[redis] install redis in Ubuntu and the basic usage and configuration of redis

 

Link to the original text ：https://www.cnblogs.com/donghaonan/p/10403781.html

For the convenience of learning to view , Temporary record , Invasion and deletion

 

1. install redis Use command sudo apt-get install redis-server
　　whereis redis see redis Installation position of
　　ps -aux | grep redis see redis The process of the service runs
　　netstat -nlt | grep 6379 according to redis View the running port number redis Server status , Port number preceded by redis Service Monitor IP( By default, it's local IP 127.0.0.1)
2. start-up redis
　　 Local boot redis-cli
　　 Remote connection ( Need to install locally redis client ) redis-cli -h host( long-range ip) -p port( Port number ) -a password( password )
3.redis Configuration of
　　config get * see redis All configuration parameters of
　　config get (name) see redis A configuration parameter
　　config set (name) (value) modify redis Some of the configurations ( Some configuration modifications do not support this operation , For example, modify bind)
　　 Operations that do not support client modification need to be modified redis Configuration file for sudo vi /etc/redis/redis.conf
　　　　 for example ： Modify the configuration file redis.conf Configure remote access
　　　　　　   (1) Look in the configuration file for bind 127.0.0.1 Annotate Change it to #bind 127.0.0.1
　　　　    　   (2) Restart redis that will do
4.redis Use
　　 Basic use ：
　　　　del key Used to delete existing key
　　　　keys pattern View all that match the pattern key
　　　　　　 for example keys * View all key
　　　　exists key see key Whether there is
　　　　type key see key Storage type of
　　　　rename key newkey modify key The name of
　　redis It mainly includes 5 Data type string in (String)、 Hash (Hash)、 list (list)、 aggregate (Set)、 Ordered set (Sorted set)
　　(1) character string (String) Type main operation
　　　　set key value For a given key Set the value
　　　　get key Get specified key Value
　　　　getrange key start end Get specified key Value substring start <= String <= end
　　　　mget key1 key2 ... Get all the given key value
　　　　strlen key return key The length of the stored string value
　　　　append key value If key Already exists and is a string ,append Specifies the value Append to the key It was worth the end , Otherwise, add a new key The value is value
　　(2) Hash (Hash) The main operation of type
　　　　hmset key field1 value1 field2 value2 ... Will be multiple field-value( Domain - value ) Set to hash table key in
　　　　hmget key field1 field2 ... Get the value of all the given fields
　　　　hdel key field1 field2 ... Delete one or more fields
　　　　hexists key field Look at the hash table key in , Specifies whether the field exists
　　　　hget key field Get the information stored in the hash table key The value of the specified field in
　　　　hset key field value take key The field value in is set to value
　　　　hgetall key Get hash table key All fields and values in
　　　　hkeys key Get all hash tables key Middle field
　　　　hvals key Get all values in hash table
　　　　hlen key Get hash table key The number of fields in

　　(3) List the type (list) The main operation of
　　　　lpush key value1 value2 ... Insert one or more values into the list header
　　　　rpush key value1 value2 ... Insert one or more values at the end of the list
　　　　lpop key Remove and get the first element of the list
　　　　rpop key Remove and get the last element of the list
　　　　lindex key index Get the elements in the list by index
　　　　linsert key before | after pivot value In the list element pivot Insert elements before or after value
　　　　llen key Get list length
　　　　lrange key start end Get the elements in the specified range of the list
　　　　lrem key count value Remove list elements
　　　　　　 remarks ：
　　　　　　　　count > 0 : Search from header to footer , Remove and VALUE Equal elements , The number of COUNT .
　　　　　　　　count < 0 : Search from the end of the table to the header , Remove and VALUE Equal elements , The number of COUNT The absolute value of .
　　　　　　　　count = 0 : Remove all and from the table VALUE Equal value .
　　　　lset key index value Set the value of the list element through the index
　　　　ltrim key start end Let the list keep the interval start end Elements in scope , Delete other elements

　　(4) Collection types (set) The main operation of
　　　　sadd key member1 member2 ... Add one or more members to the collection
　　　　scard key Get the number of members of the collection
　　　　sdiff key1 key2 Get the difference set of the set return key1 There is , key2 Not found in , It is related to the sequence
　　　　sinter key1 key2 obtain key1 and key2 Intersection
　　　　sismember key member Judge member Whether it is key Member of the
　　　　smembers key return key All the members of the
　　　　spop key Remove and return key A random element in
　　　　srandmember key [count] return key One or more random numbers in count Value setting returns a random number
　　　　srem key member1 member2 ... Remove one or more members of the collection
　　　　sscan key cursor match [pattern] [COUNT count] Iterate over the elements in the collection
　　　　　　 remarks ：
　　　　　　　　cursor Where the scan starts 0 1 etc.
　　　　　　　　match pattern Regular matching is used for filtering
　　　　　　　　cout Number of scans

　　(5) Ordered set (sorted set) The main operation of type
　　　　zadd key score1 member1 score2 member2 ... Add one or more members to an ordered collection , Or update scores of existing members
　　　　zcard key Get the number of members of the ordered set
　　　　zcount key min max Calculates the number of members of a specified interval fraction in an ordered set
　　　　zrange key start end Return the members in the specified interval of the ordered set through the index interval
　　　　zrank key member Returns the index of a specified member in an ordered collection
　　　　zrem key member1 member2 ... Remove one or more members from an ordered set
　　　　zrevrange key start end Returns the members of a specified interval in an ordered set , Through the index , Score from high to the end
　　　　zrevrank key member Returns the rank of a specified member in an ordered set , Ordered sets are arranged in order of the fraction
　　　　zscore key member Returns the member score value in an ordered set
　　　　zscan key cursor [match pattern] [count] Iterate over elements in an ordered set （ Include element members and element scores ）