Lesson 2: Headers, Freshness, Bypass, and Revalidation
Lesson Overview
This lesson develops practical knowledge of headers, freshness, bypass, and revalidation within the NGINX Caching and Content Acceleration learning path. Learners move from architecture and planning to configuration, validation, and troubleshooting.
Topics Covered
Cache-control behavior
Expires and freshness
Bypass and no-cache rules
Stale content
Conditional requests
Practical Activity
Create a configuration plan for cache-control behavior.
Perform a guided lab covering expires and freshness.
Validate the result and troubleshoot a scenario involving conditional requests.
Key Takeaways
Explain the purpose of cache-control behavior.
Apply the configuration workflow for bypass and no-cache rules.
Use logs, statistics, and verification steps to confirm expected behavior.
