The operating manual for Bazel and Buildbarn.

Practical paths for diagnosing failures, cache misses, and remote-execution bottlenecks.

Start with the symptom.

Curated learning paths and featured resources are shown.

Choose the outcome you need.

Have the exact error?Jump straight to the troubleshooting index.8 guides →

Start from the failure you can see.

Each guide separates what the status means from the causes you still need to verify.

Go to the specification.

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Technical content should show its work.

Report an error or request a correction →
01Primary sources first

Guides link to Bazel, Buildbarn, REAPI, or gRPC references.

02Meaning is not cause

Protocol meaning is separated from causes that require verification.

03Version-aware

Behavior can vary by Bazel, Buildbarn, proxy, and deployment version.

Turn build telemetry into answers.

Apply the same evidence-led approach to the builds running in your environment.