Re: [Exist-development] [Exist-open] Performance of concurrent read queries.

[Wolfgang M. <wol...@ex...>]

> Would 'normal' lock mechanism be suitable here? Or any restrictions that
> do not allow to use it?

I'm not yet sure of the consequences. I do believe without further
exploration that we could switch to a multi-read/exclusive write lock
mechanism in some places, though this would require some changes to
the cache management (which could - in return - result in new locks
being introduced ;-). The goal, let me repeat, would be to speed up
non index-assisted, non-optimized access to the DOM. Index-assisted
access itself is pretty fast and does allow for good concurrency.

But we have to be very careful here since the architecture is complex:
you have to consider transactional integrity, journalling, caching and
other aspects. If we change anything, we have to proceed carefully and
in very small steps. Stability is always my top priority.

Wolfgang