1. MySQL
mysql-casual#1 (2010-12-10)
@xaicron
2010 12 13

2. • @xaicron ( )
• works at DeNA
• blog http://blog.livedoor.jp/xaicron/
2010 12 13

3. Perl
2010 12 13

4. JPerl Advent Calender
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5. 2010 12 13

6. http://perl-users.jp/articles/advent-calendar/help.html
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7. 2010 12 13

8. MySQL
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9. 2010 12 13

10. 2010 12 13

11. 2010 12 13

12. 2010 12 13

13. myfinder
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14. 2010 12 13

15. cv.
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16. Agenda
• Sharding
• Partitioning
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17. Sharding
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18. Sharding
• Shared Nothing
• DB
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19. user_id
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20. 2010 12 13

21. Sharding
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22. DB
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23. •
• Disk IO
•
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24. Sharding
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25. • JOIN
•
•
• orz
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26. 2010 12 13

27. user_id auto_increment
DB
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28. DB
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29. 2010 12 13

30. •
•
•
•
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31. Partitioning
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32. Partitioning
•
• SELECT
Partition drop
• 5.1 --with-partition
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33. 2010 12 13

34. 2010 12 13

35. Partitioning
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36. •
• Partition
• Partition SELECT
• SUM() COUNT()
•
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37. 2010 12 13

38. ALTER TABLE
table_name
DROP PARTITIONS!!
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39. Partition
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40. 2010 12 13

41. 2010 12 13

42. SELECT
Partition
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43. CREATE TABLE `tweet` (
`id` bigint(20) NOT NULL,
`tweet` varchar(140) NOT NULL,
`created_on` timestamp NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8
PARTITION BY RANGE ( UNIX_TIMESTAMP(created_on) ) (
PARTITION p20101210 VALUE LESS THAN (1291906800),
PARTITION p20101211 VALUE LESS THAN (1291993200),
PARTITION p20101212 VALUE LESS THAN (1292079600),
PARTITION p20101213 VALUE LESS THAN (1292166000),
PARTITION p20101214 VALUE LESS THAN (1292252400)
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44. 20101210
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45. SELECT * FROM tweet WHERE created_on >
‘20101210’ AND tweet = ‘mysqlcasual’;
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46. p20101210
partition
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47. EXPLAIN PARTITION SELECT ...
partition
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48. Partitioning
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49. • PARTITION
created_on)
KEY (
Primary Key
• UNIQ
• SELECT
• UNIX_TIMESTAMP()
v5.1.43
!!
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50. 2010 12 13

51. •
• MySQL
• (
cron
)
• !!
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52. cv.
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53. Sharding Partitioning
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54. 2010 12 13

55. 2010 12 13

56. 2010 12 13

57. 2010 12 13