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[test] Improve deployment skew test for Pages Router data routes#89038

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timneutkens merged 2 commits intocanaryfrom
mischnic/pages-deployment-skew-test
Jan 26, 2026
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[test] Improve deployment skew test for Pages Router data routes#89038
timneutkens merged 2 commits intocanaryfrom
mischnic/pages-deployment-skew-test

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@mischnic mischnic commented Jan 26, 2026 •
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Actually test the behavior by switching between two builds, as opposed to selectively blocking some routes.

@nextjs-bot nextjs-bot added created-by: Turbopack team PRs by the Turbopack team. tests labels Jan 26, 2026
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mischnic commented Jan 26, 2026 •
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@mischnic mischnic changed the title e2e test test: deployment skew for Pages Router data routes Jan 26, 2026
@mischnic mischnic marked this pull request as ready for review January 26, 2026 10:40
@mischnic mischnic mentioned this pull request Jan 26, 2026
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@mischnic mischnic changed the title test: deployment skew for Pages Router data routes [test] Deployment skew for Pages Router data routes Jan 26, 2026
@mischnic mischnic requested a review from a team January 26, 2026 10:42
@mischnic mischnic changed the title [test] Deployment skew for Pages Router data routes [test] Better test deployment skew for Pages Router data routes Jan 26, 2026
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@mischnic mischnic force-pushed the mischnic/pages-deployment-skew-test branch from f50ec09 to 152d38a Compare January 26, 2026 10:46
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@mischnic mischnic changed the title [test] Better test deployment skew for Pages Router data routes [test] Improve deployment skew test for Pages Router data routes Jan 26, 2026
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Stats from current PR

✅ No significant changes detected

📊 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 455ms ✓ ▁▁▁▁▁
Cold (Ready in log) 436ms 438ms ✓ ▁▁▁▂▂
Cold (First Request) 1.148s 1.171s ✓ ▃▃▁▄▃
Warm (Listen) 457ms 457ms ✓ ▁▁▁▁▁
Warm (Ready in log) 442ms 447ms ✓ ▁▁▁▁▁
Warm (First Request) 338ms 340ms ✓ ▁▁▁▁▁
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 455ms 455ms ✓ ▁▁▁▅▁
Cold (Ready in log) 440ms 439ms ✓ ▃▁▃▄▃
Cold (First Request) 1.840s 1.841s ✓ ▃▁▂▃▂
Warm (Listen) 456ms 457ms ✓ ▁▁▁▄▁
Warm (Ready in log) 439ms 439ms ✓ ▃▁▃▄▃
Warm (First Request) 1.849s 1.856s ✓ ▃▁▂▃▂

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 4.350s 4.305s ✓ ▁▁▁▁▁
Cached Build 4.293s 4.327s ✓ ▁▁▁▁▁
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 14.073s 14.072s ✓ ▃▁▁▃▁
Cached Build 14.252s 14.187s ✓ ▃▁▁▃▁
node_modules Size 461 MB 461 MB ✓ █████
📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles: **432 kB** → **432 kB** ✅ -42 B

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

Server

Middleware
Canary PR Change
middleware-b..fest.js gzip 764 B 759 B ✓
Total 764 B 759 B ✅ -5 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
2086.HASH.js gzip 169 B N/A -
2161-HASH.js gzip 5.47 kB N/A -
2747-HASH.js gzip 4.53 kB N/A -
4322-HASH.js gzip 52.7 kB N/A -
ec793fe8-HASH.js gzip 62.3 kB N/A -
framework-HASH.js gzip 59.8 kB 59.8 kB ✓
main-app-HASH.js gzip 251 B 253 B ✓
main-HASH.js gzip 38.7 kB 39.1 kB ✓
webpack-HASH.js gzip 1.68 kB 1.68 kB ✓
1596.HASH.js gzip N/A 169 B -
2658-HASH.js gzip N/A 52.4 kB -
6349-HASH.js gzip N/A 4.52 kB -
7019-HASH.js gzip N/A 5.49 kB -
b17a3386-HASH.js gzip N/A 62.3 kB -
Total 226 kB 226 kB ⚠️ +54 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 193 B ✓
_error-HASH.js gzip 182 B 182 B ✓
css-HASH.js gzip 336 B 335 B ✓
dynamic-HASH.js gzip 1.8 kB 1.8 kB ✓
edge-ssr-HASH.js gzip 256 B 256 B ✓
head-HASH.js gzip 352 B 349 B ✓
hooks-HASH.js gzip 385 B 384 B ✓
image-HASH.js gzip 580 B 580 B ✓
index-HASH.js gzip 259 B 258 B ✓
link-HASH.js gzip 2.5 kB 2.51 kB ✓
routerDirect..HASH.js gzip 319 B 317 B ✓
script-HASH.js gzip 385 B 387 B ✓
withRouter-HASH.js gzip 316 B 315 B ✓
1afbb74e6ecf..834.css gzip 106 B 106 B ✓
Total 7.97 kB 7.96 kB ✅ -8 B

Server

Edge SSR
Canary PR Change
edge-ssr.js gzip 126 kB 126 kB ✓
page.js gzip 245 kB 240 kB 🟢 4.75 kB (-2%)
Total 371 kB 366 kB ✅ -4.62 kB
Middleware
Canary PR Change
middleware-b..fest.js gzip 616 B 615 B ✓
middleware-r..fest.js gzip 155 B 156 B ✓
middleware.js gzip 33.1 kB 33.3 kB ✓
edge-runtime..pack.js gzip 842 B 842 B ✓
Total 34.8 kB 34.9 kB ⚠️ +154 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 736 B 738 B ✓
Total 736 B 738 B ⚠️ +2 B
Build Cache
Canary PR Change
0.pack gzip 3.71 MB 3.72 MB 🔴 +9.77 kB (+0%)
index.pack gzip 101 kB 103 kB 🔴 +1.48 kB (+1%)
index.pack.old gzip 102 kB 103 kB ✓
Total 3.92 MB 3.93 MB ⚠️ +11.8 kB

🔄 Shared (bundler-independent)

Runtimes
Canary PR Change
app-page-exp...dev.js gzip 307 kB 307 kB ✓
app-page-exp..prod.js gzip 163 kB 163 kB ✓
app-page-tur...dev.js gzip 306 kB 306 kB ✓
app-page-tur..prod.js gzip 163 kB 163 kB ✓
app-page-tur...dev.js gzip 303 kB 303 kB ✓
app-page-tur..prod.js gzip 161 kB 161 kB ✓
app-page.run...dev.js gzip 303 kB 303 kB ✓
app-page.run..prod.js gzip 161 kB 161 kB ✓
app-route-ex...dev.js gzip 70 kB 70 kB ✓
app-route-ex..prod.js gzip 48.6 kB 48.6 kB ✓
app-route-tu...dev.js gzip 70 kB 70 kB ✓
app-route-tu..prod.js gzip 48.6 kB 48.6 kB ✓
app-route-tu...dev.js gzip 69.6 kB 69.6 kB ✓
app-route-tu..prod.js gzip 48.4 kB 48.4 kB ✓
app-route.ru...dev.js gzip 69.6 kB 69.6 kB ✓
app-route.ru..prod.js gzip 48.4 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 kB 43 kB ✓
pages-api-tu..prod.js gzip 32.7 kB 32.7 kB ✓
pages-api.ru...dev.js gzip 43 kB 43 kB ✓
pages-api.ru..prod.js gzip 32.7 kB 32.7 kB ✓
pages-turbo....dev.js gzip 52.3 kB 52.3 kB ✓
pages-turbo...prod.js gzip 39.2 kB 39.2 kB ✓
pages.runtim...dev.js gzip 52.2 kB 52.2 kB ✓
pages.runtim..prod.js gzip 39.2 kB 39.2 kB ✓
server.runti..prod.js gzip 62.4 kB 62.4 kB ✓
Total 2.74 MB 2.74 MB ✓

@mischnic mischnic force-pushed the mischnic/pages-deployment-skew-test branch from 152d38a to 2b879e9 Compare January 26, 2026 11:39
@timneutkens timneutkens merged commit b9ee1db into canary Jan 26, 2026
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@timneutkens timneutkens deleted the mischnic/pages-deployment-skew-test branch January 26, 2026 12:15
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