5 things MySql
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This document summarizes 5 key things to know about MySQL if you don't have a dedicated database administrator (DBA). It covers MySQL versions, storage engines and locking, backups, scaling options, and free tools for monitoring and troubleshooting MySQL.
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you know databases, how hard can MySQL be?
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5 things MySql
- 1. 5 things you need to know about MySQL (if you don’t have a DBA) sarah novotny – [email_address] MySQL and LAMP services www .BlueGecko . net
- 4. www .BlueGecko . net
- 6. www .BlueGecko . net
Editor's Notes
- Not locked into proprietary space… many options. Based from the same code tree Lib mysql vs lib drizzle – licensing gotcha libmysql gpl libdrizz bsd drizzle Maria Our delta Google patches Percona xtradb
- Google patches include a better malloc And completely changed locking
- Choose 5.1 or 5.4 only if you need the featuresets.
- •❑ inno - row with exception •❑ myi - table -- fast in some cases and search cases ( fast inserts? without lock )•❑federated - replication not multiple master. •❑ blackhole handy for logging without inserting into db or skipping a db for fake muliple master
- Much performance pain come into play with lock contention
- Much performance pain come into play with lock contention Names changed to protect the innocent
- Understand MTR and see if you meet that goal. tarball /dump / cpio not a valid backup
- •❑ tarball /dump / cpio not a valid backup •❑ replication•❑innohot•❑lvm backup script... lvmbackup? •❑ mysqldump = 100% inno ok. single transaction .•❑xtrabackup -- free innohot
- LVM and slaves give easy opportunities for creating clones for testing
- Begin with having your application understand that reads and writes are different
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- If you’re worried about swapping, use huge page support for mysql (linux doesn’t swap out huge pages
- •❑ disk•❑memory•❑up/down•❑cachehit -- baseline defiinition•❑replication •❑ mktablesync•❑mkchecksum