Error Tracking

Self-hosted error tracking gives engineering teams visibility into application crashes, exceptions, and performance issues without sending stack traces, user context, and request payloads to third-party servers. Open source alternatives to Sentry (which itself offers a self-hosted edition), Bugsnag, and Rollbar provide real-time error aggregation, source map support, and alerting on your own infrastructure. Sentry's self-hosted deployment is the most feature-rich option, providing the same error tracking, performance monitoring, and session replay capabilities as their SaaS offering. GlitchTip provides a lighter-weight alternative for teams that need error tracking without the resource requirements of a full Sentry deployment. The security case for self-hosted error tracking is often underappreciated: error payloads routinely contain user PII, session tokens, API keys in request headers, and database query parameters that were never intended to leave your network. Sending this data to a SaaS error tracker creates an unintended data exposure surface. Cost is another factor -- SaaS error tracking pricing scales with event volume, and a single deployment issue can generate millions of error events that blow through monthly quotas. Self-hosted error tracking handles volume spikes without billing surprises. Docker Compose and Kubernetes Helm charts make deploying Sentry manageable, though it requires PostgreSQL, Redis, Kafka, and ClickHouse for a production setup. When evaluating self-hosted error tracking, consider SDK support for your languages and frameworks, source map and symbolication handling, alerting integrations, and data retention configurability. Self-hosted error tracking ensures that your application's failure modes -- and the user data associated with them -- remain confidential.