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360b734404
https://redis.io/commands/getrange It seems the GETRANGE description is incorrect. Updated for correctness. Perhaps the longer description is better; `# get substring of the value stored in key, determined by the offsets start and end (both are inclusive).`
154 lines
8.4 KiB
Bash
154 lines
8.4 KiB
Bash
# *****************************************************************************
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# BASICS
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# *****************************************************************************
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redis-server /path/redis.conf # start redis with the related configuration file
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redis-cli # opens a redis prompt
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# *****************************************************************************
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# STRINGS
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# *****************************************************************************
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APPEND key value # append a value to a key
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BITCOUNT key [start end] # count set bits in a string
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SET key value # set value in key
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SETNX key value # set if not exist value in key
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SETRANGE key offset value # overwrite part of a string at key starting at the specified offset
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STRLEN key # get the length of the value stored in a key
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MSET key value [key value ...] # set multiple keys to multiple values
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MSETNX key value [key value ...] # set multiple keys to multiple values, only if none of the keys exist
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GET key # get value in key
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GETRANGE key start end # get substring of stored value from start to end offsets (both inclusive)
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MGET key [key ...] # get the values of all the given keys
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INCR key # increment value in key
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INCRBY key increment # increment the integer value of a key by the given amount
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INCRBYFLOAT key increment # increment the float value of a key by the given amount
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DECR key # decrement the integer value of key by one
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DECRBY key decrement # decrement the integer value of a key by the given number
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DEL key # delete key
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EXPIRE key 120 # key will be deleted in 120 seconds
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TTL key # returns the number of seconds until a key is deleted
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# *****************************************************************************
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# LISTS
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# A list is a series of ordered values
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# *****************************************************************************
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RPUSH key value [value ...] # put the new value at the end of the list
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RPUSHX key value # append a value to a list, only if the exists
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LPUSH key value [value ...] # put the new value at the start of the list
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LRANGE key start stop # give a subset of the list
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LINDEX key index # get an element from a list by its index
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LINSERT key BEFORE|AFTER pivot value # insert an element before or after another element in a list
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LLEN key # return the current length of the list
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LPOP key # remove the first element from the list and returns it
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LSET key index value # set the value of an element in a list by its index
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LTRIM key start stop # trim a list to the specified range
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RPOP key # remove the last element from the list and returns it
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RPOPLPUSH source destination # remove the last element in a list, prepend it to another list and return it
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BLPOP key [key ...] timeout # remove and get the first element in a list, or block until one is available
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BRPOP key [key ...] timeout # remove and get the last element in a list, or block until one is available
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# *****************************************************************************
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# SETS
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# A set is similar to a list, except it does not have a specific order
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# and each element may only appear once.
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# *****************************************************************************
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SADD key member [member ...] # add the given value to the set
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SCARD key # get the number of members in a set
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SREM key member [member ...] # remove the given value from the set
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SISMEMBER myset value # test if the given value is in the set.
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SMEMBERS myset # return a list of all the members of this set
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SUNION key [key ...] # combine two or more sets and returns the list of all elements
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SINTER key [key ...] # intersect multiple sets
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SMOVE source destination member # move a member from one set to another
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SPOP key [count] # remove and return one or multiple random members from a set
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# *****************************************************************************
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# SORTED SETS
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# A sorted set is similar to a regular set, but now each value has an associated score.
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# This score is used to sort the elements in the set.
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# *****************************************************************************
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ZADD key [NX|XX] [CH] [INCR] score member [score member ...] # add one or more members to a sorted set, or update its score if it already exists
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ZCARD key # get the number of members in a sorted set
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ZCOUNT key min max # count the members in a sorted set with scores within the given values
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ZINCRBY key increment member # increment the score of a member in a sorted set
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ZRANGE key start stop [WITHSCORES] # returns a subset of the sorted set
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ZRANK key member # determine the index of a member in a sorted set
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ZREM key member [member ...] # remove one or more members from a sorted set
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ZREMRANGEBYRANK key start stop # remove all members in a sorted set within the given indexes
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ZREMRANGEBYSCORE key min max # remove all members in a sorted set, by index, with scores ordered from high to low
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ZSCORE key member # get the score associated with the given mmeber in a sorted set
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ZRANGEBYSCORE key min max [WITHSCORES] [LIMIT offset count] # return a range of members in a sorted set, by score
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# *****************************************************************************
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# HASHES
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# Hashes are maps between string fields and string values,
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# so they are the perfect data type to represent objects.
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# *****************************************************************************
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HGET key field # get the value of a hash field
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HGETALL key # get all the fields and values in a hash
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HSET key field value # set the string value of a hash field
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HSETNX key field value # set the string value of a hash field, only if the field does not exists
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HMSET key field value [field value ...] # set multiple fields at once
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HINCRBY key field increment # increment value in hash by X
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HDEL key field [field ...] # delete one or more hash fields
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HEXISTS key field # determine if a hash field exists
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HKEYS key # get all the fields in a hash
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HLEN key # get all the fields in a hash
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HSTRLEN key field # get the length of the value of a hash field
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HVALS key # get all the values in a hash
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# *****************************************************************************
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# HYPERLOGLOG
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# HyperLogLog uses randomization in order to provide an approximation of the number
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# of unique elements in a set using just a constant, and small, amount of memory
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# *****************************************************************************
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PFADD key element [element ...] # add the specified elements to the specified HyperLogLog
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PFCOUNT key [key ...] # return the approximated cardinality of the set(s) observed by the HyperLogLog at key's)
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PFMERGE destkey sourcekey [sourcekey ...] # merge N HyperLogLogs into a single one
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# *****************************************************************************
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# PUBLICATION & SUBSCRIPTION
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# *****************************************************************************
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PSUBSCRIBE pattern [pattern ...] # listen for messages published to channels matching the given patterns
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PUBSUB subcommand [argument [argument ...]] # inspect the state of the Pub/Sub subsystem
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PUBLISH channel message # post a message to a channel
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PUNSUBSCRIBE [pattern [pattern ...]] # stop listening for messages posted to channels matching the given patterns
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SUBSCRIBE channel [channel ...] # listen for messages published to the given channels
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UNSUBSCRIBE [channel [channel ...]] # stop listening for messages posted to the given channels
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# *****************************************************************************
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# OTHER COMMANDS
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# *****************************************************************************
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KEYS pattern # find all keys matching the given pattern
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