CloudFlareWebWorker PoC of the cache

CloudFlareWebWorker.js

addEventListener('fetch', event => {
    event.respondWith(intercept(event.request));
});

async function intercept(request) {
    // Define a "constant" key so I always would get the same response from my cache (just for PoC purpose).
    const myRequest = 'http://www.myconstantvalue.com';
    
    try{
        const cache = getCache();
        
        // Fetch request from cache
        const response = await cache.match(myRequest, { ignoreMethod : true });
            
        // If response found in cache, return
        if(response){
          return response;
        }
        
        // Response not yet in cache, let's define a new response with a header with long expire date
        // This should ensure that we have a response cached for a long time (for this PoC)
        const ops = { 
          headers :  {
           'Expires' : 'Wed Jan 01 2020 01:01:01 GMT'
        };
        
        const newResponse = new Response('Hello world from cache : ' + Date.now(), ops);
            
        // Put new response in cache
        await cache.put(myRequest, newResponse.clone());
            
        // Return new response
        return newResponse;
    
    } catch(e){
      console.error(e);
      return new Response(e.message + ' - ' + e.stack);
    }

}

function getCache(){
  return caches.default;
}