deployment-strategy_skill

Overview

This skill defines and executes safe deployment strategies including Feature Flags, Canary, and Blue-Green releases plus rollback controls. It focuses on minimizing risk during releases by enabling gradual rollouts, instant switches, and automated rollback triggers. The agent produces deployment plans, checklists, and scripts to operate predictable, observable deployments.

How this skill works

The agent configures feature flags (third-party or in-house) to gate functionality per user, group, or percentage. It orchestrates canary and blue-green deployments via Kubernetes manifests and rollout scripts, adjusting replica counts and service selectors to shift traffic. It monitors key metrics and applies automatic rollback rules (error rate, latency, CPU) and executes rollback scripts or disables flags when thresholds are breached.

When to use it

• Rolling out major changes where user impact must be minimized
• Releasing experimental features to limited audiences via flags
• Switching production traffic instantly between versions
• Needing automated rollback if error or latency thresholds are exceeded
• Coordinating multi-step staged rollouts with observability gates

Best practices

• Use feature flags to decouple deploy and release; include a kill switch for emergencies
• Start canary at a small percentage and progress through defined stages with timeboxes and metric checks
• Maintain Blue and Green environments of equal capacity and verify health before switching
• Automate monitoring and rollback conditions for error rate, p99 latency, and resource saturation
• Keep a published deployment checklist and ensure on-call and alerting channels are ready

Example use cases

• Release a new checkout flow to 10% of users via feature flag and increase after validation
• Deploy v2 as a canary with 1 replica while keeping stable replicas for 90% traffic
• Prepare a blue-green switch for zero-downtime cutover with a service selector patch
• Trigger an automatic rollback when error rate exceeds 5% for 5 minutes
• Disable a problematic feature instantly by toggling the feature flag kill switch