Keep in memory cache for longer and possibly as long as needed

[asif-mahmud]

From the documentation i saw this settings - jedi.settings.call_signatures_validity. Does it control how long the in memory cache stays alive ? if so, is it possible to keep the in memory cache alive for as long as needed. I mean, as long as a project is being worked on, jedi should keep the symbols in memory for faster completion.

[davidhalter]

No that's not it. This cache is a very bad version of a cache and does not really help with anything more than call signatures (and even there it might be buggy, especially if you use a high number).

For caching, this is the issue: #1059