Support guides

Getting started

These articles provide basic instructions for getting started with Fastly services.

    Basics

    These articles provide basic information and instructions for configuring Fastly services after getting started.

    Web interface

    These articles describe key features of the Fastly web interface controls.

    Configuration

    These articles provide basic instructions for configuring Fastly services after getting started.

      Caching

      These articles describe configuration settings and changes you can make to your cache settings when setting up Fastly services.

      Conditions

      These articles describe conditions and how to use them in VCL and the Fastly web interface.

      Custom VCL

      These articles describe how to create your own VCL files with specialized configurations.

      Dictionaries

      These articles describe how to move rapid key/value pair decision logic to the edge using dictionaries.

      Domains & Origins

      These articles describe configuration settings and changes you can make to your domains and origins when setting up Fastly services.

      Headers

      These articles describe configuration settings and changes you can make to your headers when setting up Fastly services.

      Image optimization

      These articles provide basic instructions for and examples of setting up and beginning to use the Fastly Image Optimizer.

      Load balancing

      These articles provide information about distributing requests across multiple servers to optimize resource use and avoid overloading any single resource.

      Performance

      These articles describe how to adjust the performance of Fastly's services beyond standard configuration methods.

      Purging

      These articles describe how to purge cache.

      Requests

      These articles describe configuration settings and changes you can make to requests when working with Fastly services.

      Responses

      These articles describe configuration settings and changes you can make to your response settings when setting up Fastly services.

      Video

      These articles describe setup and configuration guidelines for setting up live stream delivery or video on-demand.

      Security

      These articles provide information about the administrative, physical, and technical safeguards that protect the Fastly CDN service, as well as describe how to secure communications between Fastly and your origin servers and customers.

        Access Control Lists

        These articles describe how to restrict access to resources by allowing or blocking IP addresses with access control lists (ACLs).

        Edge Rate Limiting

        These articles describe how to work with Fastly's Edge Rate Limiting feature.

        Securing communications

        These articles describe how to secure communications between Fastly, your origin servers, and your customers.

        Security measures

        These articles provide information about the administrative, physical, and technical safeguards that protect the Fastly CDN service.

        TLS

        These articles describe how to set up TLS certificates with Fastly services.

        Web Application Firewall (2020)

        These articles provide information about the Fastly Web Application Firewall (WAF 2020) security product.

        Web Application Firewall (original)

        These articles provide information about the original Fastly Web Application Firewall (WAF) security product.

        Integrations

        These articles describe how Fastly services interoperate with non-Fastly services.

          Logging endpoints

          These articles describe Fastly's support for protocols that allow you to stream logs to a variety of locations, including third-party services, for storage and analysis.

          Non-Fastly services

          These articles describe how non-Fastly services interoperate with Fastly.

          Diagnostics

          These articles describe how to log data, troubleshoot problems, and tune performance.

            Common errors

            These articles describe common errors you may encounter when setting up and configuring Fastly services.

            Debugging techniques

            Because Fastly doesn't store customer logs, we provide information about debugging techniques that help you gain insights into your service configurations.

            Streaming logs

            These articles describe how we support real-time log streaming of data that passes through Fastly.

            Account info

            These articles describe how to manage account access, billing, and security.

              Account management

              These articles describe how to manage account access.

              Billing

              These articles describe Fastly's billing and payment plans and how to make adjustments to your billing information.

              User access and control

              These articles describe how to manage users with permission to access to your account.

              Compute@Edge

              These articles describe how to configure Compute@Edge services.

                Compute@Edge logging endpoints

                These articles describe Fastly's support for protocols that allow you to stream logs to a variety of locations, including third-party services, for storage and analysis.

                Edge Data Storage

                These articles describe how to work with the edge data storage features available with Compute@Edge.

                Reference

                These articles provide reference information about common Fastly terms and configuration settings.

                Products

                Network Services

                These articles provide information about Fastly products that focus on performance (speed), availability, and media and that accelerate content delivery with control from an edge cloud platform.

                Security

                These articles provide information about Fastly products that deliver web application and API protection.

                Observability

                These articles provide information about Fastly products that provide visibility and insights into traffic, security, and performance.

                Compute

                These articles provide information about Fastly's serverless compute environment for building applications and executing at the edge.

                Support

                These articles provide information about Fastly services and support solutions.

                Resources

                These articles provide information about Fastly's product lifecycle and the products within it.

                Legacy offerings

                These articles provide information about Fastly's legacy offerings.

                Third-party information

                These articles provide information about third-party technology and services incorporated into the Fastly CDN service.

                Compliance

                These articles provide information about the administrative, physical, and technical safeguards that protect the Fastly CDN service.

                Fundamentals

                Essentials

                Essentials is a collection of guides that introduce you to core concepts essential to understanding content delivery networks (CDNs) and Fastly.

                Introduction to Fastly's CDN

                This is a step-by-step tutorial that shows you how to use Fastly with an example website and domain name. It guides you through the steps of caching and delivering a static website using the Jekyll static site generator, Amazon AWS, and the Fastly CDN.

                Introduction to Fastly Image Optimizer

                This is a step-by-step tutorial that shows you how to set up Fastly's Image Optimizer ("Fastly IO") for a real website. It builds on the concepts introduced in Introduction to Fastly's CDN, and it guides you through the steps of optimizing the images for Taco Labs, the static website we previously used as an example.

                Changes