Add caching to get_block_templates function

[spacedmonkey]

The function get_block_templates now calls the WP_Query for every call. This means that every time it requested, it can result in a query to the database. This function should have some level of caching to save duplicate queries on a page load.

[peterwilsoncc]

Is it worth working on #22176 during the 6.1 cycle to solve this for multiple functions rather than one by one?

It would be a heap more work but ultimately less effort than to keep adding caching to all the the functions making use of WP_Query.

[spacedmonkey]

@peterwilsoncc Great minds think alike.

I had the same thought. But I was thinking have a flag, that defaults to false for caching results. That way we can opt-in usage of WP_Query in core. That way we can roll it out slowly. For this ticket for example, it would simply mean, activating the flag.

Thoughts

[spacedmonkey]

This ticket is now invalid, now that #22176 has been merged.