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redis api in bash
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# simple string | |
SET name "fido" | |
GET name // "fido" | |
# increment | |
SET connections 10 | |
INCR connections // 11 | |
DEL connections // deleted | |
INCR connections // 1 | |
# list (like array) | |
# RPUSH puts the new value at the end of the list | |
RPUSH friends "Alice" | |
RPUSH friends "Bob" | |
# LPUSH puts the new value at the start of the list. | |
LPUSH friends "Sam" | |
# LRANGE gives a subset of the list. It takes the index of the first element you want to retrieve as its first parameter and the index of the last element you want to retrieve as its second parameter. A value of -1 for the second parameter means to retrieve elements until the end of the list. | |
LRANGE friends 0 -1 => 1) "Sam", 2) "Alice", 3) "Bob" | |
LRANGE friends 0 1 => 1) "Sam", 2) "Alice" | |
LRANGE friends 1 2 => 1) "Alice", 2) "Bob" | |
# LLEN returns the current length of the list. | |
LLEN friends => 3 | |
# LPOP removes the first element from the list and returns it. | |
LPOP friends => "Sam" | |
# RPOP removes the last element from the list and returns it. | |
RPOP friends => "Bob" | |
# set - a set is similar to a list, except it does not have a specific order and each element may only appear once. | |
# add | |
SADD superpowers "flight" | |
SADD superpowers "x-ray vision" | |
SADD superpowers "reflexes" | |
# remove | |
SREM superpowers "reflexes" | |
# check existance (1 if true and 0 if false) | |
SISMEMBER superpowers "flight" // 1 | |
SISMEMBER superpowers "reflexes" // 0 | |
# list all items | |
SMEMBERS superpowers // | |
# hashes (like object) | |
HSET user:1000 name "John" | |
HSET user:1000 email "John@foo.com" | |
HGETALL user:1000 | |
HGET user:1001 name | |
HSET user:1000 visits 10 | |
HINCRBY user:1000 visits 1 // 11 | |
HINCRBY user:1000 visits 10 // 21 | |
HDEL user:1000 visits | |
HINCRBY user:1000 visits 1 // 1 |
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