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Best Practices: Reliability

The Reliability Best Practices provide in-depth technical implementation guidance for the 10 WAF-REL controls. Each best practice includes context, target state, concrete Terraform examples, typical anti-patterns and metrics.

Overview

Best Practice Topic Related Controls

SLO & SLA Definition

Define, measure and link SLOs with error budgets

WAF-REL-010, WAF-REL-100

Health Checks & Probes

Configure Readiness, Liveness and Startup Probes

WAF-REL-020

Multi-AZ & High Availability

HA architecture with Multi-AZ Compute, DB and LB

WAF-REL-030

Backup & Recovery

Backup strategy, restore tests and DR procedures

WAF-REL-040, WAF-REL-070

Circuit Breaker & Timeouts

Resilience patterns: CB, Timeouts, Retry, Bulkhead

WAF-REL-050, WAF-REL-080

Incident Response

IR plan, runbooks, on-call and post-mortems

WAF-REL-060

Chaos Engineering

Structured fault injection and GameDay execution

WAF-REL-090

Recommended Reading Order

For Beginners (Maturity Level 1 → 2)

  1. SLO & SLA Definition – Set goals first

  2. Health Checks & Probes – Fastest quick win

  3. Incident Response – Set up on-call and runbooks

For Intermediate Users (Maturity Level 2 → 3)

  1. Multi-AZ & High Availability – Implement HA architecture

  2. Backup & Recovery – Test and validate backups

  3. Circuit Breaker & Timeouts – Resilience patterns

For Experts (Maturity Level 3 → 5)

  1. Chaos Engineering – Test systematically