SERDAR DOĞRUYOL
Crystal Core Team Member
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 →HAHWUL joins the Kemal Core Team as Security Lead
World-renowned white-hat hacker HAHWUL has joined the Kemal Core Team as Security Lead. The same security review that started with a WebSocket smuggling report shaped the 1.13 release — and it is only the beginning.
Read post →Writing
- Jun 11, 2026 cryload 5.0.0: The CI-First HTTP Load Tester That Actually Fails Your Builds
- 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