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feat: add database circuit breaker and health-readiness endpoint

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Introduce a process-wide DatabaseCircuitBreaker that fails fast when Postgres is unavailable (e.g. disk full) instead of letting every request burn doomed EF Core retries. CircuitAwareExecutionStrategy derives from NpgsqlRetryingExecutionStrategy and records success/failure around the public Execute/ExecuteAsync seams; background workers skip work and back off while the circuit is open; the exception middleware maps an open circuit (and other DB outages) to 503. Adds /health (liveness) and /health/ready (readiness, reporting circuit state), plus unit tests for the open/half-open transitions and non-transient SQLSTATE detection.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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nanxun
2026-06-11 17:52:18 +08:00
co-authored by Claude Opus 4.8
parent 6da0690fd3
commit 5196ffa0f0
11 changed files with 632 additions and 14 deletions
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tests/LiveRecorder.Tests/LiveRecorder.Tests.csproj
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@@ -20,6 +20,7 @@
<ItemGroup>
<ProjectReference Include="..\..\src\LiveRecorder.Application\LiveRecorder.Application.csproj" />
<ProjectReference Include="..\..\src\LiveRecorder.Domain\LiveRecorder.Domain.csproj" />
<ProjectReference Include="..\..\src\LiveRecorder.Infrastructure\LiveRecorder.Infrastructure.csproj" />
</ItemGroup>
</Project>