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Node.js streams: Add forkpoint for CacheComponents#92444

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Apr 10, 2026
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Node.js streams: Add forkpoint for CacheComponents#92444
timneutkens merged 6 commits into
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04-07-add_forkpoint_for_dev_cachecomponents_rsc

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@timneutkens timneutkens commented Apr 7, 2026 •
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Building on top of the changes in #92252. This PR implements similar fork points for the path when cacheComponents is enabled. Both the development and production path are implemented.

@nextjs-bot nextjs-bot added created-by: Turbopack team PRs by the Turbopack team. type: next labels Apr 7, 2026
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@timneutkens timneutkens changed the base branch from 03-27-node.js_streams_fork_points to graphite-base/92444 April 7, 2026 10:42
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Stats from current PR

🔴 1 regression

Metric Canary PR Change Trend
node_modules Size 491 MB 492 MB 🔴 +835 kB (+0%) █████
📊 All Metrics
📖 Metrics Glossary

Dev Server Metrics:

  • Listen = TCP port starts accepting connections
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  • Cold = Fresh build (no cache)
  • Warm = With cached build artifacts

Build Metrics:

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  • Cached = With existing .next directory

Change Thresholds:

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  • Size: Changes < 1KB AND < 1% are insignificant
  • All other changes are flagged to catch regressions

⚡ Dev Server

Metric Canary PR Change Trend
Cold (Listen) 456ms 456ms ✓ ▁█▅▅▅
Cold (Ready in log) 447ms 445ms ✓ ▁▂▅▇▄
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📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

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Warm (Ready in log) 439ms 438ms ✓ ▁▂▅▁▂
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⚡ Production Builds

Metric Canary PR Change Trend
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Cached Build 3.990s 3.930s ✓ ▄███▄
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 14.380s 14.482s ✓ ▁▂▅▂▂
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📝 Changed Files (8 files)

Files with changes:

  • app-page-exp..ntime.dev.js
  • app-page-exp..time.prod.js
  • app-page-tur..ntime.dev.js
  • app-page-tur..time.prod.js
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📎 Tarball URL 
https://vercel-packages.vercel.app/next/commits/345a2ff36c26e79324e6f55af4a38fab467b2561/next

@timneutkens timneutkens force-pushed the 04-07-add_forkpoint_for_dev_cachecomponents_rsc branch from e6b301b to 76fa6b4 Compare April 7, 2026 12:30
@timneutkens timneutkens changed the base branch from graphite-base/92444 to 03-27-node.js_streams_fork_points April 7, 2026 12:30
@timneutkens timneutkens changed the title Add forkpoint for dev CacheComponents RSC Node.js streams: Add forkpoint for CacheComponents Apr 7, 2026
@timneutkens timneutkens mentioned this pull request Apr 7, 2026
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@timneutkens timneutkens marked this pull request as ready for review April 7, 2026 14:25
@timneutkens timneutkens requested a review from gnoff April 7, 2026 14:25
@timneutkens timneutkens force-pushed the 03-27-node.js_streams_fork_points branch from 7e19bfc to 9260c86 Compare April 7, 2026 19:07
@timneutkens timneutkens force-pushed the 04-07-add_forkpoint_for_dev_cachecomponents_rsc branch from 8342c74 to 8da5f1b Compare April 7, 2026 19:07
This was referenced Apr 7, 2026
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@timneutkens timneutkens force-pushed the 03-27-node.js_streams_fork_points branch from 9260c86 to 7f98bbe Compare April 8, 2026 10:34
@timneutkens timneutkens force-pushed the 04-07-add_forkpoint_for_dev_cachecomponents_rsc branch from 8da5f1b to 2d8fcec Compare April 8, 2026 10:34
This was referenced Apr 8, 2026
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Base automatically changed from 03-27-node.js_streams_fork_points to canary April 8, 2026 17:45
@timneutkens timneutkens force-pushed the 04-07-add_forkpoint_for_dev_cachecomponents_rsc branch from 2d8fcec to fc17d89 Compare April 8, 2026 17:50
@timneutkens timneutkens mentioned this pull request Apr 8, 2026
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@timneutkens timneutkens force-pushed the 04-07-add_forkpoint_for_dev_cachecomponents_rsc branch from fc17d89 to 345a2ff Compare April 9, 2026 11:17
@timneutkens timneutkens enabled auto-merge (squash) April 10, 2026 11:52
@timneutkens timneutkens merged commit a9a8e27 into canary Apr 10, 2026
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@timneutkens timneutkens deleted the 04-07-add_forkpoint_for_dev_cachecomponents_rsc branch April 10, 2026 12:02
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