[TYPO3-project-4-3] changing the page cache to use the new caching framework

[Dmitry Dulepov [typo3]]

Hi!

Ingo Renner wrote:
> now that t3lib_cache is in trunk I had the idea to change the existing 
> page cache to use the new framework.
> 
> biggest con though:
> * it would break backwards compatibility

If you mean it will break extensions that clear cache_* tables, I say "Do it!" :) TCEmain should still clear cache properly after this change.

> especially the thing with the tags got me some nice ideas:
> 
> After moving to the new system it would dramatically easier for people 
> to "tag" pages in their extensions. with whatever tags they want and 
> clear those cache entries whenever their extension needs to. This would 
> make the system way more flexible and more dynamic

I think we should do it before the next week. Preferably before Thursday as we may need it next week @ Hackontest. Do you have time to do it quick?

> Example:
> a page showing a list of tt_news records in a list view. tt_news could 
> go and add tags in a way like this:
> 
>     // tt_news_X are the records shown on that page
> $TSFE->page->addTags('tt_news_list, tt_news_1, tt_news_2, tt_news_3');

addTags or addCacheTags?

> And of course the core would tag the page with stuff we already have 
> like the cHash:
> 
> $TSFE->page->addTags('core_cHash_######');

Looks like we will need certain rules for tag names.

> Looking up and clearing pages by tag is then quite easy using 
> t3lib_cache...
> 
> Any comments?

Sounds wonderful! :) I am very enthusiastic and willing to test it when patch is ready :)

-- 
Dmitry Dulepov
TYPO3 Core team
My TYPO3 book: http://www.packtpub.com/typo3-extension-development/book
In the blog: http://typo3bloke.net/post-details/debugging_symlinked_typo3_files_with_komodo_ide_on_mac/