Structured Errors in Go: Bridging the Gap Between Logging and Error Handling

This post details experiments in improving error management in medium-sized Go programs, particularly HTTP APIs. The author highlights the limitations of simple error strings for structured logging and efficient filtering. A context-based approach to structured errors is presented, embedding metadata within errors for seamless integration with structured logging. This approach, using custom error types and the context package, enhances error information richness and readability without significant code overhead, simplifying debugging. The author promotes their open-source library, `fault`, to streamline this process.