Our network is designed to provide fast, real-time digital experiences. Built on a highly customized version of Varnish, we use Varnish Configuration Language (VCL) and a global network of powerful servers to deliver intelligent caching and application logic at the edge.
Our Varnish platform gives you access to real-time streaming logs, allowing you to monitor site performance and troubleshoot issues as they happen. Unlike traditional CDNs, we provide 100% of logs in real-time from the network edge. You can even add conditions around logs, such as receiving alerts when broken links are detected.
Fastly logs can be streamed to almost any major logging endpoint, including syslog servers, logging-as-a-service providers (like Sumo Logic, Papertrail, or Logentries), and Amazon S3 buckets. We also support encryption of log traffic using Transport Layer Security (TLS), so you can send sensitive information to log files without exposing data.
Using our analytics dashboard, you can access real-time and historical stats to monitor system health. You can see stats on percentage of requests per second, hit ratios, errors, miss latency, and global traffic profiles, including traffic spikes and instability. These insights can be particularly valuable during high-traffic events; if there’s an issue with your infrastructure, you can quickly identify and fix it while continuing to serve content to your users.
Fastly empowers you to operate at the edge, providing the speed and scalability to support continuous integration / continuous delivery (CI /CD). You can push new code or configuration changes to the edge and see them in production in seconds. If an error occurs, you can use version control for immediate rollback, instantly purging stale content and misconfigurations. Surrogate key purging simplifies the process even further by allowing you to purge all related content with a single invalidation request. Legacy CDNs lack the ability to support CI/CD efforts in this way.