I noticed that cached files served from a service worker take way to much time according to the Chrome devTools Network tab which shows
Size=(from ServiceWorker) and
Time=139ms for a small image file (60×60).
The fetch handler withing my service worker is logging a cache hit for this image file so I am sure that the file was served from the cache not from the network.
Time value displayed in the chrome devTools wrong or does it really take 139ms to serve a cache file? The whole point of caching files is better user experience and everything something like 2ms is way too much for a cache hit in my eyes.