[TYPO3-core] RFC: #8515: Speed up tslib_cObj->getTreeList by caching its results

[Michael Stucki]

Dmitry Dulepov [typo3] wrote:

> My main concern is that it will create lots of entries when they are not
> really needed by site owner. I am thinking purely of myself right now. I
> would not want extra table similar to cache_hash with thousands of entries
> taking most database space. 100% imho...

So how about using cache_hash then? I just thought about the same today, so
good to see it in your post, too.

cache_hash uses a combined key of hash and type identifier which can be any
action like those for example:
- PAGES_TSconfig
- TMPL CONDITIONS - ALL
- MENUDATA
- FE_TREELIST (proposal for new key)

etc.

The reason behind that is that I think we will need a similar cache for
t3lib_pageSelect::getRootLine() and similar functions soon.

A possible compromise for Dmitrys doubts could be implemented by a
configuration setting of hash types which are never cached, e.g.
$TYPO3_CONF_VARS[SYS][skipHashTypes] = MENUDATA,FE_TREELIST

What do you think?

- michael
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