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Copilot AI commented Jul 5, 2025

  • Explore repository and understand the code structure
  • Understand the unresolved comment about CdnOrigin detection logic
  • Fix CdnOrigin detection to only apply when there's a single Netlify Edge miss (no other cache entries)
  • Remove test case for Netlify Edge miss + Netlify Durable miss scenario
  • Update comments to clarify the specific condition
  • Verify all tests pass (102 tests)
  • Verify lint and typecheck pass

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Note

Differentiate CDN edge vs origin in served-by logic; add CdnOrigin detection on single Netlify Edge miss and update tests accordingly.

  • Utils (app/utils/getServedBy.ts)
    • Introduce ServedBySource.CdnEdge and ServedBySource.CdnOrigin; replace former CDN with CdnEdge mapping for "Netlify Edge" hits.
    • Add rule: when Cache-Status contains a single "Netlify Edge" entry with a miss, return CdnOrigin.
    • Preserve existing precedence: cache hits > Function header > EdgeFunction header; throw error otherwise.
  • Tests
    • Update expectations from CDN to CdnEdge in getServedBy.test.ts and getCacheAnalysis.test.ts.
    • Add coverage for CdnOrigin on Netlify Edge miss (including lowercase header variants) and scenarios mixing misses/hits.
    • Ensure tests include explicit miss entries for Netlify Edge when validating other sources (e.g., DurableCache, Function, EdgeFunction).

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Copilot AI and others added 2 commits July 5, 2025 00:27
…ders

Co-authored-by: serhalp <1377702+serhalp@users.noreply.github.com>
Co-authored-by: serhalp <1377702+serhalp@users.noreply.github.com>
Copilot AI changed the title [WIP] Sometimes no cache analysis is rendered at all? Fix cache analysis not rendering when cache miss occurs without function headers Jul 5, 2025
Copilot AI requested a review from serhalp July 5, 2025 00:35
Copilot finished work on behalf of serhalp July 5, 2025 00:35
@serhalp serhalp changed the title Fix cache analysis not rendering when cache miss occurs without function headers fix: fix cache analysis not rendering when edge cache miss occurs Jul 5, 2025
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this project uses pnpm. delete the lockfile.

…revert import changes

Co-authored-by: serhalp <1377702+serhalp@users.noreply.github.com>
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Copilot AI commented Jul 5, 2025

this project uses pnpm. delete the lockfile.

Done! Deleted the package-lock.json file since the project uses pnpm. (fb52dda)

Copilot AI requested a review from serhalp July 5, 2025 02:24
Copilot finished work on behalf of serhalp July 5, 2025 02:24
…he miss instead of loops

Co-authored-by: serhalp <1377702+serhalp@users.noreply.github.com>
Copilot AI requested a review from serhalp July 5, 2025 03:01
Copilot finished work on behalf of serhalp July 5, 2025 03:01
@serhalp serhalp marked this pull request as ready for review July 5, 2025 14:20
Comment on lines 56 to 59
// Check for the specific case of a single Netlify Edge miss - this handles the weird
// Netlify Cache-Status behavior where a miss on the CDN edge means the request was
// forwarded to CDN origin. According to Netlify's cache behavior, when there's a miss
// on "Netlify Edge", the request gets forwarded to the CDN origin to fetch the static asset.
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there's one detail missing here. this only applies when there's a miss on the edge node, but a hit at the CDN origin. This can only be detected by the presence of a cache status entry for Netlify Edge that is a miss and no entries at all for subsequent caches. There's a miss on the edge node, but a hit at the CDN origin. This can only be detected by the presence of a cache status entry for Netlify Edge that is a miss and no entries at all for subsequent caches.

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Fixed the CdnOrigin detection logic to properly handle the case you described. Now checks for Netlify Edge miss AND no subsequent cache hits (not just single entry). This correctly detects when there's a miss on edge but hit at CDN origin. (fc87dc2)

…logic

Co-authored-by: serhalp <1377702+serhalp@users.noreply.github.com>
Copilot AI requested a review from serhalp July 5, 2025 14:29
Copilot finished work on behalf of serhalp July 5, 2025 14:29
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Co-authored-by: serhalp <1377702+serhalp@users.noreply.github.com>
Copilot finished work on behalf of serhalp November 22, 2025 17:46
@serhalp serhalp merged commit fd08de2 into main Nov 22, 2025
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@serhalp serhalp deleted the copilot/fix-91 branch November 22, 2025 18:12
@serhalp serhalp linked an issue Nov 22, 2025 that may be closed by this pull request
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Sometimes no cache analysis is rendered at all?

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