Server requests and latency increased after upgrading from Next.js 15 to 16

[carlos-dubon]

After upgrading from Next.js 15 to Next.js 16, I noticed that the number of requests effectively doubled. This has resulted in increased server strain and higher response latency. It also seems to require more resources and therefore higher server costs $$$ (good for cloud services I guess?) compared to v15.

Server request patterns and performance should remain consistent (or improve) after upgrading.

The screenshot shows the ops/s after deploying v16 around 3:30 PM, I then proceeded to revert back my changes:

I am self-hosting Next.js, and upgrading will most likely increase our cloud bill $$$.

[icyJoseph]

Hi, do you have logs with what type of requests increased? is it possible to verify this on a local build? or a test/stage environment you may have?

[wyattjoh]

Hey👋🏻 ! Are you using any other experimental features with this application? While the number of requests will increase with our new prefetching model, the majority of those responses should be static and should all be smaller in size compared to our previous model.