I have a simple Service Worker implementation like this:
var CACHE_NAME = "app-cache-v1";
var urlsToCache = ["./style/main.css", "./app.ts.js"];
self.addEventListener("install", function(event) {
event.waitUntil(
caches.open(CACHE_NAME).then(function(cache) {
return cache.addAll(urlsToCache);
})
);
});
self.addEventListener("activate", function(event) {
event.waitUntil(
caches.keys().then(function(cacheNames) {
return Promise.all(
cacheNames.map(function(cacheName) {
return caches.delete(cacheName);
})
);
})
);
});
self.addEventListener("fetch", function(event) {
event.respondWith(
fetch(event.request).catch(function() {
return caches.match(event.request);
})
);
});
My goal is to cache all resources except the two files indicated in the urlsToCache variable, these two files should ALWAYS be requested from the network.. How can i achieve this? How can I then verify that it is actually so?
You can check the url of the request in fetch event handler before deciding what caching strategy to use:
self.addEventListener("fetch", function(event) {
const url = new URL(event.request.clone().url);
if (urlsToCache.indexOf(url.pathname) !== -1) { // check if current url exists in your array
event.respondWith(
// without cacheing
);
} else {
event.respondWith(
// with cacheing
);
}