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How to Test & Benchmark CDNs?
I recently came across a very interesting post about CDN testing by Jonathan Klein, someone I respect tremendously in the Web Performance world. During his tests with Webpagetest he was unable to...
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How Hot is Your Web Performance?
I have always been very impressed by people who can: Extract Information from Data and turn it into Knowledge. In my day-to-day job there are 3 people who inspire me with either their vision, doing or...
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Web Performance Pixie Dust!
If you believe in Fairy Tales, Santa, and Magic Kingdoms, please stop reading this post immediately! In the past few weeks, I have been bombarded by catch phrases and soundbites like these: Hey that...
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A Web Performance Broken Promise!
This is a fictitious conversation, I envisioned yesterday between a big e-commerce company and their CDN provider. “Dear CDN, when you approached me many years ago, you promised me web performance,...
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Pixels Gone Wild!!!!
In 2011, I posted an article, “Webpages turning into Airports without a Traffic Controller!” which talked about the complexity of current pages relying more and more on so many third parties from...
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Holiday Shopping 2012: Checklist to Fast Sites
We are exactly a month away from the start of the busiest time of year for the Ecommerce industry and there is the great possibility that in 2012 more money will be processed via “online” cash...
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Performance as Craft!
Last week my good friend Jonathan Klein at Etsy published a blog about the latest performance achievements at Etsy. I have always been a big fan of Etsy’s IT team, they are very transparent about...
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Holiday Shopping 2012, State of Web Performance
The biggest online shopping season to date is about to start next week. It is one of the most important events for a retailer and probably the most stressful period for their IT operations. It is also...
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Holiday Shopping 2012, Single Point of Slowness.
The majority of the top retail websites performed very well on Black Friday weekend. Congratulations to all of you, engineers, operations, devops, performance engineers, network engineers and everyone...
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Black Friday & Cyber Monday – 2012 – The results are in!
According to IBM, Black Friday 2012 sales increased by 20%, Cyber Monday by 30% from last year. We monitored the web performance of 70 website (Excluding Netflix, Blockbuster, 1800 Flowers,...
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A Comprehensive Guide to WebP
This is a guest post courtesy of Jonathan Klein. The post originally appeared on Jonathan’s Blog on Feb 20th, 2013. WebP (pronounced “weppy“) is an ambitious and promising new image format that was...
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Faster, smaller and more beautiful web with WebP
This is a guest post courtesy of Ilya Grigorik. The post originally appeared on Ilya’s blog on March 7, 2013. At the risk of sounding repetitive… An average page is now over 1300 kB in size and over...
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A million thanks!
This post has nothing to do with web performance… well kind of. Starting a company is an adventure, with its highs and lows. It’s a real roller coaster, but no one told us that when we decided to...
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Catchpoint Nodes Take Over London
This week Catchpoint launched 6 new nodes in London, which are connected to 6 consumer ISPs: British Telecom, O2, Virgin Media, TalkTalk, Orange, and Sky. The connections range from ADSL2 to Cable....
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The Domino Effect of LinkedIn’s DNS Outage
On Wednesday night users trying to access LinkedIn site were redirected to servers owned by Confluence Labs. The outage lasted a couple of hours and a post mortem Thursday described the issue as...
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Apple: Please Support Navigation Timing API in Safari
Today many websites leverage Real User Measurement (RUM) technologies to measure and optimize user experience. The primary method to collect the data is based on the Navigation Timing API spec from...
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How the NYT Was Up When It Was Down
Yesterday, the big web news story of the day was the NYT outage. But the bigger performance story of the day was not the fact the NYT was down for a few hours, but rather, how the NYT team did all...
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On Mobile, Data URIs are 6x Slower than Source Linking
Today’s blog is a repost from Peter McLachlan, Chief Architect at Mobify. The article originally appeared on Mobify’s blog on July 23, 2013. As a web developer, you’re likely well aware that a key...
View ArticleMastering Disaster – NY Velocity Ignite Presentation
Recent web failures, like the highly publicized crash of Obamacare’s website last week, have put unfortunate businesses in the spotlight and the lucky ones on high alert. Even companies with sterling...
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Black Friday & Cyber Monday – 2012 – The results are in!
According to IBM, Black Friday 2012 sales increased by 20%, Cyber Monday by 30% from last year. We monitored the web performance of 70 website (Excluding Netflix, Blockbuster, 1800 Flowers,...
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