Validate Spring Boot Upgrades with Traffic Replay
Spring Boot upgrades silently change JSON contracts and autoconfiguration. Use traffic replay to catch every regression before production.
Posts about developer productivity
Browse 76 posts in this category
Run Local LLMs on Mac to Cut Claude Costs
A practical hybrid workflow that uses costly LLM APIs for planning and local models (via Ollama + OpenCode) for execution, guarded by deterministic evals.
Replace API Synthetics with Traffic Replay
UI synthetics only tell you something is broken. Traffic replay per microservice isolates failures before any human walks up. Zero scripts required.
The 4 Golden Signals of Monitoring Explained
Learn the 4 golden signals — latency, traffic, errors, and saturation — and how to use them for monitoring, alerting, and pre-release testing.
Oracle JDK to OpenJDK: A Guide to Reliable Migration Testing
Record production traffic on Oracle JDK, replay it on OpenJDK, and catch every regression before users do. A step-by-step Speedscale guide.
Top 14 Postman Alternatives 2026
Postman is a powerful tool for API testing and collaboration, but there are several alternatives that cater to different preferences, workflows...
6 Golang Testing Frameworks for Every Type of Test
What do good tests look like, and do you even need a Golang testing framework? It’s a loaded question with an open answer.
Using GRPC with Python Best Practices Guide
Microservices are now the architecture of choice for many developers when crafting cloud-native applications.
Refactor Safely with AI: Using MCP and Traffic Replay to Validate Code Changes
Use traffic replay via MCP to create a tight feedback loop for AI coding agents, preventing hallucinated success by validating against immutable.