> One such performance improvement involved moving the logic to check a user’s enabled features into a background thread that refreshed on an interval rather th

> One such performance improvement involved moving the logic to check a user’s enabled features into a background thread that refreshed on an interval rather than checking their enablement while the request was being processed. This type of thing is why PHP's shared-nothing model is vastly undervalued IMO. Does PHP have the ability to use threads if you really need it? Yes. Are they generally a PITA to use? Yes. Is this a problem for the vast, vast, vast majority of projects? Not in the slightest. Having a separate invocation of the runtime for each request is a feature, not a failing.