Cashing For Cash, part 1 DPC 2009

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Notes on slide 1

Websites have more pages than you think. Performance effects are aggregate.

Database Buffer Cache Network etc

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

Missing indexes. Poor schema architecture. Bad database tuning. Selecting too many columns / rows

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

Image manipulation Encryption system/exec/etc. function calls Solutions Off load work to other machines Gearman and similar are your friends

Performing extensive looping text replacements Performing extensive looping in general Badly written Regular Expressions Extensive recursive functionality

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Cashing For Cash, part 1 DPC 2009 - Presentation Transcript

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++