User reported Debrid-Link "often jumps into provider-cooldown" and feels
unstable. Root cause was four cooperating bugs that turned isolated key-level
failures into provider-wide multi-minute outages.
Fix 1: Skip provider-wide circuit breaker for ALL Debrid-Link errors
(download-manager.ts ~8689)
Previously only the explicit `debrid_link_cooldown:` sentinel was bypassed;
every other Debrid-Link error (terminal failures, timeouts, parse errors)
still went through recordProviderFailure() + applyProviderBusyBackoff(),
applying a provider-wide cooldown ON TOP of the per-key cooldown debrid.ts
already managed. Now any error message containing "debrid-link" or where
the failure key is "debridlink" skips the provider-level circuit breaker
entirely. Per-key cooldowns alone are the right granularity.
Fix 2: Transport errors get a short 15s cooldown, not 2 min
(debrid.ts ~2684)
A single network timeout / ECONNRESET was parking the key for 2 full
minutes. With 9 keys all of which might experience the same transient
issue at different moments, this could cascade into all keys cooling
down for 2 min each. Now isolated transport hiccups get 15s while real
API/server problems still get the full 2 min.
Fix 3: HTTP 200 with success:false (no error code) is now temporary, not fatal
(debrid.ts ~2691)
Previously these went through to the fallthrough "fatal: true" which
permanently failed the item. Now they get a 30s temporary cooldown and
the item retries on the next key.
Fix 4: setDebridLinkKeyCooldownState is max-wins under concurrent calls
(debrid.ts ~135)
When 8 parallel items all hit the same key with floodDetected, each
computes its own cooldown duration and calls setDebrid LinkKeyCooldown
State. Without max-wins, the LAST setter could shorten the cooldown
(e.g. one item read a 1h Retry-After header, another defaulted to 2 min;
the 2 min would then overwrite the 1h). Now the longer cooldown wins,
with rate_limit/quota/invalid categories also winning over plain
temporary regardless of duration.
Tests: 201/201 (debrid + download-manager) green.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
