Support guides

Getting started

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

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

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

Configuration

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

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

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

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

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

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

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

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

About Fastly Image Optimizer

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

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

These articles describe how to purge cache.

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

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

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

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.

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

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

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

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

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

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

Integrations

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

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.

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

Diagnostics

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

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

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