Sentry

This covers the essential Sentry patterns for Next.js apps: wrapping risky operations with captureException, creating performance spans for UI actions and API calls, and structured logging with the logger.fmt template helper. The setup is straightforward with three config files for client, server, and edge runtimes. The performance tracing examples are solid, showing you exactly where to add spans (button clicks, fetch calls) and what attributes to attach. The logging levels give you the full spectrum from trace to fatal. If you're already using Sentry but not tracking performance or using structured logs, this will get you there quickly. The patterns are opinionated enough to be useful without being restrictive.