Everything you need to build on Fastly

Push application logic to the edge with ready-to-deploy recipes, structured tutorials, and API documentation.

Push your app logic to the edge.

Get started without registering — clone this example or start a blank fiddle.

See the possibilities: learn from our fully documented solution patterns for A/B testing, token based authentication, redirects and many more.

Explore solution patterns

Push RUN to test!

Get started with ready-to-deploy recipes.

Solve problems faster with code samples developed by Fastly’s experts. Copy the code, customize it to meet your needs, and deploy it to your configuration.

Ideas, meet tools.

There are near-infinite ways to build custom solutions and applications on Fastly's powerful, programmable edge.

VCL reference

Use the flexible and powerful Varnish Configuration Language to create logic at the edge.

API reference

Imagine new ways to automate your workflow.

Fastly Fiddle

Play with the Fastly platform without logging in.

Join the Compute@Edge beta.

Bring your most complex problems and use cases to our new serverless compute environment. Powered by WebAssembly and with 100x faster startup time than other serverless offerings, you can do more at the edge with unprecedented power, flexibility, and scale.

Apply for the beta

Discover what’s happening at the edge.

The edge of the network is an exciting, new frontier. Read the latest about the evolving protocols and experimental technologies shaping the future of the internet.

Cache-Control in the wild

The Cache-Control response header is one of HTTP’s more widely known header fields; it allows a site to control how caches handle their data in CDNs, browsers, and elsewhere. This post digs into how it’s used (and misused) on the web. While we’ll see that the vast majority of sites are using it correctly, the data shows that many developers don’t understand some of the details — and that sometimes they give up and send everything that looks like it might help.

Leveling up observability with Compute@Edge

Observability is hard. Distributed systems, dev and testing environments, and outside vendors all complicate the problem. With Compute@Edge, Fastly wants to make observability easier. Here’s what we’re doing.

TLS 1.3 is faster, more robust, and now available

TLS 1.3 is now available for Fastly customers. The newest version of the TLS protocol, TLS 1.3 is designed to improve the performance and security of traffic served over HTTPS.

Fastly Labs

Step inside our collective space dedicated to innovation at the edge. Run experiments and test-drive our latest in-progress projects, like our native runtime and compiler, Lucet or our multi-language, browser-based editor, Terrarium.

Visit Fastly Labs