Determine Throughput Performance Testing
Measure throughput with defined transaction boundaries, sustainable load stages, latency and error goals, and enough load-generator capacity.
Speedscale Blog
Latest insights on API testing, performance optimization, and software development best practices from the Speedscale team.
How to Calculate TPS for Kubernetes Performance
Calculate TPS from completed transactions and a measured time window. Distinguish requests, business outcomes, retries, latency, and errors.
Diagnose Serial N+1 API Calls With Tempo + proxymock
Diagnose serial N+1 API calls with Tempo and proxymock. Replay recorded traffic, inspect trace windows, and prove a concurrency fix preserves behavior.
Did It Actually Send?
Part 4 of Getting Started with Mocks: the notifier stops returning a message and starts sending one, so the test needs a spy instead of a return value.
What are Ephemeral Environments?
Create ephemeral environments when deployed testing adds value. Version test data, define ownership and expiry, and verify cleanup of external resources.
Ephemeral Environment Testing: Do you need it?
Choose tests for ephemeral environments, keep real integration gates, isolate branch data, and retain evidence before teardown.
Explain Non-CPU Latency With Prometheus + proxymock
Diagnose a p95 latency regression that CPU profiling cannot explain using Prometheus histograms, then prove the fix with identical proxymock replays.
FastAPI Testing: Mock LLM APIs with Recorded Traffic
Record real LLM traffic from a FastAPI app, mock it locally, and replay it in CI with proxymock.
Fixing 403 auth errors when you replay traffic
Replay an authenticated flow and the protected calls fail with 403. Here is how proxymock recommendations fix the expired bearer token in one click.