Unexpected Caching after Next.js 15 Upgrade

[wei]

Steps to reproduce:

1. I first went to https://socialify.git.ci after Next.js 15 upgrade ♻️ Full migration from app router PLUS next15/react19 #450 and saw the version number in the footer has been updated to v2.17.0 which is working as expected
2. Subsequently, I deployed more new versions
3. After refreshing the page, the footer is still showing the old 2.17.0 version where it should show 2.18.1.

I noticed the home page and possibly other pages now have these headers appended:

cache-control: s-maxage=31536000
x-nextjs-cache: HIT
x-nextjs-prerender: 1
x-nextjs-stale-time: 4294967294

For some additional context, our Socialify next.js server currently runs behind Cloudflare CDN. By specifying s-maxage=31536000, these pages are instructing CDN nodes like Cloudflare to cache the page for a year. I don't believe that's the desired behavior.

@KemingHe when you have a moment - could you help look into this issue and help us understand the root cause and make recommendations? TY!