When encountering PostgreSQL MCP connection failures, it is crucial to first capture a comprehensive evidence bundle before retrying. This bundle should include details about the environment, credentials, DNS resolution, TCP and TLS outcomes, and PostgreSQL-specific error codes. Classifying the failure layer—such as configuration, DNS, TCP, TLS, authentication, authorization, schema, pool, or statement execution—is essential for effective troubleshooting. Transient failures should be retried with backoff and jitter, while non-transient issues like invalid credentials or authorization denials should not be retried. AI
RANK_REASON The item provides technical guidance on troubleshooting database connection issues, which falls under tooling.
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