ServiceWorker Cache Gecko Data Flows

gistfile1.js

//
// Example uses of a ServiceWorker Cache to discuss how data flows
// within gecko.  See comments below
//
addEventListener('fetch', function(event) {
  event.respondWith(
    event.default().then(function(response) {
      caches.get('content').then(function(cache) {
        var cacheResponse = response.clone();
        // Transfers data from network->parent process->disk
        cache.put(request, cacheResponse).then(function(putResponse) {
          // Transfers data from disk->parent process->child process
          putResponse.body.asArrayBuffer();
        });
        // Transfers data from network->parent process->child process
        var localResponse = response.clone();
        localResponse.body.asArrayBuffer();
        // Transfers data from network->parent process->child process
        return response;
      })
    })
  );
}