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Fastly customers can use ESI to cache pages that contain both cacheable and uncacheable content (such as user-specific information).

Vary is one of the most powerful HTTP response headers. However, if used incorrectly, it can cause problems for developers. Understand vary header best practices to reduce mistakes and…

Introduced in the most recent release (0.6.0), adaptive plots add a level of flexibility and interaction that was sorely missing in the library. In this post, we’ll talk about what this…

At Fastly, we believe that the freedom to experiment is what makes the web great. We're excited by the cutting edge breakthroughs in file encodings that are happening almost every day…

Over the past few years, the various boroughs of New York have come together to build a very active technology community. We’ve been attending a lot of these community events, and now we’ve…

Streaming logs is one of our most popular features. It's fast and flexible, giving operations teams more data from the edge than ever before and in real time. Since its release, we've seen…