[TYPO3-core] RFC: #11260: Feature: Speed up xml2array by adding a two level cache

[Rupert Germann]

FYI: Committed to trunk rev. 5556

greets
rupert

Fabrizio Branca wrote:

> This is an SVN patch request.
> 
> Type: New feature
> 
> Bugtracker references:
> http://bugs.typo3.org/view.php?id=11260
> 
> Branches:
> trunk
> 
> Problem:
> When profiling backend code (escpecially when there is templavoila
> involved) you'll notice that t3lib_div::xml2array() is one of the most
> "expensive" parts.
> 
> Solution:
> By introducing a cache this can by dramatically reduced (have a look at
> http://www.fabrizio-branca.de/fileadmin/statistics_xml2array.ods for
> some profiling statistics) in both backend and frontend.
> 
> I've implemented a first level cache (as a static variable) and a second
> level cache (using the new dbbackend), to prevent same xml string to be
> rendered more than once.
> 
> Have a nice day,...
> 
> Fabrizio