Redis - Key-value store enhanced

Introduction to some redis data types and manipulation

Transcript

1. Redis key-value store enhanced
2. Storing and retrieving > SET what:is:love? "baby ..." > GET what:is:love? => "baby ..."
3. Deleting keys > DEL article:1 => 1 | 0
4. SET-if-not-exists > SETNX video:63:title "The Doors" => 1 | 0
5. Increment > SET online:users 0 > INCR online:users => 1 > INCR online:users => 2 > GET online:users => 2 > DEL online:users > INCR online:users => 1
6. Expiring - TTL > SET balance:sheet "<p>$1</p>" > EXPIRE balance:sheet 60 > TTL balance:sheet => 59 > TTL ruby => -1
7. Lists (Ordered) > RPUSH headlines 86 > RPUSH headlines 77 > LPUSH headlines 458 > LRANGE headlines 0 -1 => ["458", "86", "77"] > LRANGE headlines 1 2 => ["86", "77"]
8. Lists (cont.) > LLEN headlines => 3 > LPOP headlines => "458" > RPOP headlines => "77"
9. Sets > SADD social:networks twitter > SADD social:networks facebook > SADD social:networks google+ > SCARD social:networks => 3
10. Sets (cont.) > SREM social:networks twitter => 1 > SCARD social:networks => 2 > SISMEMBER social:networks twitter => 0 > SISMEMBER social:networks google+ => 1
11. Sets (cont.) > SMEMBERS social-networks => ["google+", "facebook"] > SRANDMEMBER social-networks => ["facebook"]
12. Sets (cont.) > SADD cool-sites facebook > SINTER social-networks cool-sites => ["facebook"]
13. Sorted Sets (by score) > ZADD languages 10 Ruby > ZADD languages 9.5 Java > ZADD languages 4 C# > ZRANGE languages 0 -1 => ["C#", "Java", "Ruby"]
14. Sorted Sets (cont.) > ZREVRANGE languages 0 -1 => ["Ruby", "Java", "C#"] > ZRANGEBYSCORE languages 5 inf => ["Java", "Ruby"] > ZREVRANGEBYSCORE languages inf 5 WITHSCORES LIMIT 0 10 => ["Ruby", "10", "Java", "9.5"]
15. Sorted Sets (cont.) > ZSCORE languages Ruby => 10 > ZCOUNT languages 3 5 => 1 > ZREMRANGEBYRANK languages 0 1 => 2 > ZRANGE languages 0 -1 WITHSCORES => ["Ruby", "10"]
16. Hashes > HMSET user:45 email gui@mello.com name Guilherme age 27 > HGETALL user:45 => ["email", "gui@mello.com", "name", "Guilherme", "age", "27"]
17. Hashes (cont.) > HSET user:45 name Mello > HGET user:45 name => Mello
18. Hashes (cont.) > HLEN user:45 => 3 > HDEL user:45 name > HEXISTS user:45 name => 0 > HKEYS user:45 => ["email", "age"]
19. > RPUSH numbers 50 > RPUSH numbers 43 > LPUSH numbers 67 > LRANGE numbers 0 -1 => ["67", "50", "43"] > SORT numbers => ["43", "50", "67"] Sorting
20. Sorting (cont.) > LPUSH things car > RPUSH things ball > RPUSH things pen > LRANGE things 0 -1 => ["car", "ball", "pen"] > SORT things ALPHA DESC => ["pen", "car", "ball"]
21. Sort by external keys > LPUSH account:ids 2 > RPUSH account:ids 3 > RPUSH account:ids 1 > SET account:2:logins 50 > SET account:3:logins 23 > SET account:1:logins 12
22. > LRANGE account:ids 0 -1 => ["2", "3", "1"] > SORT account:ids BY account:*: logins => ["1", "3", "2"] Sort by external keys (cont.)
23. Retrieving external keys > SET account:1 "dhh" > SET account:2 "tenderlove" > SET account:3 "matz"
24. Retrieving external keys (cont.) > SORT account:ids BY account:*:logins GET account:* => ["dhh", "matz", "tenderlove"] > SORT account:ids BY account:*:logins GET account:* GET # => ["dhh", "1", "matz", "3", "tenderlove", "2"]
25. Storing the result list > SORT account:ids BY account:*:logins GET account:* GET # STORE account:list > LRANGE account:list 0 -1 => ["dhh", "1", "matz", "3", "tenderlove", "2"]
26. Sorting and retrieving with hashes > HMSET account:1:profile logins 12 > HMSET account:2:profile logins 50 > HMSET account:3:profile logins 23 > HMSET account:1:hash name dhh > HMSET account:2:hash name tenderlove > HMSET account:3:hash name matz
27. Sorting and retrieving with hashes (cont.) > SORT account:ids BY account:*:profile->logins GET account:*:hash->name => ["dhh", "matz", "tenderlove"]
28. Check out more on http://redis.io or http://lmgtfy.com/?q=redis Thanks!