Making dynamic sites scale like static sites Wim Godden Cu.be Solutions

Owner of Cu.be Solutions (http://cu.be)

PHP developer since 1997

Developer of OpenX

Zend Certified Engineer

Zend Framework Certified Engineer

MySQL Certified Developer

System/network engineers ?

Managers ?

Varnish ?

Nginx ?

Making dynamic sites scale like static sites (aka "Nginx-PHP on steroids") Wim Godden Cu.be Solutions

Reverse proxy cache / http accelerator / …

Caches (parts of) pages in memory

Nginx usually scales better (but doesn't have VCL)

Images, js, css

Very large files (it's not a file server !)

Requests with Set-Cookie

User-specific content

ESI -> no caching on user-specific content ? Logged in as : Wim Godden 5 messages TTL = 5min TTL=1h TTL = 0s ?

Dynamic content Request Varnish Ideally user X : /top /top request to Apache same user Y : /top /top request to Apache same user X : /top /top request to Apache if unchanged : served from cache user Y : /top /top request to Apache if unchanged : served from cache

Coming to Nginx soon... Logged in as : Wim Godden 5 messages NEWS Menu

Coming to Nginx soon... <esim:include src=&quot;/news&quot; ttl=&quot;5m&quot; /> <esim:include src=&quot;/menu&quot; ttl=&quot;1h&quot; /> <esim:include src=&quot;/top&quot; usesession=&quot;1&quot; ttl=&quot;1h&quot; />

Requesting /page (1 st time) Nginx /page /page

Requesting /page ESI subrequests (1 st time) Nginx /menu.php /news.php /top.php ($sessionid$)

Requesting /page (next time) Nginx /page /menu.php /news.php /top.php ($sessionid$) /page

No hits for user-specific content

Not even for non-specific content

Do we need TTLs ? Logged in as : Wim Godden 5 messages <esim:include src=&quot;/news&quot; ttl=&quot;5m&quot; /> <esim:include src=&quot;/menu&quot; ttl=&quot;1h&quot; /> <esim:include src=&quot;/top&quot; usesession=&quot;1&quot; ttl=&quot;1h&quot; />

Not for user-specific content

TTL for user-specific content is required (defaults to 5min)

How many Memcache requests ? Logged in as : Wim Godden 5 messages <esim:include src=&quot;/news&quot; ttl=&quot;5m&quot; /> <esim:include src=&quot;/menu&quot; ttl=&quot;1h&quot; /> <esim:include src=&quot;/top&quot; usesession=&quot;1&quot; ttl=&quot;1h&quot; />

Local = faster

Easier to debug performance issues (esp. with slow script feature)

Stable : Feb 2012

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