-
Video Lesson 24 min
-
VCL 111 Quiz 5 min
-
Reviewing Key Concepts 1 min
-
Course Feedback
VCL 111: Shielding Complications and Solutions
How to avoid edge-case Shielding complications
Course Details
Fastly Shielding feature can introduce some edge-case complications that are not readily apparent. This module will explain how they can arise, and cover some variables that can allow devs to plan around these edge-cases.
Learning Objectives
- Shielding Complications - Different Hash Keys
- How you end up with different Hash keys on Edge & Shield
- Affects Caching AND Purging
- Solutions - Edge logic vs Shield logic
- Examples
- Building Conditions
- Req.backend.is_shield
- Req.backend.is_origin
- fastly.ff.visits_this_service