the server

Monitor: Live dump of received requests

slaveof: Changing Replication policy settings

Config: Configure the Redis server at run time

REDIS-CLI Command Summary