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Zoompf's Web Performance Blog

The Goldilocks of Performance Conferences

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Looking for a great performance conference to attend? What to see the gurus of our space talking about the performance topics they are passionate about? Then you need to attend the Web Performance Summit 2012. I am super excited that The Web Performance Summit is coming back for its third straight year. So much so [...]

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Messaging, Tunnel Vision, and John Siracusa

When you are creating and selling a product, one thing you refine over time is your messaging. Messaging is the information you convey about your company or product to the outside world. Fundamentally, your message describes what value you provide. While people often frame messaging as “describing what problem you solve” this is a simplified [...]

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CPU Benchmarks for Amazon EC2 and Rackspace Cloud Servers

The cloud has made it very easy to allocate and use computing assets like CPU, Disk, and other services. Zoompf uses virtual servers to power our free scanning service, our performance scanner, and our WPO application. When I originally created these servers in early 2010, I choose Rackspace’s Cloud Servers. Zoompf has been growing a [...]

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Zoompf Speaking at Velocity 2012 Ignite

I’ll be speaking tonight at the Ignite Sessions at O’Reilly’s Velocity conference 2012. Come see me at 7:30 in the main Mission City ballroom as I discuss our recent analysis of HTTP compression usage by the Alexa Top 1000.

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Two Reasons You Should Look at SPDY: 58.23% and 64.33%

Google comes up with lots of interesting technology: PageRank, BigTable, self driving cars. The most interesting invention to me at least recently has been the development of SPDY, Google’s faster HTTP replacement protocol. But will SPDY take off like Gmail? Or end up like Dart, (or Wave, or pubsubhubbub…) Luckily I’ve seen two very important [...]

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How Fast is… Ars Technica?

Our regular video series How Fast Is…? examines real world websites and details the cause of their performances issues as well as what should be done to solve them. After all, the best way to learn about front-end web performance is to see what other people are doing right and doing wrong. In this edition [...]

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Trust (and the Shift Key)

I’ve talked a lot about trust, so this exchange from the Simpsons last night was incredibly funny to me. Homer: Oh Marge, let the kid have his embarrassing secrets and lies. Marge: That is totally irresponsible parenting! Homer: Not according to the Internet. Marge: Where on the Internet? Homer: I’m sure some idiot somewhere agrees [...]

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Too Chunky: Performance and HTTP Chunked Encoding

While debugging a customer issue this weekend, I uncovered a problem with chunked encoding in general, and ASP.NET in particular, that can reduce your website’s performance. Let’s start with some background. Digicure is a web security and performance services company in Denmark. They are also a Zoompf customer. At the end of last week, they [...]

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html5shiv and Serving Content From Code Repositories

There are a lot of interesting findings that came out of my analysis of how the Alexa Top 1000 is using HTTP compression. One finding was that JavaScript is the most common type of content served without compression. I hypothesize that this is due to websites linking to all these 3rd party JavaScript libraries and [...]

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HTTP Compression use by Alexa Top 1000

Yesterday, frontend madman and performance nut Paul Irish reached out to me asking if I had any stats on the use HTTP compression. I’ve written a bunch about the benefits of HTTP compression, as well as the challenges in implementing it. Surprisingly, I realized that, no, I did not have any figures about HTTP compression [...]

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