[TYPO3-v4] Core performance for 4.6 and beyond

[Steffen Gebert]

Hi,

I played a bit with the cf few days ago and also made the redis Backend 
working, including perparing a tutorial, of how to set it up.
Although I've filled the caches with 10,000 entries, it did not run 
significantly faster than the cf-DB backend or the old backend (for 
mostly full-cached pages).

However, as we have seen, there are other issues, like the pain with 
typoLink (#17401) and its domain retrieval (#16812). Putting such data 
in caches (persistent or transient) could speed up many things and 
prevent double work during page creation / uncached things.

I'd also like to see many other things cached, which are bound to some 
new cache (like a confguration cache replacement, also cleared eg. on 
ext-installation, without killing whole cache_hash). Things to put into, 
which come to my mind: t3lib_compressor reading file_info for ~200 
files, sprite cache (which a bit unhandy as it's only cleared on 
extension installation), addToAllTCAtype (costing 40% of AJAX calls, 
recently improved by Joey by factor ~2 (#17489)), ...

Distinguishing, whether cf is available or not, prevents easy and 
frequently usage, whenever some information could be reused.

So I would really welcome to have it always available, to make more 
frequently use of it.
Nevertheless, things like Dmitry's tweet about way higher load with cf 
than without should be taken into account. It would be nice, if he could 
investigate, why the difference is so big in his case.

Christian, how close are you getting to the old-caching performance, by 
putting the autloader into the cache? I guess it's only 2-3%?

Kind regards
Steffen

-- 
Steffen Gebert
TYPO3 v4 Core Team Member

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