To broadcast updates, you just need to add a broadcastUpdate.BroadcastUpdatePlugin to your strategy options. workbox-precaching creates cache entries with URLs that uniquely correspond to the contents, so it will never overwrite existing cache entries. BroadcastUpdatePlugin detects when a previously cached URL has been overwritten with new contents. The BroadcastUpdatePlugin can't be used to broadcast information about workbox-precaching's updates. Research has shown that feedback is more effective than one on one tutoring, reduced class sizes. WHAT THE RESEARCH SAYS The Education Endowment Foundation discovered that feedback is the most effective teaching practice, equivalent to 8 additional months of class time per year. Workbox uses header values instead of a byte-for-byte comparison of response bodies to be more efficient, in particular for potentially large responses You will be prompted to choose Kaizena Shortcut or the new Kaizena. ![]() # How are updates determined?Ĭertain headers of the cached and new Response objects are compared, and if any of the headers have different values, it's considered an update.īy default, the Content-Length, ETag, and Last-Modified headers are compared. Window Clients can listen for updates and take appropriate action, like automatically displaying a message to the user letting them know that updates are available. Whenever the "revalidate" step of that strategy retrieves a response from the network that differs from what was previously cached, this module will send a message (via postMessage()) to all Window Clients within scope of the current service worker. This is most commonly used along with the StaleWhileRevalidate strategy. The workbox-broadcast-update package provides a standard way of notifying Window Clients that a cached response has been updated. ![]() When responding to requests with cached entries, while being fast, it comes with a tradeoff that users may end up seeing stale data. ![]() Review the API reference for workbox-broadcast-update.
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