They Aren't All Mocks
Part 6 of Getting Started with Mocks: stub, spy, fake, mock, and dummy, sorted by what each one does. Java, Node, Go, Python.
Posts by Matt LeRay
Co-founder and CTO of Speedscale, expert in Agentic AI and cloud data warehousing. • 9 posts published
Chaos Monkey Won't Find Your Bug
Infrastructure and application chaos break different layers and find different bugs. Netflix built two systems for a reason. Most enterprises buy just one.
What Mocks Are Actually For
Part 1 of Getting Started with Mocks: the one job a mock does, the five situations where you need one, and what a green mocked test does not prove.
When Handwritten Mocks Stop Scaling
Part 9 of Getting Started with Mocks: a decision framework for stubs, fakes, fake servers, mock servers, record-and-replay, and real dependencies.
Capture Encrypted Microservice Traffic with Speedscale eBPF
Inspect encrypted microservice traffic with Speedscale’s eBPF collector. Check TLS support, node permissions, and Java-agent rollout requirements first.
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.
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.
Inside Kraken: Regression Testing With Traffic Replay
See how Kraken combines traffic replay, stable dependency mocks, and evolving regression coverage to catch Speedscale release failures before production.
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