[kaba0]

Do you even know what a frontend/client is vs a backend?

The frontend is anything but java (the website uses javascript, they have mobile apps, not sure what they are written in, but besides android having a few necessary wrappers, these are also not java applications).

You don’t see the backend and they do different things between different services so not much point in comparing them - that’s a huge, complex, partially cached-at-your-ISP even network infrastructure.

Besides, Java itself is very fast and is itself no reason for an applications’ (especially network-related) bad performance. It literally runs like half of the internet, with basically every other top 100 IT companies having business-critical infrastructure dependent on it.

[oldnet]

BE doesn't need constant info about user if BE would be correctly written.

I never saw BE which sends so much requests to FE for user info. Someone just has no idea how to use Java without making CPU wild.