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A global e-commerce company uses Azure Front Door to route traffic to its backend web applications, which are hosted as Azure App Services. They want to implement caching at the edge to reduce latency for static content (images, CSS, JavaScript files) and decrease the load on their backend App Services. Which Azure Front Door feature should they configure to achieve this?
- AHealth Probes
- BCaching policies
- CRouting Rules
- DWeb Application Firewall (WAF)
Show answer & explanationAnswer & explanation
Correct answer: B. Caching policies
Azure Front Door's caching policies allow you to define rules for how static content should be cached at the edge locations, reducing latency for users and offloading requests from backend services.
Why the other options are wrong
- A. Health Probes are used to monitor the health of backend instances and ensure traffic is only sent to healthy ones, not for content caching.
- C. Routing Rules determine how traffic is directed to backend pools based on paths, headers, etc., but don't inherently manage content caching.
- D. Web Application Firewall (WAF) provides centralized protection for web applications against common exploits and vulnerabilities, not for content caching.
Azure Front Door Caching
A feature of Azure Front Door that allows static content (images, CSS, JS) to be cached at edge locations globally, reducing latency for users and offloading requests from backend origin servers.
- Caches content at the nearest edge location to the user.
- Improves performance and reduces backend load.
- Configurable with caching policies for different content types.
Memory trick: Front Door routes, caches, and protects, making your app fast and safe.