Testing
Unit Testing OpenTelemetry Instrumentation: In-Memory Exporters
Custom OpenTelemetry instrumentation is code like any other code — it can be wrong, and wrong instrumentation is worse than no instrumentation.
Observability
Latest
Testing Strategy
Distributed Tracing in Testing: How to Use Traces to Debug Test Failures
When a test fails in a distributed system, the error message tells you what failed — not where, why, or which of the twelve services involved was responsible. Distributed tracing in your test suite gives you the full execution path for every test run, turning hours of log-digging into a
Testing
Distributed Tracing in Microservices Tests: Finding Failures Across Services
When a test fails in a distributed system, the error message tells you what happened but not where.
Chaos Engineering
Chaos Engineering and Observability: You Can't Break What You Can't See
Chaos engineering is not about breaking systems randomly. It's about running controlled experiments to validate hypotheses about system behavior under failure conditions. Without observability, you can't form those hypotheses, can't detect the blast radius of an experiment, and can't determine whether your
Testing
Testing Observability in Microservices: Logs, Metrics, and Traces
Testing observability in microservices is the discipline that nobody implements until an incident exposes the gap.
Testing
Synthetic Monitoring Alerting Strategy: Stop Waking Up for Nothing
Bad alerting is worse than no alerting. A monitoring setup that pages you at 3am for a 2-second blip that self-resolved trains your team to ignore alerts.
Testing
Synthetic Monitoring: The Complete Guide for 2024
Synthetic monitoring is one of those terms that sounds more complicated than it is.
Testing
Synthetic Monitoring Tools Compared: Datadog, New Relic, Checkly, and More
Picking a synthetic monitoring tool is a decision most teams make once and live with for years.
Testing
Synthetic Monitoring vs Real User Monitoring: When to Use Each
Synthetic monitoring and real user monitoring (RUM) both answer the question "is my application working?" — but they answer it differently, from different angles, with different tradeoffs. Most teams need both. The question is understanding what each one tells you. What Each One Is Synthetic monitoring runs scripted tests
Testing
Synthetic Monitoring with Playwright: A Practical Implementation Guide
Playwright is one of the best tools for synthetic monitoring of web applications.
Testing
API Synthetic Monitoring: Health Checks, Latency, and Response Validation
API synthetic monitoring is the most cost-effective monitoring you can do.
Testing
Asserting OpenTelemetry Spans in Integration Tests
Unit tests verify logic in isolation. End-to-end tests verify user-visible behavior.