MySQL Overview Jed Reynolds Write Your Questions on the Board! Landscape, Engines, HA, Performance Questions

Overview Landscape MySQL Engines Replication High Availability High Performance Questions

RDBMS Landscape Smaller: SQLite, FireBird, BerkeleyDB MySQL, PostgeSQL, SQL Server MySQL Enterprise, NDB Larger: Oracle Enterprise, DB2, other OLTP

Oracle v MySQL? Boring

MySQL Landscape Various Editions: Community,Standard, Standard, Enterprise User Tools: Workbench, Query Analyzer, Monitor Commercial Variants Percona, Kickfire Sister projects: MariaDB, askmonty.org Drizzle, drizzle.org

MySQL Engines InnoDB (v: XtraDB, PBXT, Aria) ACID, Triggers, Transactions, MVCC MyISAM Non ACID, fast NDB – in memory, cluster BerkeleyDB - keystore Memory Archive Federated

MySQL Replication Built in, simple, multi-master Log shipping Single threaded Capture log position and snapshot Ignore some tables Cross-engine

High Availability No Backup: No Replication: No HA You Want Montioring Backup your logs and data N+1, N+2 sized pools Health criteria Single v. Multi master, failover Table Maintenance, Partitioning Failure containment (when do you shard?)

High Performance 1)Avoid the database 1)Is a DB correct tool? 2)Pregenerated results? 3)Application caching? 4)Results caching, memcache

Multiple Data Stores? Your RDBMS doesn't need to do it all NoSQL is vague Document, key store, or graph Full Text indexes: Sphinx, Lucene, Solr

2: Avoid your disk 1)Judcial query caching 2)Order by + group by = filesort 3)Avoid table scans, use indexes 4)Multi Column Indexes

3:Concurrency 1)Table locking 2)Separate servers/engines per task 3)Replication 4)Partitioning 5)Sharding

4:Disk thruput 1)Raid 2)Partitioning 3)Sharding

5:Maintenance Contain maintenance impact Practice in your dev env Alters, Indexing Optimize Table Repair Table

Questions, Sources Does Luke Skywalker use Oracle or CouchBase? Askmonty.org Drizzle.org Percona.com mysqlperformanceblog.com Maatkit

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