Absolute HTTP(S) URL used as both the cache key and network location.
The same cryptosuite cipher key used to store the object.
When true, return undefined on a cache miss without fetching.
The decoded object, or undefined for a non-successful HTTP response.
Loads, decrypts, and decodes an object from the cache or its remote URL.
The Cache API is checked first. On a miss, the URL is fetched without credentials. Successful cache and network responses receive refreshed cache metadata in the background. A non-successful HTTP response resolves to
undefined.