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Module 13

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Deployment & Operations Patterns

Patterns for safe deployments and operational excellence: blue-green, canary, feature flags, immutable infrastructure, and external configuration.

7 lessons~72 min

What you'll learn

  • •Implement zero-downtime deployments with blue-green and canary strategies
  • •Use feature flags to decouple deployment from release
  • •Design immutable infrastructure for reproducible deployments
  • •Externalize configuration for environment-independent builds
  • •Apply sidecar pattern for observability (logging, metrics, tracing)
1

Blue-Green Deployment

Run two identical production environments: instant rollback, zero-downtime deployment, database migration challenges, and traffic switching strategies.

10m
High
2

Canary Release

Gradually roll out changes to a subset of users: traffic splitting, automated rollback triggers, metrics-based promotion, and A/B testing integration.

12m
High
3

Feature Flags

Decouple deployment from release: flag types (release, experiment, ops, permission), flag lifecycle management, and technical debt considerations.

12m
High
4

Rolling Update

Incrementally replace instances with new versions: max surge, max unavailable, health check integration, and handling backward-incompatible changes.

8m
Medium
5

Immutable Infrastructure

Never modify running servers: build new images, deploy, destroy old ones. Golden images, container images, and infrastructure-as-code integration.

10m
Medium
6

External Configuration Store

Separate configuration from code: centralized config services (Consul, etcd, AWS Parameter Store), hot reloading, and secrets management.

10m
Medium
7

Sidecar for Observability

Attach observability sidecars for logging, metrics, and distributed tracing: Envoy, Fluentd, OpenTelemetry collector, and service mesh integration.

10m
Medium
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