Continuous Integration & Deployment Interview Questions

Integration steps include: 1) Configure test scripts in package.json, 2) Set up test environment in CI, 3) Configure test runners, 4) Set up reporting, 5) Handle test failures. Example: npm test script in CI configuration.

Best practices include: 1) Use --reporter for CI-friendly output, 2) Set appropriate timeouts, 3) Configure retry mechanisms, 4) Handle test artifacts, 5) Implement proper error reporting.

Environment handling: 1) Configure environment variables, 2) Set up test databases, 3) Manage service dependencies, 4) Handle cleanup, 5) Isolate test environments for each build.

Test reporting involves: 1) Generate test results, 2) Create coverage reports, 3) Track test trends, 4) Identify failures, 5) Provide build status feedback. Important for build decisions.

Failure handling: 1) Configure retry mechanisms, 2) Set failure thresholds, 3) Generate detailed reports, 4) Notify relevant teams, 5) Preserve failure artifacts for debugging.

Parallelization strategies: 1) Split test suites, 2) Use parallel runners, 3) Balance test distribution, 4) Handle resource conflicts, 5) Aggregate test results.

Test data management: 1) Use data fixtures, 2) Implement data seeding, 3) Handle cleanup, 4) Manage test databases, 5) Ensure data isolation between builds.

Coverage purposes: 1) Verify test completeness, 2) Identify untested code, 3) Set quality gates, 4) Track testing progress, 5) Guide test development.

Optimization strategies: 1) Implement caching, 2) Use test parallelization, 3) Optimize resource usage, 4) Minimize setup time, 5) Remove unnecessary tests.

Common configurations: 1) Install dependencies, 2) Run linting, 3) Execute tests, 4) Generate reports, 5) Deploy on success. Example using GitHub Actions or Jenkins.

Automation implementation: 1) Configure test triggers, 2) Set up automated runs, 3) Handle results processing, 4) Implement notifications, 5) Manage test schedules.

Dependency management: 1) Cache node_modules, 2) Use lockfiles, 3) Version control dependencies, 4) Handle external services, 5) Manage environment setup.

Database testing: 1) Use test databases, 2) Manage migrations, 3) Handle data seeding, 4) Implement cleanup, 5) Ensure isolation between tests.

Deployment testing: 1) Test deployment scripts, 2) Verify environment configs, 3) Check service integration, 4) Test rollback procedures, 5) Verify deployment success.

Continuous testing: 1) Automate test execution, 2) Integrate with CI/CD, 3) Implement test selection, 4) Handle test feedback, 5) Manage test frequency.

Stability strategies: 1) Handle flaky tests, 2) Implement retries, 3) Manage timeouts, 4) Handle resource cleanup, 5) Ensure test isolation.

Artifact management: 1) Store test results, 2) Handle screenshots/videos, 3) Manage logs, 4) Configure retention policies, 5) Implement artifact cleanup.

Infrastructure testing: 1) Test configuration files, 2) Verify resource creation, 3) Check dependencies, 4) Test scaling operations, 5) Verify cleanup procedures.

Test monitoring: 1) Track execution metrics, 2) Monitor resource usage, 3) Alert on failures, 4) Track test trends, 5) Generate performance reports.

Advanced integration: 1) Implement custom plugins, 2) Create deployment pipelines, 3) Automate environment management, 4) Handle complex workflows, 5) Implement recovery procedures.

Advanced orchestration: 1) Manage test distribution, 2) Handle complex dependencies, 3) Coordinate multiple services, 4) Implement recovery strategies, 5) Manage test scheduling.

Microservices deployment: 1) Test service coordination, 2) Verify service discovery, 3) Test scaling operations, 4) Check service health, 5) Verify integration points.

Deployment verification: 1) Test deployment success, 2) Verify service functionality, 3) Check configuration changes, 4) Test rollback procedures, 5) Verify system health.

Blue-green testing: 1) Test environment switching, 2) Verify traffic routing, 3) Check state persistence, 4) Test rollback scenarios, 5) Verify zero downtime.

Canary testing: 1) Test gradual rollout, 2) Monitor service health, 3) Verify performance metrics, 4) Handle rollback triggers, 5) Test traffic distribution.

Service mesh testing: 1) Test routing rules, 2) Verify traffic policies, 3) Check security policies, 4) Test observability, 5) Verify mesh configuration.

Chaos testing: 1) Test failure scenarios, 2) Verify system resilience, 3) Check recovery procedures, 4) Test degraded operations, 5) Verify system stability.

Configuration testing: 1) Test config changes, 2) Verify environment configs, 3) Check secret management, 4) Test config validation, 5) Verify config deployment.