Deep dive: the tech stack behind Spamcheck

GitLab's Security Automation team developed and deployed a new anti-spam engine called Spamcheck to enhance spam detection on GitLab-related public projects. By using Golang and gRPC, the team ensured flexibility, efficiency, and minimal build friction, aligning with GitLab's engineering policies. The infrastructure was built on Google Kubernetes Engine (GKE) and Knative, facilitating stable and scalable operations, while GitLab CI/CD streamlined deployment processes. Spamcheck integrates with GitLab's existing tools, including the Inspector machine learning model, to predict spam and improve accuracy. The system has significantly reduced spam issues, outperforming previous tools like Akismet. Continuous improvements are driven by monitoring performance through GCP Cloud Monitoring services and incorporating user feedback. Future plans include enhancing model development lifecycles and expanding spam detection capabilities across other GitLab areas.

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