Rotation, expiration, and revocation of secrets are all important concerns that require careful and difficult up-front design. Transport Layer Security (TLS), the protocol underlying secure web traffic (HTTPS), is one of the cryptographic systems with the largest deployment and day-to-day use, and serves as a good case study for all of the proceeding concerns. In this post, I’ll discuss how revocation is addressed in TLS, and how it relates to both performance and security.

End users are consumers who will use a service, and monitoring their performance is often overlooked. See how monitoring performance of end users improves user experience.

Varnish is an open source web accelerator that is designed for high-performance content delivery. Learn more about what Varnish is and how Fastly's varnish can help accelerate your content.

Today, we’re excited to announce Soft Purge, a new purging feature that allows you to easily mark content as outdated (stale) instead of permanently deleting it from Fastly’s caches. With Soft Purge, you have the same real-time purging options that you get with Instant Purge: purge by URL or by surrogate key.

Fastly has evaluated each of these vulnerabilities and found that only one moderate-severity bug affects our configuration. We are currently testing the patch and coordinating a global release of the updated software across Fastly’s network. We anticipate no customer impact or configuration changes.

The cache hit ratio (or hit ratio for short) is the ratio of hits to cacheable requests (hits and misses combined). There's also cache coverage, the ratio of cacheable requests to all requests (cacheable requests and passes). In most cases, you'll want both to be as high as possible, since misses and passes cause load on your origins, and are slower than cache hits.

In my last blog post, I discussed why you should use a content delivery network. But after you’ve decided to start using a CDN, you’ll need to pick out the right CDN for your business.

We’re huge fans of Transport Layer Security (TLS) at Fastly. Here’s a behind-the-scenes look at how we do encryption at the edge, which can also serve as overall best practices for handling server-side TLS.

This article dives into our support team's training processes and explains how our lessons learned can help your support team grow.

A content delivery network (CDN) is a way to deliver content from your website or mobile application to people more quickly and efficiently, based on their geographic location.

Solid-State Drives (SSDs) are semiconductor-based storage devices that save persistent data by using NAND flash memory. See how Fastly manages caches with SSDs and how you can save.

At Fastly, we've made some key decisions about how to operate and structure our support team in a way that allows us to deliver quality at scale. Some of the lessons we learned are more specific to issues encountered as we grew, but most can be applied to any support or customer-facing team.

As many of you know, TLS best practices have changed a lot in the past two years. Recently, Fastly has changed how we configure TLS to make it even more secure. This includes migrating our TLS certificates from SHA-1 to SHA-2 and disabling RC4 for all our services.

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, and thus worthy of investigation.

What customers encounter when evaluating and onboarding with Fastly isn't arbitrary. It's an experience that we've intentionally crafted. This post will discuss what customers experience, and what we have in place to make sure it happens every time, for every customer.

TLS is especially applicable to news sites. News organizations bear a public responsibility to accurately report the news, and need to take the steps necessary to ensure credibility. The security of online news content is one of the first steps in verifying its veracity while protecting readers.

In the time I've been at Fastly, we've had enough customers and friends ask us about how we do support and what's going on under the hood that it seems appropriate to give a high level overview of how we build, what we've learned, and how other teams can borrow from our setup.

Today Logentries released a Fastly Community Pack, which automatically sets up tags, saved queries, and visualizations in the Logentries dashboard to help Fastly customers get the most out of their real-time logs.