Upfront - thanks for your time watching - and the friendly comments.

> I asked if it would be available in a v15R version before v16. Answer was 
> it’s not ready yet. They had hoped it would be done and ready to be released 
> in v16.0, but they have found a few issues that need to be fixed. So no new 
> v16 cache system in v15R versions and probably not in v16.0. But it will be 
> released some time during v16’s life.

Sorry, it seems I was not clear on this point.
The engine for the new cache manager is done. It was started last Xmas, tested 
intensively and is even already in production usage in some internal systems.
It was NOT ready for 4D v15 R5 through, as reminder:
Every 3 month, usually around the time we  publish a final R-Release, we fork 
the next one.
This means, we take the latest version of our internal source (including all 
features and bug fixes done at that time) and start to REMOVE features. Every 
feature not fully tested is removed (=delayed for a following version).

R5 was forked end of May - at that time we did not finished all testing for the 
cache manager. As the cache manager is a very important part of the database 
server, we had a very long testing planed.

So, it is not in R5. But it will be in v16.

In v16 the cache manager will run in fully automatic mode. Only thing you can 
set/modify is cache size, similar as in current versions.
What's not in v16.x, is a set of features to fine tune the cache usage, to give 
different priorities to specific tables or index, which will improve 
performance even more for very large databases. And this will come with a 
following v16 R Release (development is finished, testing already started, but 
will need more time).

Thomas


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