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speedscale

gRPC Mocks, Tests and Contract Checks From a .proto

Oct 26, 2026 By Matt LeRay In Speedscale
Change one field in a.proto from double to string, and nothing complains. The code compiles, the deploy goes green, and a service still built from the old contract keeps answering with a double. Here’s what Go’s protobuf runtime does when a client on the new contract reads that answer: No error. risk_score comes back empty, and the nine bytes of the double are tucked away as unknown fields.
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speedscale

Test and Mock GraphQL APIs Without Trusting the 200

Oct 26, 2026 By Matt LeRay In Speedscale
Replay a GraphQL recording at the server that produced it, and every request comes back 200 OK. Here is one of those 200s, from a Session query whose recorded token has expired: A GraphQL server reports most failures inside a successful HTTP response, so any check that stops at the status code passes this request. And that is the second way GraphQL hides from URL-shaped tooling.
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circleci

How to run fewer tests and speed up CI with CircleCI Smarter Testing

Oct 22, 2026 By Roger Winter In CircleCI
A one-line fix shouldn’t wait on the whole test suite. Yet a typical CI pipeline runs every test on every push, and a single flaky failure sends developers back to the rerun button. CircleCI’s Smarter Testing addresses both problems. Test impact analysis tracks which source files each test executes, then runs only the tests affected by a code change. Auto rerun retries flaky tests inside the job instead of failing the build.
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Quick Load Testing & Mocking with Proxymock and AI #loadtesting #mocktest #softwaretesting #devops

Oct 20, 2026 By Speedscale In Speedscale
Learn how to quickly set up a load testing foundation for your Node app using the free ProxyMock tool combined with an AI coding agent. This walkthrough demonstrates how to record traffic, mock dependencies, and analyze latency distribution results in just a few simple steps. Learn more: speedscale.com.
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CircleCI Smarter Testing Tutorial: Run Fewer Tests and Get Faster Feedback

Oct 13, 2026 By CircleCI In CircleCI
CircleCI Smarter Testing is now generally available. In this tutorial, we’ll show you how Smarter Testing helps you run fewer tests, get faster feedback, and reduce unnecessary CI compute with three capabilities: Then, we’ll put it to the test. For the same code change, a traditional pipeline ran all 9,716 tests across 15 nodes. With Smarter Testing, CircleCI identified just 44 impacted tests and skipped the other 9,672, cutting test runtime from 3 minutes and 56 seconds to 22 seconds.
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