Audit Logging for Privacy and Revenue: What to Keep and Why

Hook: Logs are your evidence — collect wisely

Keeping the right logs protects you legally and helps you root-cause revenue regressions. In 2026, logs must be privacy-aware and actionable.

What to log

• Consent state and timestamp at request time.
• Creative fetch paths and cache hit/miss traces.
• Model decisions and lightweight explainability traces.
• Deployment and canary decisions tied to revenue signals.

Storage and retention

Retain pseudonymised logs with retention aligned to legal requirements and business needs. Use tiered storage for cost efficiency.

References and tools

• Edge caching and logging
• Adaptive delivery logging patterns
• FastCacheX access logs
• Hosted tunnels for reproducing incidents
• Canary recovery logs

Action checklist

1. Define log schema and retention policy.
2. Ensure pseudonymisation and access controls.
3. Automate retention enforcement and auditing.

Final thought

Careful audit logging is a defensive asset — it protects your users and your revenue in 2026.