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Separate App Page render and prerender pipelines - #96659

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ztanner merged 1 commit into
ztanner/explicit-work-store-execution-modefrom
ztanner/separate-app-page-render-pipelines
Aug 5, 2026
Merged

ztanner merged 1 commit into
ztanner/explicit-work-store-execution-modefrom
ztanner/separate-app-page-render-pipelines

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@ztanner

@ztanner ztanner commented Aug 4, 2026 •

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Summary

App Page rendering currently shares a single implementation that uses the Work Store execution mode to choose between the request and prerender pipelines.

This change:

  • Extracts mode-neutral App Page preparation into a shared step.
  • Gives request rendering and prerendering separate top-level implementations.
  • Moves Work Store creation into the corresponding entrypoint.
  • Makes each path call renderToStream or prerenderToStream directly, removing the execution-mode dispatch between them.

This moves the rendering decision to the App Page boundary and creates a clearer path toward removing execution mode from the Work Store entirely.

@github-actions

github-actions Bot commented Aug 4, 2026 •

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Stats from current PR

🔴 3 regressions, 1 improvement

Metric Canary PR Change Trend
node_modules Size 552 MB 552 MB 🔴 +169 kB (+0%) ▁▁▁▁▁
Turbo Build Time 5.767s 6.150s 🔴 +383ms (+7%) ▁▅▁▂▄
Webpack Build Time 24.010s 24.812s 🔴 +802ms (+3%) ▃▅▅▃▄
Webpack Warm (First Request) 3.488s 3.330s 🟢 158ms (-5%) ▁▄▃▂▃
📊 All Metrics
📖 Metrics Glossary

Dev Server Metrics:

  • Listen = TCP port starts accepting connections
  • First Request = HTTP server returns successful response
  • Cold = Fresh build (no cache)
  • Warm = With cached build artifacts

Build Metrics:

  • Fresh = Clean build (no .next directory)
  • Cached = With existing .next directory

Change Thresholds:

  • Time: Changes < 50ms AND < 10%, OR < 2% are insignificant
  • Size: Changes < 1KB AND < 1% are insignificant
  • All other changes are flagged to catch regressions

⚡ Dev Server

Metric Canary PR Change Trend
Cold (Listen) 813ms 812ms ✓ ▂▂▁▂▂
Cold (Ready in log) 793ms 803ms ✓ ▂▃▁▁▂
Cold (First Request) 1.315s 1.336s ✓ ▂▃▁▁▃
Warm (Listen) 812ms 812ms ✓ ▂▂▁▂▂
Warm (Ready in log) 784ms 795ms ✓ ▁▂▁▁▂
Warm (First Request) 1.289s 1.319s ✓ ▁▃▁▁▃
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 814ms 813ms ✓ ▄▅▅▄▅
Cold (Ready in log) 795ms 786ms ✓ ▂▄▄▂▃
Cold (First Request) 3.413s 3.324s ✓ ▂▃▃▂▃
Warm (Listen) 813ms 813ms ✓ ▄▅▅▅▄
Warm (Ready in log) 794ms 788ms ✓ ▂▅▄▃▂
Warm (First Request) 3.488s 3.330s 🟢 158ms (-5%) ▁▄▃▂▃

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 5.767s 6.150s 🔴 +383ms (+7%) ▁▅▁▂▄
Cached Build 2.916s 3.003s ✓ ▁▂▁▁▄
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 24.010s 24.812s 🔴 +802ms (+3%) ▃▅▅▃▄
Cached Build 24.628s 24.243s ✓ ▃▄▅▂▃
node_modules Size 552 MB 552 MB 🔴 +169 kB (+0%) ▁▁▁▁▁
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Build Cache
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📝 Changed Files (20 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
  • app-page-tur..ntime.dev.js
  • app-page-tur..time.prod.js
  • app-page.runtime.dev.js
  • app-page.runtime.prod.js
  • app-route-ex..ntime.dev.js
  • app-route-ex..time.prod.js
  • app-route-tu..ntime.dev.js
  • app-route-tu..time.prod.js
  • app-route-tu..ntime.dev.js
  • app-route-tu..time.prod.js
  • app-route.runtime.dev.js
  • app-route.ru..time.prod.js
  • use-cache-pr..ntime.dev.js
  • use-cache-pr..ntime.dev.js
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📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/71f1fc90c43c3ffc26043ea1955d7576bdf5a85c/next

Commit: 71f1fc9

@github-actions

github-actions Bot commented Aug 4, 2026 •

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Tests Passed

Commit: 71f1fc9

@ztanner
ztanner marked this pull request as ready for review August 4, 2026 21:14
@ztanner
ztanner force-pushed the ztanner/separate-app-page-render-pipelines branch from 6068371 to da1655d Compare August 5, 2026 00:16
@ztanner
ztanner force-pushed the ztanner/separate-app-page-render-pipelines branch from da1655d to e6f8e0a Compare August 5, 2026 00:28
@ztanner
ztanner force-pushed the ztanner/separate-app-page-render-pipelines branch from e6f8e0a to 71f1fc9 Compare August 5, 2026 00:55
@ztanner
ztanner merged commit 2a2d32e into canary Aug 5, 2026
142 of 146 checks passed
@ztanner
ztanner deleted the ztanner/separate-app-page-render-pipelines branch August 5, 2026 12:51
m-kawafuji pushed a commit to m-kawafuji/next.js that referenced this pull request Aug 8, 2026
## Summary

App Page rendering currently shares a single implementation that uses
the Work Store execution mode to choose between the request and
prerender pipelines.

This change:

- Extracts mode-neutral App Page preparation into a shared step.
- Gives request rendering and prerendering separate top-level
implementations.
- Moves Work Store creation into the corresponding entrypoint.
- Makes each path call `renderToStream` or `prerenderToStream` directly,
removing the execution-mode dispatch between them.

This moves the rendering decision to the App Page boundary and creates a
clearer path toward removing execution mode from the Work Store
entirely.
@github-actions github-actions Bot added the locked label Sep 6, 2026
@github-actions github-actions Bot locked as resolved and limited conversation to collaborators Sep 6, 2026
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