This guest post was written by Karine Margaryan of OpsGenie. In today’s constantly growing and highly competitive ecommerce market, monitoring website performance, health, and availability is imperative. Every millisecond counts when you run an ecommerce, ebanking, eticketing, or similar website — and user experience principles show that timing is one of the…
Written by Chris Chandler, Network Operations Center Director at Dyn Within most technical operations environments, you’ll find some form of incident response plan. These procedures are used to manage and resolve an incident as well as to communicate with customers when issues arise. At Dyn, we’ve evolved a philosophy around…
This is a guest post written by Roxana Elliott, section.io. When it comes to website performance and speed, we have a saying over here at section.io: Cache is King. We believe that an effective cache setup is the number-one thing websites can do to serve content to visitors as quickly…
Amazon’s AWS (Amazon Web Services) S3 web-based storage service in North America experienced widespread issues beginning at 12:37 PM EST on February 28. As reported on Amazon’s status dashboard, “high error rates with S3 in US-EAST-1.” This was the only explanation provided at the time. Consequently, many popular online services…
The impact of website/app performance on the bottom line of an Internet firm is an undisputed fact (refer to our earlier blog for further discussion on the subject). Over the years, the industry has come to terms with no longer considering performance as an afterthought and making it a top…
Those who fail to learn from history are doomed to repeat it. In a recent performance report for Black Friday and Cyber Monday, we had highlighted (with concrete data) that there were some failures as well as slowdowns on some desktop and mobile sites. The incidents can broadly be categorized…
E.H. Simpson first described this phenomenon in 1951. The name Simpson’s paradox was introduced by Colin R. Blyth in 1972.[1] Blyth mentioned that: G. W. Haggstrom pointed out that Simpson’s paradox is the simplest form of the false correlation paradox in which the domain of x is divided into short…
This is a guest post from Cloudinary, a cloud-based image and video management solution. We are always looking for ways to help companies deliver digital experiences that will meet customers expectations in terms of content and performance. Tackling these 5 challenges is a good step towards delivering a top-notch digital…
In Part I, we provided an overview of the metrics arms race and had walked through the use of sampling in this regard. We had also discussed the importance of baking in recency of data during sampling and some of the pitfalls of sampling such as the sampling error. Recall…
This is a guest post written by EMA Research Analyst Julie Craig. You can also find it published here. Today’s complex computing environments make it difficult to achieve the visibility needed to effectively monitor end-to-end application delivery. For many modern applications, User Experience Monitoring (UEM) solutions are the only real…
