Web Performance, Chicago-Style

For a pizza connoisseur, comparing deep-dish Chicago-style pizzas to thin-crust New York-style can very often turn into a very heated debate. Just ask Jon Stewart. On our blog, we tend to focus a lot on failures and performance issues because learning from our mistakes is usually the best way to prevent them…

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Don’t Forget to Turn on PFM in the Cloud

The weather-related AWS outages in Sydney on Sunday reminded me about a set of conversations I’ve had over the last few weeks. Many web sites, particularly in the ecommerce and banking industries, were impacted, sending some Australians back to the stone age for a few hours not being able to order groceries online.…

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Amazon Search Outage Offers Two Lessons

Today’s Amazon search outage offers two object lessons on the digital customer experience: monitor everything and communicate proactively. Retailers chasing the industry leader can implement a pair of simple tactics to keep performance issues from turning away buyers. First, the ultimate goal of End-User Experience Monitoring (EUM) is to find…

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CDN Caching Caution

Cash may be king in the real world, but cache is king in the world of the internet. From DNS record TTLs, to HTTP Max-age headers, caching at different levels makes the internet faster and our lives easier. One technology which has contributed extensively over the years in improving web performance is…

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