SERDAR DOĞRUYOL
Crystal Core Team
Author of Kemal
Building gcry
I'm a software engineer, open source advocate, and Crystal Core Team member based in Istanbul. I create tools that make developers' lives better.
5M+ downloads across open source projects
About me →cryload 5.0.0: The CI-First HTTP Load Tester That Actually Fails Your Builds
When you spend years building and optimizing high-performance backend infrastructure like the Kemal web framework, load testing becomes second nature. You want to know exactly how your service behaves under pressure.
Read post →Writing
- Apr 20, 2026 Why Crystal, 10 Years Later: Performance and Joy
- Apr 06, 2026 Rethinking HTTP Benchmarking: Why I Built cryload with Crystal
- Feb 03, 2025 The Zero-Cost Trap: Why AI Code is a Liability
- Nov 13, 2016 Benchmarking and Scaling WebSockets: Handling 60000 concurrent connections with Kemal
- Dec 20, 2015 Building a realtime Chat application with Crystal and Kemal