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Performance

January 27, 2015
If you want to increase the efficiency of your Varnish (or Fastly) cache, you need to figure out what traffic is not cached. By definition, any traffic that reaches your origin is not cached…
January 9, 2015
In the second part of our series on accelerating Rails, I'll cover configuration of a few Fastly features, Varnish and Varnish Configuration Language (VCL), and strategies for caching…
December 15, 2014
In the continued quest to increase cache hit ratios, the chant is: "Normalize, normalize, normalize." Less variation in your requests means you have a higher chance of getting hits. This…
November 19, 2014
Caching is one strategy that helps ease scaling pains that I often see Rails developers overlooking. Starting out with caching can be confusing, because terms and documentation can be…
November 17, 2014
In this post, I’m going to discuss how you can leverage ESI and VCL (Varnish Configuration Language, the domain-specific language that powers Fastly’s edge scripting capabilities) to use…
October 27, 2014
Today, we’re excited to announce two related features that lower bandwidth costs and reduce origin load for Fastly customers, resulting in faster downloads for their users: Streaming Miss…
October 22, 2014
Fastly recently conducted an extensive analysis of which resources should be compressed. Today, the results of that analysis are reflected in the Fastly app, which allows our customers to…
October 2, 2014
Hooman Beheshti, VP of Technology at Fastly, recently gave a talk at Velocity NYC 2014 about the challenges CDNs face with dynamic content and how businesses can use programmatic means to…
August 27, 2014
Fastly customers can use ESI to cache pages that contain both cacheable and uncacheable content (such as user-specific information).
August 18, 2014
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…

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