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Skip parsing Early Hints for known empty results #7561

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Store an empty result when Early Hints parsing returns nothing or errors. Previously, we weren't storing anything which resulted in Early Hints being parsed on every request.


  • Tests
    • TODO (before merge)
    • Tests included
    • Tests not necessary because:
  • E2E Tests CI Job required? (Use "e2e" label or ask maintainer to run separately)
    • I don't know
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    • Not required because: no coverage
  • Public documentation
    • TODO (before merge)
    • Cloudflare docs PR(s):
    • Documentation not necessary because: internal change

@GregBrimble GregBrimble requested review from a team as code owners December 16, 2024 13:47
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changeset-bot bot commented Dec 16, 2024

🦋 Changeset detected

Latest commit: 356e483

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package
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@cloudflare/pages-shared Patch

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test.todo(
"early hints should temporarily cache failures to parse links",
async () => {
// I couldn't figure out a way to make HTMLRewriter error out
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I tried:

  • a PNG with image/png (but we have a check earlier for the content type)
  • a PNG with text/html (but HTMLRewriter just skipped over it fine)
  • malformed HTML (but HTMLRewriter just skipped over it fine)

@GregBrimble GregBrimble force-pushed the early-hints-store-empty-links branch from e533b97 to 356e483 Compare December 16, 2024 13:49
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A wrangler prerelease is available for testing. You can install this latest build in your project with:

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/12354029659/npm-package-wrangler-7561

You can reference the automatically updated head of this PR with:

npm install --save-dev https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/prs/7561/npm-package-wrangler-7561

Or you can use npx with this latest build directly:

npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/12354029659/npm-package-wrangler-7561 dev path/to/script.js
Additional artifacts:
npx https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/12354029659/npm-package-create-cloudflare-7561 --no-auto-update
npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/12354029659/npm-package-cloudflare-kv-asset-handler-7561
npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/12354029659/npm-package-miniflare-7561
npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/12354029659/npm-package-cloudflare-pages-shared-7561
npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/12354029659/npm-package-cloudflare-vitest-pool-workers-7561
npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/12354029659/npm-package-cloudflare-workers-editor-shared-7561
npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/12354029659/npm-package-cloudflare-workers-shared-7561
npm install https://prerelease-registry.devprod.cloudflare.dev/workers-sdk/runs/12354029659/npm-package-cloudflare-workflows-shared-7561

Note that these links will no longer work once the GitHub Actions artifact expires.


[email protected] includes the following runtime dependencies:

Package Constraint Resolved
miniflare workspace:* 3.20241205.0
workerd 1.20241205.0 1.20241205.0
workerd --version 1.20241205.0 2024-12-05

Please ensure constraints are pinned, and miniflare/workerd minor versions match.

@CarmenPopoviciu CarmenPopoviciu force-pushed the check-if-none-match-before-fulfilling-preservation-cache branch from e0e7703 to 82dcab8 Compare December 17, 2024 12:58
Base automatically changed from check-if-none-match-before-fulfilling-preservation-cache to main December 19, 2024 14:25
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