Bypass Service-Worker caching

Question

I have a progressive web-app, which speaks to an API. The calls to this api get cached by a service worker, which works great.

But now, I want to add a reload-button, which ideally forces the service worker to try to bypass the cache and update it if successful, also it should not return the cached result if a connection could not be made.

I am a bit unsure how to solve this. I am using the sw-toolbox.

Answer 1

All requests go through the fetch callback which receives a request object. Thus, before returning a cached response you can look for an additional header parameter (you need to include it into your request to API) to skip the logic returning cached response.