[TYPO3-english] TYPO3 6.x caches and performance best practices for productive site

[Domi]

Hey Dmitry,

I read your articles back in that time already, there are very helpful. 
I done everything already on the server side, the page in cached state 
is very fast and the cache expires are all set.

My concern is currently, that if the caches are cleared, I have such 
huge processing till the first response is coming from my index.php. And 
how I can handle it, that crawlers and visitors will never see the page 
uncached beside the editor itself.

There are several caching mechanism with the new cf_cache* and old 
cache_* tables in the database. I would like to know some more detailed 
information how to take care of them. and how I can optimize their behavior.

Which cache is actually getting cleared if I press cache clear button? 
And when does it come to the time I have to truncate cache tables?

Regards,

Dominic