backendPackage backend includes cron and task queue handlers.
backend/internal/metricsPackage metrics includes tsmon metric support.
configPackage config knows how import configs from LUCI-config.
frontendPackage main is the main entry point for the app.
modelPackage model contains datastore model definitions.
rpcPackage rpc contains RPC server implementations.
rpc/memoryPackage memory contains a RPC servers backed by in-memory storage.
testing/roundtripperPackage roundtripper contains http.RoundTripper implementations suitable for testing.

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