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Remove legacy PPR postpone cluster#90726

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devjiwonchoi merged 2 commits intocanaryfrom
jiwon-2026-03-01/remove-postpone-cluster
Mar 4, 2026
Merged

Remove legacy PPR postpone cluster#90726
devjiwonchoi merged 2 commits intocanaryfrom
jiwon-2026-03-01/remove-postpone-cluster

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@devjiwonchoi devjiwonchoi commented Mar 1, 2026

Stacked on #90721

Verified deployment tests pass on CI: https://github.com/vercel/next.js/actions/runs/22541051404

@devjiwonchoi devjiwonchoi marked this pull request as ready for review March 1, 2026 14:08
@devjiwonchoi devjiwonchoi requested a review from unstubbable March 1, 2026 14:08
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@@ -725,46 +724,6 @@ async function createComponentTreeInternal(
}

const Component = MaybeComponent

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P1 Badge Keep force-dynamic routes on the dynamic prerender path

Removing the force-dynamic/cacheComponents early return here drops the only guaranteed signal that a dynamic = "force-dynamic" page must be treated as dynamic even when it does not read any dynamic APIs. In that case the server prerender can complete synchronously, serverIsDynamic stays false, and the build hits the invariant in app-render.tsx ("did not trigger the dynamic pathway") instead of producing output; a minimal static JSX page with dynamic = "force-dynamic" is enough to trigger this during static generation.

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force-dynamic is not allowed in Cache Components. It was previously meant for legacy PPR.

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@codex review based on my comment again.

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Codex Review: Didn't find any major issues. You're on a roll.

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nextjs-bot commented Mar 1, 2026

Stats from current PR

🟢 1 improvement

Metric Canary PR Change Trend
node_modules Size 475 MB 475 MB 🟢 212 kB (0%) ▁▁▁▁▁
📊 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) 456ms 456ms ▁▁▁▁▁
Cold (Ready in log) 438ms 438ms ▁▁▁▁▁
Cold (First Request) 1.260s 1.258s ▃▃▄▃▁
Warm (Listen) 456ms 456ms ▁▁▁▁▁
Warm (Ready in log) 447ms 442ms ▁▁▁▁▁
Warm (First Request) 352ms 354ms ▁▁▁▁▁
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 456ms 456ms ▁█▁▁▁
Cold (Ready in log) 438ms 438ms ▃█▃▃▂
Cold (First Request) 1.929s 1.942s ▁█▁▂▁
Warm (Listen) 456ms 456ms ▁█▁▁▁
Warm (Ready in log) 437ms 437ms ▃█▃▄▃
Warm (First Request) 1.961s 1.946s ▁█▂▃▂

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 3.883s 3.869s ▁▁▁▁▁
Cached Build 3.847s 3.860s ▁▁▁▁▁
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 14.056s 14.083s ▁█▁▁▁
Cached Build 14.148s 14.124s ▁█▁▁▁
node_modules Size 475 MB 475 MB 🟢 212 kB (0%) ▁▁▁▁▁
📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles: **401 kB** → **401 kB** ✅ -337 B

80 files with content-based hashes (individual files not comparable between builds)

Server

Middleware
Canary PR Change
middleware-b..fest.js gzip 768 B 767 B
Total 768 B 767 B ✅ -1 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 450 B 452 B
Total 450 B 452 B ⚠️ +2 B

📦 Webpack

Client

Main Bundles
Canary PR Change
5528-HASH.js gzip 5.54 kB N/A -
6280-HASH.js gzip 59.4 kB N/A -
6335.HASH.js gzip 169 B N/A -
912-HASH.js gzip 4.59 kB N/A -
e8aec2e4-HASH.js gzip 62.6 kB N/A -
framework-HASH.js gzip 59.7 kB 59.7 kB
main-app-HASH.js gzip 255 B 253 B
main-HASH.js gzip 39.1 kB 39.1 kB
webpack-HASH.js gzip 1.68 kB 1.68 kB
262-HASH.js gzip N/A 4.59 kB -
2889.HASH.js gzip N/A 169 B -
5602-HASH.js gzip N/A 5.55 kB -
6948ada0-HASH.js gzip N/A 62.6 kB -
9544-HASH.js gzip N/A 60.2 kB -
Total 233 kB 234 kB ⚠️ +732 B
Polyfills
Canary PR Change
polyfills-HASH.js gzip 39.4 kB 39.4 kB
Total 39.4 kB 39.4 kB
Pages
Canary PR Change
_app-HASH.js gzip 194 B 194 B
_error-HASH.js gzip 183 B 180 B 🟢 3 B (-2%)
css-HASH.js gzip 331 B 330 B
dynamic-HASH.js gzip 1.81 kB 1.81 kB
edge-ssr-HASH.js gzip 256 B 256 B
head-HASH.js gzip 351 B 352 B
hooks-HASH.js gzip 384 B 383 B
image-HASH.js gzip 580 B 581 B
index-HASH.js gzip 260 B 260 B
link-HASH.js gzip 2.51 kB 2.51 kB
routerDirect..HASH.js gzip 320 B 319 B
script-HASH.js gzip 386 B 386 B
withRouter-HASH.js gzip 315 B 315 B
1afbb74e6ecf..834.css gzip 106 B 106 B
Total 7.98 kB 7.98 kB ✅ -1 B

Server

Edge SSR
Canary PR Change
edge-ssr.js gzip 125 kB 125 kB
page.js gzip 254 kB 254 kB
Total 379 kB 379 kB ✅ -34 B
Middleware
Canary PR Change
middleware-b..fest.js gzip 617 B 616 B
middleware-r..fest.js gzip 156 B 155 B
middleware.js gzip 43.9 kB 43.5 kB 🟢 462 B (-1%)
edge-runtime..pack.js gzip 842 B 842 B
Total 45.5 kB 45.1 kB ✅ -464 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 715 B 718 B
Total 715 B 718 B ⚠️ +3 B
Build Cache
Canary PR Change
0.pack gzip 4.04 MB 4.04 MB 🔴 +4.27 kB (+0%)
index.pack gzip 104 kB 104 kB
index.pack.old gzip 103 kB 103 kB
Total 4.25 MB 4.25 MB ⚠️ +4.87 kB

🔄 Shared (bundler-independent)

Runtimes
Canary PR Change
app-page-exp...dev.js gzip 322 kB 321 kB
app-page-exp..prod.js gzip 171 kB 170 kB
app-page-tur...dev.js gzip 321 kB 321 kB
app-page-tur..prod.js gzip 170 kB 170 kB
app-page-tur...dev.js gzip 318 kB 318 kB
app-page-tur..prod.js gzip 169 kB 168 kB
app-page.run...dev.js gzip 318 kB 318 kB
app-page.run..prod.js gzip 169 kB 168 kB
app-route-ex...dev.js gzip 70.5 kB 70.3 kB
app-route-ex..prod.js gzip 48.8 kB 48.6 kB
app-route-tu...dev.js gzip 70.6 kB 70.4 kB
app-route-tu..prod.js gzip 48.9 kB 48.7 kB
app-route-tu...dev.js gzip 70.1 kB 69.9 kB
app-route-tu..prod.js gzip 48.6 kB 48.4 kB
app-route.ru...dev.js gzip 70.1 kB 69.9 kB
app-route.ru..prod.js gzip 48.6 kB 48.4 kB
dist_client_...dev.js gzip 324 B 324 B
dist_client_...dev.js gzip 326 B 326 B
dist_client_...dev.js gzip 318 B 318 B
dist_client_...dev.js gzip 317 B 317 B
pages-api-tu...dev.js gzip 43.2 kB 43.2 kB
pages-api-tu..prod.js gzip 32.9 kB 32.9 kB
pages-api.ru...dev.js gzip 43.2 kB 43.2 kB
pages-api.ru..prod.js gzip 32.9 kB 32.9 kB
pages-turbo....dev.js gzip 52.6 kB 52.6 kB
pages-turbo...prod.js gzip 38.5 kB 38.5 kB
pages.runtim...dev.js gzip 52.6 kB 52.6 kB
pages.runtim..prod.js gzip 38.5 kB 38.5 kB
server.runti..prod.js gzip 61.9 kB 61.8 kB
Total 2.83 MB 2.83 MB ✅ -4.45 kB
📝 Changed Files (17 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
  • server.runtime.prod.js
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📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/5841c70db390f01d00f654dbf6984ae1803a04ca/next

@devjiwonchoi devjiwonchoi force-pushed the jiwon-2026-03-01/remove-prerender-ppr branch from 7b1e778 to bea5fa7 Compare March 4, 2026 16:04
Base automatically changed from jiwon-2026-03-01/remove-prerender-ppr to canary March 4, 2026 16:46
Delete `Postpone` component, `postponeWithTracking`, `isDynamicPostpone`,
and related helpers from dynamic-rendering.ts. Remove the broken
force-dynamic postpone block from create-component-tree.tsx. Delete
rsc/postpone.ts and its entry-base.ts export. Clean up consumer imports
in unstable-rethrow.server.ts and is-dynamic-usage-error.ts.
@devjiwonchoi devjiwonchoi force-pushed the jiwon-2026-03-01/remove-postpone-cluster branch from b407425 to 0c6c221 Compare March 4, 2026 17:11
@devjiwonchoi devjiwonchoi enabled auto-merge (squash) March 4, 2026 17:12
devjiwonchoi added a commit that referenced this pull request Mar 4, 2026
Stacked on #90726

Migrate legacy PPR tests to Cache Components
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stale comment

}

/**
* This is a bit of a hack to allow us to abort a render using a Postpone instance instead of an Error which changes React's
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stale comment

@devjiwonchoi devjiwonchoi disabled auto-merge March 4, 2026 17:32
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@codex review

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Reviewed commit: 5841c70db3

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@devjiwonchoi devjiwonchoi requested a review from unstubbable March 4, 2026 18:40
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💡 Codex Review

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Reviewed commit: 5841c70db3

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@devjiwonchoi devjiwonchoi merged commit b4013ed into canary Mar 4, 2026
158 checks passed
@devjiwonchoi devjiwonchoi deleted the jiwon-2026-03-01/remove-postpone-cluster branch March 4, 2026 19:01
unstubbable added a commit that referenced this pull request Mar 5, 2026
sokra pushed a commit that referenced this pull request Mar 6, 2026
Stacked on #90726

Migrate legacy PPR tests to Cache Components
sokra pushed a commit that referenced this pull request Mar 6, 2026
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