PHP Preloading is coming in 7.4

[chrisblakley]

In PHP 7.4, we'll be able to preload server-side files to save some compiling time.

https://stitcher.io/blog/new-in-php-74#preloading-rfc

Not sure if we'll have to do anything specifically in Nebula to use this or if it'll just happen, but keep an eye out for it.

[chrisblakley]

More info from the same source:

• https://stitcher.io/blog/preloading-in-php-74
• Benchmarks: https://stitcher.io/blog/php-preload-benchmarks

[chrisblakley]

Since this is an emerging PHP features issue, cross-linking #1992 as it does contain some other upcoming PHP 7.4 features.

[chrisblakley]

This isn't something that Nebula can (or would) bundle, but here is a good starter reference for how to preload WordPress core files with PHP 7.4 opcache preloading: https://gist.github.com/fedek6/4dc1f34ba363659fab75cf72e1d6fbbb

Where to put that file:

Important to note that you'll need to restart the server every time you want to reload the in-memory files– essentially running something like sudo systemctl restart apache2 or sudo systemctl restart php7.4-fpm.service to refresh cached files.

[chrisblakley]

Closing this at this point since it is not Nebula-specific. I didn't finish setting it up on my server because there are multiple projects that include non-WP sites and also this being a development server it would require dumping the cache often. I also don't think that Nebula is large enough to make a much bigger dent than opcache alone.