MFE and PWA

[Ketec]

PWA / ServiceWorkers for cache and update management are increasingly common with many advantages.

Micro frontends with separately deployable and isolated modules are equally impactful.

But both together become suddenly quite a mess.
You can easily do the shell/host - and cache/update anything changed there - and even serve it as a PWA. But remotes are essentially uncovered.

Dynamic remotes are unknown during build time - their files are unknown and they do not get a unique hash for change detection.
Remotes may load additional dependencies.

Browser caching of files and assets is extremely unreliable. But you can't use service worker for remote projects either - they are only served through shell.

And the second major issue is lack of update notifications - since the worker is not aware that a new version of a remote is available.

How would you approach this issue?