kongqx · June 20, 2019 04:07
diff --git a/redis_cheatsheet.bash b/redis_cheatsheet.bash
 # Redis Cheatsheet
 # All the commands you need to know


 redis-server /path/redis.conf  # start redis with the related configuration file
 redis-cli                      # opens a redis prompt


 # Strings.


 APPEND key value          # append a value to a key
 BITCOUNT key [start end]  # count set bits in a string
 SET key value             # set value in key
 SETNX key value           # set if not exist value in key
 GET key                   # get value in key
 INCR key                  # increment value in key
 DEL key                   # delete key

 EXPIRE key 120            # key will be deleted in 120 seconds
 TTL key                   # returns the number of seconds until a key is deleted


 # Lists.
 # A list is a series of ordered values.


 RPUSH list value  # puts the new value at the end of the list
 LPUSH list value  # puts the new value at the start of the list
 LRANGE list 0 1   # gives a subset of the list
 LLEN list         # returns the current length of the list
 LPOP list         # removes the first element from the list and returns it
 RPOP list         # removes the last element from the list and returns it


 # Sets.
 # A set is similar to a list, except it does not have a specific order and each element may only appear once. 


 SADD myset value       # adds the given value to the set
 SREM myset value       # removes the given value from the set
 SISMEMBER myset value  # tests if the given value is in the set.
 SMEMBERS myset         # returns a list of all the members of this set
 SUNION myset otherset  # combines two or more sets and returns the list of all elements


 # Sorted Sets
 # A sorted set is similar to a regular set, but now each value has an associated score.
 # This score is used to sort the elements in the set.


 ZADD mysset score value  # adds the given value with the score to the set
 ZRANGE mysset 0 2        # returns a subset of the sorted set

 ZRANGEBYSCORE key min max [WITHSCORES] [LIMIT offset count]  # return a range of members in a sorted set, by score

 # Hashes
 # Hashes are maps between string fields and string values, so they are the perfect data type to represent objects.


 HSET user:1000 name "John Smith"       # sets name to user #1000
 HSET user:1000 email "[email protected]"  # sets email to user #1000
 HGET user:1001 name                    # returns the name for the user #1000
 HGETALL user:1000                      # gets bak the saved data for the hash

 HMSET user:1001 name "John Smith" email "[email protected]"  # sets multiple fields at once

 HINCRBY user:1000 visits 1  # increments value in hash by X
 HDEL user:1000 visits       # deletes value in hash
	# Redis Cheatsheet
	# All the commands you need to know


	redis-server /path/redis.conf # start redis with the related configuration file
	redis-cli # opens a redis prompt


	# Strings.


	APPEND key value # append a value to a key
	BITCOUNT key [start end] # count set bits in a string
	SET key value # set value in key
	SETNX key value # set if not exist value in key
	GET key # get value in key
	INCR key # increment value in key
	DEL key # delete key

	EXPIRE key 120 # key will be deleted in 120 seconds
	TTL key # returns the number of seconds until a key is deleted


	# Lists.
	# A list is a series of ordered values.


	RPUSH list value # puts the new value at the end of the list
	LPUSH list value # puts the new value at the start of the list
	LRANGE list 0 1 # gives a subset of the list
	LLEN list # returns the current length of the list
	LPOP list # removes the first element from the list and returns it
	RPOP list # removes the last element from the list and returns it


	# Sets.
	# A set is similar to a list, except it does not have a specific order and each element may only appear once.


	SADD myset value # adds the given value to the set
	SREM myset value # removes the given value from the set
	SISMEMBER myset value # tests if the given value is in the set.
	SMEMBERS myset # returns a list of all the members of this set
	SUNION myset otherset # combines two or more sets and returns the list of all elements


	# Sorted Sets
	# A sorted set is similar to a regular set, but now each value has an associated score.
	# This score is used to sort the elements in the set.


	ZADD mysset score value # adds the given value with the score to the set
	ZRANGE mysset 0 2 # returns a subset of the sorted set

	ZRANGEBYSCORE key min max [WITHSCORES] [LIMIT offset count] # return a range of members in a sorted set, by score

	# Hashes
	# Hashes are maps between string fields and string values, so they are the perfect data type to represent objects.


	HSET user:1000 name "John Smith" # sets name to user #1000
	HSET user:1000 email "[email protected]" # sets email to user #1000
	HGET user:1001 name # returns the name for the user #1000
	HGETALL user:1000 # gets bak the saved data for the hash

	HMSET user:1001 name "John Smith" email "[email protected]" # sets multiple fields at once

	HINCRBY user:1000 visits 1 # increments value in hash by X
	HDEL user:1000 visits # deletes value in hash