You can use service workers to significantly reduce the amount of data your users need to request from your server, and as a result you can dramatically improve both the render and load times for your pages.

The usual uses cases for Service Workers is pre-caching; custom offline pages; saving pages for offline reading. What if we could use the Push API to introduce a subscription strategy based on content push and offline first?

Our current generation of frameworks makes off-main-thread architectures hard and diminishes its returns. UI frameworks are supposed to do UI work and therefore have the right to run on the UI thread. In reality, however, the work they are doing is a mixture of UI work and other related, but ultimately non-UI work.