Website Performance and Security Blog

Where our team discusses website performance, scalability and security. We write about Varnish Cache, Modsecurity, CDNs, releases, and our team.

Your marketing team might be hurting your website performance

Melissa Kilbourne | July 12, 2016 | Marketing, Common mistakes

Did you know your marketing team could be impacting your page load times? Or worse, their activities could bring your site down?

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A simple guide to supercharging your site with

Jackson Roberts | July 05, 2016 | CDNs 101

If you operate a website, a massive wave of traffic can be a very appealing idea. However, such a wave can also knock your site offline, or leave it crawling at slow speeds.

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Website Milliseconds Matter – But Why?

Stewart McGrath | July 01, 2016 | Marketing, Caching, Performance

The evidence is conclusive; website page load time matters. The faster your website the more revenue your website will generate. Amazon and Google have studied this phenomenon. We have studied it and recently produced a great summary of their findings.

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Long TTFB with HTTP2 in WebPageTest

Shaun Guo | June 28, 2016 | Performance

WebPageTest is a common tool that is used by us and our clients to examine site performance. It generates a beautifully detailed waterfall with great information on each request.

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Announcing free hosted DNS

Melissa Kilbourne | June 22, 2016 | CDNs 101, Security, Performance

We have recently released two new features that make it easier to utilize’s CDN for your website. There are two requirements to start serving traffic over

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Announcing free Automated HTTPS Certificates

Melissa Kilbourne | June 22, 2016 | Security

We have recently released two new features that make it easier to utilize’s CDN for your website. There are two requirements to start serving traffic over

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Canonical bare domains and cookies

Jason Stangroome | June 21, 2016 | Varnish Cache, Caching, Security

Suppose you bought the domain name “” for your website. Will your visitors enter or just the bare domain in their browser’s address bar to access your site?

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Cross-site request forgery and caching

Jason Stangroome | June 13, 2016 | Caching, Security

As summarised by OWASP, Cross-Site Request Forgery (CSRF) is “an attack that forces an end user to execute unwanted actions on a web application in which they’re currently authenticated”.

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My anniversary

Jason Stangroome | June 10, 2016 | Culture

As at today I’ve been working with for two years. When I joined the company it provided a fully-managed service to its clients. For many this was the ideal arrangement: by leaving web performance to the people with the skills and the tools our customers were free to focus on building new features.

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3rd party JavaScripts and impact on page load speed

Shaun Guo | June 08, 2016 | Performance

3rd party JavaScripts can be great. Scripts such as conversion trackers like Google Analytics are great for the marketing team and management. There are scripts out there that conduct AB testing, such as Optimizely. Other scripts help users navigate the site such as auto complete input for search bars, or promoting pages via social networking like Facebook or Pinterest.

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