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5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
5 things MySql
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5 things MySql

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5 things you need to know about MySQL if you don't have a DBA. From OSBridge '09.

5 things you need to know about MySQL if you don't have a DBA. From OSBridge '09.

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  • 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
  • API SHOULD KNOW THE DIFF proxy as an option if API not possible. scale writes. write own interfaces? check on it. btree index larger than memory -- writes get _slow_ Memcached – good for short lived data and caching wafflegrid -- patches to mysql -- innodb bufferpool over memcached
  • 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
  • Transcript

    • 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
    • 2.
      • changing ecosystem
      • versions
      • storage engines and locking
      • backups
      • scaling
      • free tools
      www .BlueGecko . net
    • 3.
      • changing ecosystem
      • MySQL ->
      • Sun ->
      • Oracle
      • Monty Program AB
      • OpenDB Alliance
      www .BlueGecko . net
    • 4. www .BlueGecko . net
    • 5.
      • versions
      • 5.0 – stable. (do i need to say more?)
      • 5.1 – fresh feature set
      • – many open bugs
      • – partitioning
      • – row base replication
      • – mysqlslap
      • 5.4 – 5.1 ++ google patches
      • – scalability improvements -> multicore
      • – enhanced monitoring / diagnostic
      • – sane defaults for my.cnf out of the box
      www .BlueGecko . net
    • 6. www .BlueGecko . net
    • 7.
      • a short diversion
      • from High Performance
      • MySQL 2 nd Edition (HPM2e)
      • -Baron Schwartz, Peter Zaitsev,
      • Vadim Tkachenko, and Jeremy
      • Zawodny
      • (don’t mistake 1 st Edition for 2 nd.
      • 1 st is dangerously out of date
      • unless you’re running version 4.0)
      www .BlueGecko . net
    • 8.
      • storage engines
      • innodb
      • myisam
      • merge
      • blackhole
      • archive
      • federated
      www .BlueGecko . net
    • 9.
      • and locking
      • innodb
      • myisam
      www .BlueGecko . net
    • 10.
      • and locking
      www .BlueGecko . net
    • 11.
      • backups
      • take them
      • and test a restore
      www .BlueGecko . net
    • 12.
      • backups
      • mysqldump is not always a valid backup
      • replication is easiest
      • (and it gets you a warm standby)
      • InnoDB hot backup
      • XtraBackup
      • mylvmbackup
      www .BlueGecko . net
    • 13.
      • backups
      www .BlueGecko . net
    • 14.
      • scale
      • when it’s time to
      • go big, what are
      • the options?
      • separate reads
      • from writes
      www .BlueGecko . net
    • 15.
      • scale
      • write 1 / read many
      • partitioning / sharding
      • multimaster / rings
      • memcached
      • wafflegrid
      www .BlueGecko . net
    • 16.
      • another
      • short
      • diversion
      • to swap or
      • not to swap
      • that is the
      • question
      www .BlueGecko . net
    • 17.
      • free tools
      • Innotop
      • maatkit
      • MySQL proxy
      • monitoring/trending
      • cacti templates
      • $monitoring_server
      • – the one you know
      www .BlueGecko . net
    • 18. additional resources
      • irc.freenode.org
        • #mysql
        • #maatkit
      • mysql.com
      • HPM2e - Baron Schwartz, Peter Zaitsev, Vadim Tkachenko, and Jeremy Zawodny
      www .BlueGecko . net
    • 19. credits
      • flickr
      • Make: biosphere - kevino
      • MySQL mints - jimwinstead
      • 5 – losmininos
      • storage- shuttercat7
      • clones - adactio
      • Bell Labs - sodapop81
      • License plate - severud
      • tools – meanestindian
      • console - hermzz
      • other
      • swap image
        • http://www.vocw.edu.vn/content/m10106/latest/
      • special thanks to mike hamrick for suggestions on content and slides
      www .BlueGecko . net
    • 20. Blue Gecko and contact info
      • [email_address]
      • [email_address]
      • @sarahnovotny
      • @bluegeckodba
      • senk on #mysql
      www .BlueGecko . net Blue Gecko provides Remote DBA services for companies around the world 7x24x365 support including monitoring, performance analysis, proactive maintenance and architectural guidance for small and large datasets.

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