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Percona XtraDB 集群
- 1. Percona XtraDB Cluster powered by Galera Vadim Tkachenko Percona Inc, co-founder, CTO www.percona.com www.mysqlperformanceblog.com
- 2. This talk online • PowerPoint • http://bit.ly/PXC-meetup • PDF • http://bit.ly/PXC-meetup-pdf • Google Docs • http://bit.ly/PXC-meetup-gdocs Percona XtraDB Cluster
- 3. This talk Percona XtraDB Cluster
- 4. What is HA Percona XtraDB Cluster
- 5. Availability by redundancy Percona XtraDB Cluster
- 6. Duplicate resources Percona XtraDB Cluster
- 9. Probability of failure Percona XtraDB Cluster
- 10. Easy ? Not if we deal with databases Percona XtraDB Cluster
- 12. Redundancy ? Percona XtraDB Cluster
- 13. Database availability is hard Percona XtraDB Cluster
- 17. What is wrong with MySQL replication ? Percona XtraDB Cluster
- 18. What is wrong with MySQL replication ? Percona XtraDB Cluster
- 19. What is wrong with MySQL replication ? Percona XtraDB Cluster
- 23. Didn’t we just reinvent DRBD ? Percona XtraDB Cluster
- 26. Percona XtraDB Cluster Free and Open Source Percona XtraDB Cluster
- 27. Percona XtraDB Cluster Percona XtraDB Cluster
- 29. Virtually synchronous Percona XtraDB Cluster
- 32. Multi-master: MySQL Percona XtraDB Cluster
- 33. Multi-master: XtraDB Cluster Percona XtraDB Cluster
- 35. Parallel apply: MySQL Percona XtraDB Cluster
- 36. Parallel apply: XtraDB Cluster Percona XtraDB Cluster
- 38. XtraDB Cluster data consistency Percona XtraDB Cluster
- 40. Node provisioning Percona XtraDB Cluster
- 42. Pick only TWO Percona XtraDB Cluster
- 43. Network failure Percona XtraDB Cluster
- 44. MySQL Replication Percona XtraDB Cluster Access to all systems -YES Data consistency - NO
- 45. XtraDB Cluster Percona XtraDB Cluster Access to all systems - NO Data consistency -YES
- 46. 3 nodes is the minimal recommended configuration Percona XtraDB Cluster
- 47. Split brain Percona XtraDB Cluster Which system to make available ?
- 48. Split brain Percona XtraDB Cluster But you deal with consequences You still can have this setup
- 49. Choice Percona XtraDB Cluster MySQL Replication: Access to all systems Data consistency XtraDB Cluster:
- 51. Percona XtraDB Cluster details Percona XtraDB Cluster
- 56. So, is this a perfect solution? Percona XtraDB Cluster
- 57. Limitations some will be solved later Percona XtraDB Cluster
- 58. Only InnoDB tables are supported Percona XtraDB Cluster
- 59. OPTIMISTIC locking for transactions on different servers http://en.wikipedia.org/wiki/Optimistic_concurrency_control Percona XtraDB Cluster
- 60. Traditional locking Percona XtraDB Cluster
- 61. Optimistic locking Percona XtraDB Cluster
- 62. The write performance is limited by weakest node Percona XtraDB Cluster
- 63. Write performance Percona XtraDB Cluster
- 64. For write intensive applications there could be datasize limit per node Not physical but logical Percona XtraDB Cluster
- 65. Join process. Step 1 Percona XtraDB Cluster
- 66. Join process. Step 2 Percona XtraDB Cluster
- 67. Join process: step 3 Percona XtraDB Cluster
- 68. This is software + hardware solution Percona XtraDB Cluster
- 69. InnoDB write performance Percona XtraDB Cluster
- 70. InnoDB performance + ACID Percona XtraDB Cluster
- 71. Cluster performance Percona XtraDB Cluster
- 72. Join process Percona XtraDB Cluster
- 73. State Transfer Percona XtraDB Cluster
- 74. Snapshot State Transfer Percona XtraDB Cluster
- 75. Incremental State Transfer Percona XtraDB Cluster
- 78. Scaleability is similar to availability Percona XtraDB Cluster
- 79. XtraDB Cluster: Reads scalability is easy Percona XtraDB Cluster
- 80. Write scalability is complicated Percona XtraDB Cluster
- 81. N servers scale to : Percona XtraDB Cluster
- 82. 10 servers scale to : Percona XtraDB Cluster
- 83. FAQ Questions I am asked Percona XtraDB Cluster
- 84. It looks so easy. Why did not you implement it earlier? It is not easy. Computer science of group communication and distributed transactions. Credits to Codership Oy Percona XtraDB Cluster
- 85. How fast is it? Reasonably fast. Percona XtraDB Cluster
- 86. Can I replicate XtraDB Cluster to MySQL Replication? Yes Percona XtraDB Cluster
- 87. Percona XtraDB Cluster Async MySQL Replication
- 88. Would I install it on a production system? Yes. I am going to upgrade MySQLPerformanceBlog.com to use XtraDB Cluster Percona XtraDB Cluster
- 89. How it is compared to MySQL Cluster? It is different Percona XtraDB Cluster
- 90. XtraDB Cluster MySQL Cluster Easy to migrate Easy to use Cloud / EC2 Changes in an application Write scaling 99.999% Percona XtraDB Cluster
- 91. Resources • http://www.percona.com/software/percona-xtradb-cluster/ • http://www.codership.com/wiki/doku.php • Virtual synchrony • http://en.wikipedia.org/wiki/Virtual_synchrony • CAP Theorem • http://en.wikipedia.org/wiki/CAP_theorem • Optimistic locking • http://en.wikipedia.org/wiki/Optimistic_concurrency_control Percona XtraDB Cluster
- 92. Credits • WSREP patches and Galera library is developed by Codership Oy Percona XtraDB Cluster
- 93. Thank you! Percona XtraDB Cluster