[TYPO3-mvc] blog_example - caching issues?

[Dan Osipov]

I haven't tested how efficient the new caching framework is on clearing 
large caches, but I will.

Dan Osipov
Calkins Media
http://danosipov.com/blog/

Martin Ficzel wrote:
> Dan Osipov schrieb:
>> I think smart tagging of pages is the best solution. That way only the
>> needed cache is cleared.
>>
>> Is it up to the developer to decide how to tag pages, or should there be
>> some internal method?
>> For example, if blog_example renders blog with UID 56, it should tag the
>> page tx_blogexample_blog_56 - or something like it?
>>
> 
> I do also think that during rendering every cache-entry should be tagged
> with all affected record-ids. That would enable the system to flush all
> affected caches when a record is changed (TCE-Main can do that). As an
> example the flushing of cache entries where a tt_news record is shown or
> a menu shows the title of page will work very easy. Ts-Config
> TCEMAIN.clearCacheCmd would become obsolete (it never was a smart solution).
> 
> Problem: if you use something like foldout menus and change a page on
> first or second level many page caches will be flushed.
> 
> Additionally extension developers would need an api to set such cache
> tags for USER-plugings from inside the extension because the core would
> tag the cache-entry only with tt_content_xxx.
> 
> The second problem is clearing the cache when new records are created
> (like tt_news). Maybe a smart tag based solution can be found too so an
> extension author can configure to clear the cache when new records of
> type xxx are createt in pid 1,2,3.
> 
> Maybe the tags could look like this:
> - page_123_new_tx_blogexample_blog :: flush if new blog on uid 123
> - page_123_new_record :: flush if any new record on pid 123
> - new_tx_blogexample_blog :: flush if any new blog
> - tx_blogexample_blog_123 :: flush if blog 123 is edited
> 
> I know that will end up having an enormouns amount of cache tage but i
> hope it will be simple an flexible at the same time. Maybe some of you
> can say weather or not the caching system can handle so many tags.
> 
> Regards, Martin
> 
>