& by Antonio De Patto ... a redis fan 

Which one 

Salvatore Sanfilippo aka antirez 

ALL data-set in RAM 

PERSIST 1) Periodic snapshot 2) In Append 3) Delegate to slave 

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Very fast about 100.000 queries/second 

5 different data structures ● STRING ● HASH ● LIST ● SETS ● SORTED SETS 

STRING Simple string or integer values 

STRING Simple string or integer values GET Fetch the data stored at the given key SET Set the value stored at the given key DELETE Delete the value stored at the given key (works for all types) ex. SET users:anto "{'name': 'antonio', 'email':'[email protected]'}" 

HASH Unordered mapping of keys to values of strings or integer values 

HASH Unordered mapping of keys to values of strings or integer values HSET Stores the value at the key in the hash HGET Fetches the value at the given hash key HGETALL Fetches the entire hash HDEL Removes a key from the hash, if it exists ex. HSET users:1032 email [email protected] HSET users:searching [email protected] 1032 

LIST Ordered sequence of strings 

LIST Ordered sequence of strings RPUSH Push the value onto the right end of the list LRANGE Fetch a range of values from the list LINDEX Fetch an item at a given position in the list LPOP Pop the value from the left end of the list and return it ex. RPUSH zend:queue:log {'userId':12332,'UA':Opera/9.0 (Window....; en)'} 

SET Unordered bag of unique strings 

SET Unordered bag of unique strings SADD Add the item to the set SMEMBERS Return the entire set of items SISMEMBER Check if an item is in the set SREM Remove the item from the set, if it exists ex. SADD mycompany:myteam antonio giulio walter gianluca 

SORTED SET (ZSET) Ordered mapping of string members to floating point scores, ordered by score 

SORTED SET (ZSET) Ordered mapping of string members to floating point scores, ordered by score ZADD Add member with the given score to the ZSET ZRANGE Fetch the items in the ZSET from their positions in sorted order ZRANGEBYSCORE Fetch items in the ZSET based on a range of scores ZREM Remove the item from the ZSET, if it exists ex. ZADD game:users:1132 maxscore 2342 

Redis to go? connect('127.0.0.1', 6379); PhpRedis : https://github.com/nicolasff/phpredis 

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Sessions session.save_handler = redis session.save_path = "tcp://host1:6379?weight=1" 

Cache 

Queues BLPOP, BRPOP, RPOPLPUSH 

PUB/SUB SUBSCRIBER SUBSCRIBER PUBLISHER PUBLISHER PUBLISHER PUBLISHER REDIS pub/sub 

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