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Caching For Cash Dutch PHP Conference – Amsterdam,  June 2009
Head of R&D at  echolibre , pear extraordinaire, published author, party person and an Icelande r
Works at  Jelsoft , php core developer, published author, party person and a Scottish person
 
Identify the performance issues
Analyze the issue
Fix the issue
 
Locate
Diagnose
Recitfy
 
 
 
 
 
APD XDebug
ab Siege Apache Flood Memtrack XHProf GUIMark Hardinfo Bonnie++
 
 
 
 

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Cashing For Cash, part 1 DPC 2009

Editor's Notes

  1. Websites have more pages than you think. Performance effects are aggregate.
  2. Database Buffer Cache Network etc
  3. Overloaded databases Badly configured machines NFS / File system contention Solutions: Get a real system administrator Pick the right database for the job Clustered / Proxy databases
  4. Missing indexes. Poor schema architecture. Bad database tuning. Selecting too many columns / rows
  5. Proxy callout to external services Remote PHP includes REST / AJAX SOAP / RPC calls Solutions: Cache the network calls Design your AJAX so you can easily cache it
  6. Image manipulation Encryption system/exec/etc. function calls Solutions Off load work to other machines Gearman and similar are your friends
  7. Performing extensive looping text replacements Performing extensive looping in general Badly written Regular Expressions Extensive recursive functionality