Deployment Guide

Deployment strategies

NexaTech supports three deployment strategies, selectable per-environment.

Rolling deployment

Replaces instances one at a time. Zero downtime for most workloads but in-flight requests can hit old code during the window.

strategy: rolling
max_unavailable: 25%
max_surge: 25%

Blue-green deployment

Spins up a complete parallel environment, runs health checks, then atomically shifts traffic. Instant rollback by flipping traffic back.

strategy: blue-green
health_check:
  path: /api/health
  threshold: 95%
  window: 60s

Canary deployment

Sends a configurable percentage of traffic to the new version. Automatically promotes or rolls back based on error rate or latency thresholds.

strategy: canary
initial_weight: 5
increment: 10
interval: 5m
success_criteria:
  error_rate: "< 0.1%"
  p99_latency: "< 500ms"