Your First Useful Mock
Part 2 of Getting Started with Mocks: a test you cannot write, one seam, and the smallest mock that makes a delayed package happen. Java, Node, Go, Python.
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Your Mock Is Lying
Part 8 of Getting Started with Mocks: the carrier renames a field, production breaks, and every mocked test still passes. Java, Node, Go, Python.
Your OpenAPI Spec Is Not a Test
How to get a first regression test for a service or endpoint with no recorded traffic: let your coding agent pick a source, then record it.
WireMock vs MockServer vs proxymock for API testing
Compare HTTP stubs, request verification, and recorded dependency mocks. Choose WireMock, MockServer, or proxymock for your Java API tests.
Holiday readiness: run your first load test with skills
Start holiday readiness with a local proxymock load test. Use agent skills to record a Node app, mock its API dependency, and inspect the results.
eBPF: Correlating rustls Plaintext to TCP Connections Without a File Descriptor
Follow an eBPF debugging trail through rustls, Tokio inlining, and an empty map to learn how TLS plaintext gets matched to the right TCP connection.
Five Ways to Use OpenTelemetry Beyond Observability
Teams run inventory, security logs, request routing and billing through OpenTelemetry. Five non-observability uses, and the failure mode of each.
From Handwritten Mocks to proxymock: The Complete Loop
Part 10 of Getting Started with Mocks: use proxymock to record real API traffic, inject failures, verify side effects, and expose contract drift.
I built an API traffic classifier for business workflows
I pointed a classifier at 7,943 API calls to find business workflows. It worked, then showed where my assumptions about sessions and patterns fell apart.
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