i'd say websockets, but since nextjs doesnt support them (still) you can use streams/sse

you can try https://www.npmjs.com/package/@upstash/realtime to emit cache stuff to client immediately

still you'd need to write cache logic

next.js does support websockets

the way you are deploying your application probably does not

sure it does if you are up to setup custom server and lose most of nextjs features

and what are those next.js features that you lose :D

as per docs

I have sat up a SSE system.

My idea was to set up a caching system and using SSE to update the cache in client.

I don´t want to build something that make the client able to send to server cachce (never trust the client)..

Would you say I am on the right path?