fix(proxy): scope fallback cache by target URL - #5261
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diegosouzapw merged 1 commit intoJun 28, 2026
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Integrated into release/v3.8.40 — proxy fallback cache scoped by target URL (prevents cross-endpoint poisoning).
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Proxy auto-fallback cached positive and negative probe results by hostname only. A failed probe for one endpoint on a shared API host could suppress a later probe for a different endpoint on that same host for the full fallback TTL.
This scopes fallback cache entries by normalized target URL while preserving the existing host fallback for malformed target URLs.
Validation:
env DISABLE_SQLITE_AUTO_BACKUP=true node --max-old-space-size=8192 --import tsx --test --test-force-exit tests/unit/proxy-fallback-cache-key.test.ts tests/unit/proxy-autoselect-optin-3332.test.ts-> 3/3 passnpm run check:file-size-> passnpx eslint open-sse/utils/proxyFallback.ts tests/unit/proxy-fallback-cache-key.test.ts tests/unit/proxy-autoselect-optin-3332.test.ts-> pass