Description
OPcache currently supports excluding files using opcache.blacklist_filename. This works well when the number of files to exclude is small.
However, in a multi-tenant application, the opposite can be true. There may be a large number of tenant-specific files that should not be cached, while only a small set of common application files should be cached.
For example, instead of maintaining:
/var/www/tenant-a/*
/var/www/tenant-b/*
/var/www/tenant-c/*
...
it would be useful to define the files that are allowed to be cached:
opcache.whitelist_filename=/path/to/whitelist
with:
/var/www/app/src/*
/var/www/app/vendor/*
The behavior would simply be the inverse of the blacklist: when a whitelist is configured, only matching files are cached.
I think blacklist and whitelist should be mutually exclusive, with PHP-FPM failing at startup if both are configured.
This would be particularly useful for applications where the set of files that should be cached is small and well-defined, while the set of files to exclude is large or dynamic.
I'm happy to implement this and open a PR if this proposal makes sense.
Description
OPcache currently supports excluding files using opcache.blacklist_filename. This works well when the number of files to exclude is small.
However, in a multi-tenant application, the opposite can be true. There may be a large number of tenant-specific files that should not be cached, while only a small set of common application files should be cached.
For example, instead of maintaining:
/var/www/tenant-a/*
/var/www/tenant-b/*
/var/www/tenant-c/*
...
it would be useful to define the files that are allowed to be cached:
opcache.whitelist_filename=/path/to/whitelist
with:
/var/www/app/src/*
/var/www/app/vendor/*
The behavior would simply be the inverse of the blacklist: when a whitelist is configured, only matching files are cached.
I think blacklist and whitelist should be mutually exclusive, with PHP-FPM failing at startup if both are configured.
This would be particularly useful for applications where the set of files that should be cached is small and well-defined, while the set of files to exclude is large or dynamic.
I'm happy to implement this and open a PR if this proposal makes sense.