There is no way to bypass loading of object cache

[jorbin]

Right now in wp_start_object_cache, the existence or non-existence of the object-cache.php dropin is the only way to signify if WordPress should load the object cache without messing around with globals in a way that is not completely reliable.

Some specific use cases:

• If you want to be able to conditionally test uncached requests
• If you are on a host that auto installs an object cache and you don't have access to the file system

Classifying as a bug since we have the ability to disable the advance-cache dropin and it was an oversite to only be able to disable that one.

Add a filter to allow disabling object cache

Trac ticket: https://core.trac.wordpress.org/ticket/53322

[jorbin]

In 51087:

Boostrap/Load: Add filter to allow disabling of object cache

In [37626] a filter was added to allow disabling the advanced cache dropin, but no similar filter was added for the object cache dropin. This corrects that oversight.

Fixes #53322.

[dlh]

This is so minor that I would feel bad opening a ticket about it, but object-cache.php is misspelled in the filter docs added in [51087], and Default true. is indented by two extra spaces relative to the line above it.

https://core.trac.wordpress.org/changeset/51087