Adapt DBSTATS for distinct Redis databases, fix #244

[davidbgk]

No description provided.

[yohanboniface]

has_distinct_redis_db seems overkill to me.
What I'd do:

• use DB for all keys expect document one
• test if DOCUMENT_STORE is RedisStore
• if yes, compute document key with ds._DB
• if no, do nothing

Am I missing something?

[davidbgk]

I don't think it's overkill (not sure if it's pertinent to put it in config vs. ds though) because if you want to have a consistent total and to handle the case of using the same Redis DB.

I was actually thinking about improving it a bit displaying the store (db) after the size. It would work easily with the size of the SQLite file for instance. Let's keep it as is and discuss on Monday :)

[davidbgk]

After discussion, DBSTATS is too confusing and will be completely removed.