Redis

To nie będzie kolejna prezentacja "getting started" żywcem wzięta z dokumentacji. Pokażę moc drzemiącą w tym narzędziu na prawdziwych przykładach i powiem Ci dlaczego MUSISZ zacząć korzystać z Redisa oraz dlaczego Memcached przy nim wymięka.

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7. MEMCACHED • key-value store • in-memory • super fast
8. REDIS • key-value store • in-memory • super fast
9. REDIS • Memcached on steroids • 250 bytes 512 MB keys • 1 MB 512 MB values
10. REDIS • optional persistence (snapshotting/AOF) • replication • Lua scripting
11. REDIS • strings • hashes • lists • sets • sorted sets • bitmaps • hyperloglogs
12. #1 CONTACTS
14. MariaDB [goldenline]> DESCRIBE user_contact; +-------+---------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +-------+---------+------+-----+---------+-------+ | id1 | int(11) | NO | PRI | NULL | | | id2 | int(11) | NO | PRI | NULL | | +-------+---------+------+-----+---------+-------+ 2 rows in set (0.00 sec)
15. #1.1 MEMCACHE 1. SELECT id2 FROM user_contact WHERE id1 = 1238102 2. implode() 3. set user.contact.1238102 0 3600 3072
 100,2256,6315,6575,7663,8222,23493,43126,46317…
16. #1.1 REDIS 1. SELECT id2 FROM user_contact WHERE id1 = 1238102 2. SADD user.1238102.friends "100" "2256" "6315" "6575"…
17. #1.2 MEMCACHE 1. get user.contact.1238102 2. explode()
18. #1.2 REDIS 1. SMEMBERS user.1238102.friends
20. #1.3 MEMCACHE 1. get user.contact.1238102 2. explode() 3. array_rand()
21. #1.3 REDIS 1. SRANDMEMBER user.1238102.friends 3
22. O(1) time complexity
23. O(N) time complexity
24. #1.4 MEMCACHE 1. get user.contact.1238102 2. explode() 3. array_push() 4. implode() 5. set user.contact.1238102 0 3600 3080
 100,2256,6315,6575,7663,8222,23493,43126,46317…
25. #1.4 REDIS 1. SADD user.1238102.friends "1159658"
26. #1.5 MEMCACHE 1. get user.contact.1238102 2. explode() 3. array_search() 4. unset() 5. implode() 6. set user.contact.1238102 0 3600 3072
 100,2256,6315,6575,7663,8222,23493,43126,46317…
27. #1.5 REDIS 1. SREM user.1238102.friends "1159658"
30. #1.6 MEMCACHE 1. get user.contact.1238102 user.contact.1159658 2. 2 x explode() 3. array_intersect()
31. #1.6 REDIS 1. SINTER user.1238102.friends user.1159658.friends
33. #1.6 MEMCACHE 1. get user.contact.1238102 user.contact.1159658 2. 2 x explode() 3. array_intersect() 4. count()
34. #1.6 REDIS 1. SINTERSTORE foo user.1238102.friends user.1159658.friends
36. #2 WVMP Who Viewed My Profile
38. MEMBER + SCORE Sorted Sets
39. #2.1 REDIS 1. ZADD user.1238102.wvmp 1447585200 "1159658"
40. #2.2 REDIS 1. ZREVRANGE user.1238102.wvmp 0 4
43. #2.3 REDIS 1. ZCOUNT user.1238102.wvmp 1444989600 +inf
44. #4 ACTIVITY
45. #4.1 REDIS 1. SETBIT 2015-11-15 1159658 1
46. #4.2 REDIS 1. BITCOUNT 2015-11-15
47. #4.3 REDIS 1. SETBIT 2015-11-14 1159658 1 2. SETBIT 2015-11-15 1159658 1 3. BITTOP AND foo 2015-11-14 2015-11-15
48. #4.3 REDIS 1. SETBIT 2015-11-14 1159658 1 2. SETBIT 2015-11-15 1159658 1 3. BITTOP OR foo 2015-11-14 2015-11-15
49. #5 DEBUG
50. #5 DEBUG redis-cli MONITOR
52. #6 PIPELINING
53. PIPELINING 1. Client: INCR X 2. Server: 1 3. Client: INCR X 4. Server: 2 5. Client: INCR X 6. Server: 3
54. PIPELINING 1. Client: INCR X 2. Client: INCR X 3. Client: INCR X 4. Server: 1 5. Server: 2 6. Server: 3
55. PIPELINING 1. Client: MULTI 2. Client: INCR X 3. Client: INCR X 4. Client: INCR X 5. Client: EXEC # [1,2,3]
56. #7 LUA
58. #PROTIP redis-cli SETBIT PHPCon 4294967295 1
59. #PROTIP use phpredis the client written in C as a PHP module
60. Q&A
61. ! Obserwuj @sebgrodzicki