Error Handling

Translating errors at layer boundaries so storage details don't leak into the handler or, worse, into client responses.

Exploring the tradeoffs between wrapping errors at every return site versus wrapping only at boundaries, with no definitive answer - just honest tradeoffs for the kind of software I write.

How Go 1.20's WithCancelCause and Go 1.21's WithTimeoutCause let you attach a reason to context cancellation, plus a gotcha with manual cancel and the stdlib pattern that covers every path.

Simplify Go error handling by consolidating validation and system errors. Learn when to return boolean vs error for clearer failure modes.

Learn how to build custom error types in Go to create stack traces without runtime overhead, inspired by Rob Pike's Upspin error handling.

Build retry logic in Go without reflection using generics. Implement exponential backoff and configurable retry strategies with type safety.

Implement Rust-style Result types for type-safe exception handling in Python using generic Ok and Err types inspired by Black formatter.

Enable Bash strict mode with set -euo pipefail to catch errors early. Exit on failures, treat unset variables as errors, and handle pipeline failures properly.