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Super performing websites with TYPO3
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Super performing websites with TYPO3

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Talk given at the TYPO3 Developer days 2011 about boosting TYPO3 performance with Varnish.

Talk given at the TYPO3 Developer days 2011 about boosting TYPO3 performance with Varnish.

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  • Think you've mastered the art of server performance? Think again.\n\n
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  • Transcript

    • 1. Superperformingwebsites withVarnish
    • 2. Outline • Varnish in general • Overview • Inner workings • Varnish and Edge Side Includes • Overview • Integrating with TYPO3 Cache • Different strategies • ESI Vs. Ajax • Purging • Cache control headers • Making static content client cacheable. • Technical walk through of Varnish conf - MOC Best practices
    • 3. VarnishOverview
    • 4. Varnish - defined• 1. To cover with varnish.• 2. To give a smooth and glossy finish to.• 3. To give a deceptively attractive appearance to.
    • 5. Varnish - in a nutshellBrowser Varnish Webserver No Exists in cache? Generate content or Yes serve file. Send appropriate cache No headers. Cacheable? Request file Serve Yes content Insert into mem cache
    • 6. Poul-Henning Kamp“The majority of you are doing that wrong. Not just wrong as in notperfect, but wrong as in wasting half, or more, of your performance.
    • 7. You are doing itwrong! Poul-Henning Kamp“The majority of you are doing that wrong. Not just wrong as in notperfect, but wrong as in wasting half, or more, of your performance.
    • 8. Computer operations• char *p +=5• strlen(p)• memcpy(p,q,l)• Locking• Systemcall• Context shift• Disk access• Filesystem operations
    • 9. Use the operating system - Dontfight the kernel! • Let the operatingsweat keeping track og “hot” dont break your system handle all memory - and “cold” content • Use shared memory for all logging and statistics
    • 10. Purging - the right way • Dont traverse the entire cache when purging objects! • Keep track of purge regular expressions only check objects agains list og purges (but and once).
    • 11. Fighting the kernel
    • 12. Fighting the kernel• System: Create object i memory
    • 13. Fighting the kernel• System: Create object i memory• System determines that object is “cold” • The Kernel runs out of memory • Kernel Pages (caches) ram to disc
    • 14. Fighting the kernel• System: Create object i memory• System determines that object is “cold” • The Kernel runs out of memory • Kernel Pages (caches) ram to disc• System caches object to disk (DiskIO) • System creates file (DiskIO) • Systems requests object from kernel. • Kernel has to fetch from own diskcache • System writes to file (DiskIO). Deletes from RAM
    • 15. Fighting the kernel• System: Create object i memory• System determines that object is “cold” • The Kernel runs out of memory • Kernel Pages (caches) ram to disc• System caches object to disk (DiskIO) • System creates file (DiskIO) • Systems requests object from kernel. • Kernel has to fetch from own diskcache • System writes to file (DiskIO). Deletes from RAM• System: Object is needed, find from own disk cache, and insert into RAM • Kernel has to flush other stuff to disc, to make room for new object. • ....
    • 16. Performance• Onetiming purposes is 7 system calls - 4 are for cached delivery• Can deliver about 150.000 r/sec (cached content)
    • 17. Performance• Onetiming purposes is 7 system calls - 4 are for cached delivery• Can deliver about 150.000 r/sec (cached content)
    • 18. Performance• Onetiming purposes is 7 system calls - 4 are for cached delivery• Can deliver about 150.000 r/sec (cached content)
    • 19. Edge sideIncludes
    • 20. Short term cacheLong term cache
    • 21. Varnish - edge side includesBrowser Varnish Webserver No Exists in cache? Generate content or Yes serve file. Send appropriate cache No headers. Cacheable? No Contains ESI Yes markers? Request file Insert into mem cache Yes Generate partial content Stitch Insert into content mem cache together
    • 22. Using ajax for dynamic contentBrowser Varnish Webserver No Exists in cache? Generate content or Yes serve file. Send appropriate cache No headers. Cacheable? Serve Yes content Request file Insert into mem cache Generate partial content
    • 23. Time for someactionLet’s play!
    • 24. ConfigurationBest practicesMOC Style
    • 25. Best practices - purging • Clear cache for object with force-reload • Allow purging fromgiven host host/networks, and purge only for predefined
    • 26. Best practices - respect cache-control headers
    • 27. Best practices - respect cache-control headers • By default respect cache headers • Varnish default TTL set to 0s (default is not 0, depending on build) • No cache headers - no caching in varnish • Strip cache headers when serving to client
    • 28. Best practices - respect cache-control headers • By default respect cache headers • Varnish default TTL set to 0s (default is not 0, depending on build) • No cache headers - no caching in varnish • Strip cache headers when serving to client • ...except for resources • png|gif|jpg|swf|js|css are always cached. In varnish for 1 week, and in client browser for 1hour.
    • 29. Best practices - respect cache-control headers • By default respect cache headers • Varnish default TTL set to 0s (default is not 0, depending on build) • No cache headers - no caching in varnish • Strip cache headers when serving to client • ...except for resources • png|gif|jpg|swf|js|css are always cached. In varnish for 1 week, and in client browser for 1hour. • ... and TYPO3 backend • Never cache typo3/ content (except resources which can be cached)
    • 30. Disable cache when front-end userlogged in • Write special cooking upon login to TYPO3 front-end • Varnishcontent (except for resources) and passes configuration respects cookie
    • 31. Other stuff • Edge side includes • Allow stale content for 24 hours • Pipe typo3 login (instead of pass) • Fixes problem with login whn load ballancing
    • 32. The VCL walkthrough • Check the in production.vcl moc_cache extension (1.1 or later)
    • 33. I want mywebsite toperform!So where can I get the moc_varnish ext?
    • 34. TYPO3 Ext repo, or GIT • Fetch from TYPO3 Ext Repo • Or clone from http://gerrit.mocsystems.com/ p/moc_varnish.git • Forge: http://forge.typo3.org/projects/ extension-moc_varnish/
    • 35. Contact details • E-mail: janerik@mocsystems.com • Twitter: revsbech • Facebook: revsbech • Website: www.mocsystems.com