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DEAll CI/CD Pipeline Tools by Stage
🔍 Stage 1 - Code Quality & Security Scanning
Your code doesn't get trusted. Not even a little.
→ SonarQube runs static analysis on every line
→ TruffleHog crawls git history for exposed secrets
→ Snyk audits every dependency against a CVE database
→ ESLint enforces code style before anything moves forward
🧪 Stage 2 - Testing
The gauntlet your code must survive.
→ Jest / PyTest → unit tests at the function level
→ REST Assured → integration tests across your services
→ Cypress / Playwright → real browser, real user flows
→ k6 / JMeter → thousands of concurrent users hitting your app
→ Pact → contract testing across microservices
📦 Stage 3 - Build & Containerization
Code is clean. Time to package it.
→ Docker builds the container image
→ Trivy scans it for container-level CVEs
→ Artifact gets versioned and pushed to ECR / GCR / DockerHub
🌍 Stage 4 - Environment Promotion
It doesn't go straight to prod. Not a chance.
→ Dev → every commit, instant feedback
→ Staging → mirrors prod, QA breaks it here
→ UAT → stakeholder validation gate
→ Production → controlled, approved, gated
🚀 Stage 5 - Deployment Strategies
How it enters prod is everything.
→ Rolling → instances replaced one by one, zero downtime
→ Blue/Green → identical envs, instant traffic switch
→ Canary → 5% of live traffic first, monitor, then roll out
→ Feature Flags → code ships silently, feature toggles on demand
📊 Stage 6 - Monitoring & Rollback
The pipeline doesn't clock out after deploy.
→ Datadog / Grafana → real time error rates and latency
→ Sentry → catches exceptions the moment they hit prod
→ PagerDuty → wakes the right person up immediately
→ Automated rollback → metrics breach threshold = instant revert
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