August 13, 2024

Implementing A/B Testing and HTTP Caching in Phoenix using plug_http_cache

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Implementing A/B Testing and HTTP Caching in Phoenix using plug_http_cache

Source: svground.fr

Phoenix Framework

Tangui's article explores the implementation of HTTP caching for A/B testing in Phoenix applications using the plug_http_cache library. The article details the challenges of caching different versions of a page based on A/B testing groups and proposes using the 'vary' header as a solution. The implementation includes setting A/B test cookies and headers, modifying Phoenix controller logic, and ensuring correct caching behavior. The article also discusses potential issues with shared caches, like CDNs, and provides guidance on preventing cache-related problems.

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