This is the last blog in the series on sampling. In the previous editions (Part I, Part IIa, and Part IIb), we had (a) provided an overview of the metrics arms race and had walked through the use of sampling in this regard, (b) overviewed margin of error associated with…
In an earlier blog, the evolution of performance metrics – for example, from load time to above the fold to speed index – was discussed. As much as this evolution is warranted in the wake of the dynamic application landscape and changing user expectations, the phenomenon also contributes to the…
We discussed the MQTT protocol, how it works, and it’s growing role in the digital landscape in a previous blog post. To better understand the content in this article, read up on the basics of Machine to Machine (M2M) in the previous post. We will be using the Catchpoint MQTT monitor…
The complexity of services needed to deliver an online experience that meets customer’s expectations has grown tremendously over the years. Most of this is hidden to the customer; they only see the site they are viewing, not the ISPs, CDNs, APIs, or the IaaS providers that all have to seamlessly…
Change is the only constant in life. There are many definitions of change, but for the purpose of this blog, I will define change as any deviation or variation between two or more instances. Just as we as humans experience changes in our mood on a regular basis, applications often change from release…
In my last blog, we looked at how data is aggregated based on the trend of data. In this article, we discuss how this data is represented to users in a more meaningful way. The raw data for thousands of websites across different geographies that are measuring network components, page…
Performance analytics is a field which deals with huge discrete data sets that need to be grouped, organized, and aggregated to gain an understanding of the data. Synthetic and real user monitoring are the two most popular techniques to evaluate the performance of websites; both these techniques use historical data…
Waiting for a webpage to load can be painful—but not knowing how to proceed when the page is “stuck” is a nightmare. User satisfaction is dependent on website performance and ease of use – a slow loading website has a negative impact on end-user experience and directly affect conversion rates.…
It’s a Saturday afternoon: An email from a customer drove me to start troubleshooting an issue they were experiencing with Amazon S3. They were experiencing random high wait time, usually an indication of a problem with communication back to some sort of an origin system. Should’ve been a piece of…
As technology continues to advance, an increasing amount of tools is required to manage the day-to-day jobs of IT professionals. Each of these tools adds a layer of complexity to a business’s operations; so at some point, the addition of these tools tend to have an adverse effect on productivity…
