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

[Oliver Klee]

Hi Ingo,

some questions concerning the functionality:

- Do we really need to store the cache in the DB or would a cache in a 
static variable suffice?
- Why is the cache cleared randomly? I think this will make testing a 
lot harder if this isn't deterministic.

Some issue concerning coding style (as decided upon in the CGL session):

- Please use lowercase "true" and "false".
- Please make all lines shorter than 80 characters (also the function 
declarations).
- Please align the comments with the code:

   // comment for the next code line
   code ...;


Regards,


Oliver