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[CC] Fix dev validation error from server action bound args#88600

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lubieowoce merged 3 commits intocanaryfrom
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Jan 15, 2026
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[CC] Fix dev validation error from server action bound args#88600
lubieowoce merged 3 commits intocanaryfrom
lubieowoce/fix-bound-args-cache-components

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@lubieowoce lubieowoce commented Jan 15, 2026

In Cache Components, bound args encryption needs to be cached (and tracked with cacheSignal) because it's tasky. We use the serialized bound args themselves as a cache key. However, in dev, the key ends up containing debug info (in particular, timing information) so it's different every time . This causes a cache miss and results in a static shell validation failure.

The fix is to use a dummy debug channel to pipe the problematic debug info into the void and thus make the key be deterministic.

@lubieowoce lubieowoce changed the title [CC] Fix false-negative dev validation error from bound args [CC] Fix dev validation error from server action bound args Jan 15, 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) 455ms 456ms ✓ █▁▁▁▁
Cold (Ready in log) 440ms 439ms ✓ █▆▆▅▅
Cold (First Request) 1.165s 1.215s ✓ █▇█▇█
Warm (Listen) 456ms 457ms ✓ ▅▁▁▁▁
Warm (Ready in log) 448ms 443ms ✓ ▃▁▁▁▁
Warm (First Request) 344ms 343ms ✓ ▆▁▆▆▂
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 456ms 456ms ✓ ▁▁▁▁▁
Cold (Ready in log) 441ms 439ms ✓ ▄▅▄▄▁
Cold (First Request) 1.820s 1.805s ✓ ▂▃▂▂▁
Warm (Listen) 457ms 456ms ✓ ▁▁▁▁▁
Warm (Ready in log) 439ms 440ms ✓ ▃▄▅▄▁
Warm (First Request) 1.821s 1.828s ✓ ▂▂▃▂▁

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 4.071s 4.076s ✓ ▄▁▂▁▁
Cached Build 4.082s 4.108s ✓ ▄▁▁▁▁
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 13.969s 13.942s ✓ ▁▁▁▁▁
Cached Build 14.030s 14.026s ✓ ▁▁▁▁▁
node_modules Size 458 MB 458 MB ✓ ▁▁▁▁▁
📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles: **430 kB** → **430 kB** ✅ -93 B

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

Server

Middleware
Canary PR Change
middleware-b..fest.js gzip 790 B 790 B ✓
Total 790 B 790 B ✓
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 451 B 451 B ✓
Total 451 B 451 B ✓

📦 Webpack

Client

Main Bundles
Canary PR Change
2086.HASH.js gzip 169 B N/A -
2161-HASH.js gzip 5.41 kB N/A -
2747-HASH.js gzip 4.48 kB N/A -
4322-HASH.js gzip 52.3 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 38.6 kB 38.9 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 51.9 kB -
6349-HASH.js gzip N/A 4.46 kB -
7019-HASH.js gzip N/A 5.43 kB -
b17a3386-HASH.js gzip N/A 62.3 kB -
Total 225 kB 225 kB ✅ -12 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 ✓
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hooks-HASH.js gzip 385 B 384 B ✓
image-HASH.js gzip 580 B 580 B ✓
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link-HASH.js gzip 2.5 kB 2.51 kB ✓
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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 125 kB 125 kB ✓
page.js gzip 242 kB 237 kB 🟢 4.86 kB (-2%)
Total 366 kB 362 kB ✅ -4.85 kB
Middleware
Canary PR Change
middleware-b..fest.js gzip 656 B 653 B ✓
middleware-r..fest.js gzip 155 B 156 B ✓
middleware.js gzip 33 kB 33.3 kB 🔴 +333 B (+1%)
edge-runtime..pack.js gzip 842 B 842 B ✓
Total 34.6 kB 35 kB ⚠️ +331 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 738 B 738 B ✓
Total 738 B 738 B ✓
Build Cache
Canary PR Change
0.pack gzip 3.66 MB 3.66 MB 🔴 +4.32 kB (+0%)
index.pack gzip 100 kB 101 kB ✓
index.pack.old gzip 101 kB 98.8 kB 🟢 2.03 kB (-2%)
Total 3.86 MB 3.86 MB ⚠️ +2.38 kB

🔄 Shared (bundler-independent)

Runtimes
Canary PR Change
app-page-exp...dev.js gzip 303 kB 303 kB ✓
app-page-exp..prod.js gzip 158 kB 158 kB ✓
app-page-tur...dev.js gzip 303 kB 303 kB ✓
app-page-tur..prod.js gzip 158 kB 158 kB ✓
app-page-tur...dev.js gzip 300 kB 300 kB ✓
app-page-tur..prod.js gzip 156 kB 156 kB ✓
app-page.run...dev.js gzip 300 kB 300 kB ✓
app-page.run..prod.js gzip 156 kB 156 kB ✓
app-route-ex...dev.js gzip 68.8 kB 68.8 kB ✓
app-route-ex..prod.js gzip 47.6 kB 47.6 kB ✓
app-route-tu...dev.js gzip 68.8 kB 68.8 kB ✓
app-route-tu..prod.js gzip 47.6 kB 47.6 kB ✓
app-route-tu...dev.js gzip 68.4 kB 68.4 kB ✓
app-route-tu..prod.js gzip 47.4 kB 47.4 kB ✓
app-route.ru...dev.js gzip 68.4 kB 68.4 kB ✓
app-route.ru..prod.js gzip 47.3 kB 47.3 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 41.2 kB 41.2 kB ✓
pages-api-tu..prod.js gzip 31.3 kB 31.3 kB ✓
pages-api.ru...dev.js gzip 41.1 kB 41.1 kB ✓
pages-api.ru..prod.js gzip 31.2 kB 31.2 kB ✓
pages-turbo....dev.js gzip 50.8 kB 50.8 kB ✓
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pages.runtim...dev.js gzip 50.7 kB 50.7 kB ✓
pages.runtim..prod.js gzip 38.2 kB 38.2 kB ✓
server.runti..prod.js gzip 62.2 kB 62.2 kB ✓
Total 2.69 MB 2.69 MB ⚠️ +1 B

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@lubieowoce lubieowoce enabled auto-merge (squash) January 15, 2026 20:15
@lubieowoce lubieowoce merged commit bd90b6c into canary Jan 15, 2026
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@lubieowoce lubieowoce deleted the lubieowoce/fix-bound-args-cache-components branch January 15, 2026 20:17
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