[TYPO3-core] RFC: #11271: Use 2 level cache for BEgetRootLine

[Dmitry Dulepov]

Hi!

Steffen Kamper wrote:
> Problem:
> Now there is only a first level cache for BEgetRootLine, which is stored
> in a global var.
> 
> Solution:
> The patch
> * use a static var for first level cache
> * stores second level cache in cache_hash

How does this work after I move the page with subpages from one branch of the page tree to another? For example, I have:

==============
Globe
 |- Level 1A
   |- Level 2A
     |- Level 3A
 |- Level 1B
   |- Level 2B
     |- Level 3B
==============

I do something in the BE with "B" pages and rootlines for 1B, 2B and 3B are cached. Next I move 1B inside 2A.

What happens with BEgetrootline() results for 1B, 2B and 3B if your patch is applied? Will the function still return correct rootlines?

-- 
Dmitry Dulepov
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