GitOps & Advanced Patterns
GitOps uses Git as the single source of truth for infrastructure and applications. ArgoCD continuously syncs cluster state with Git repositories, enabling declarative, auditable, and easily reversible deployments.
40 min•By Priygop Team•Last updated: Feb 2026
Advanced DevOps Topics
- GitOps — Git is the single source of truth. Declarative config in repos. Automated sync to clusters. All changes via PRs (auditable, reversible)
- ArgoCD — K8s-native GitOps tool. Watches Git repo, syncs to cluster. Drift detection: alerts when cluster differs from Git. Self-heals
- Flux CD — Alternative GitOps tool. Native K8s controllers. Supports Helm, Kustomize, OCI artifacts
- Service Mesh (Istio/Linkerd) — Traffic management, mTLS, observability at network layer without code changes
- Feature flags — LaunchDarkly, Flagsmith. Deploy code invisibly, enable per-user. Decouple deployment from release
- Blue-Green deployment — Two identical environments: blue (live), green (new). Traffic switch is instant, zero downtime
- Canary deployment — Route 5% traffic to new version, monitor metrics, gradually increase to 100%. Automated rollback on errors
- Platform engineering — Internal Developer Platform (IDP). Self-service for developers. Backstage, Crossplane for infrastructure abstraction