[MapProxy] Suggested cache setup

[Benjamin Wragg]

Hi all,

I have another newbie question...sorry...I have to pre cache via seeding a few large areas total 30,000km2, from level 0-16, so that it can be used by some users offline who don't have internet access. From looking over the docs I can see the default way to store the cached images is on the file system. The other two options are mbtiles and couchdb.

mbtiles is out for me due to its not supporting any "remove_before" options. So this leaves me file or couchdb. 

Couchdb adds another bit of software I have to configure and update, the file system option just seems so easy. So my questions are:

At what point is it recommended to move to couchdb?
Is there a point where the filesystem becomes ineffective/slow and its recommended to start using couchdb? i.e is my above implementation of 30,000km2 from level 0-16 going to cope on the file system?
If you only have 1 mapproxy server accessing the cache and there isn't much speed difference, is there any benefit that comes from moving to couchdb?

Thanks,

Benjamin