Elevated connection churn can be a sign of an unhealthy distributed system. Connection churn refers to the rate of TCP client connections and disconnections in a system. Opening a connection incurs a CPU cost on both the client and server side. Keeping those connections alive also has a memory cost. Both the memory and CPU overhead can starve your client and server processes of resources for more important work.

While it’s easy to think that everything is now in the cloud, there are still some use cases and some businesses that need private data centres. In this blog, we look at the benefits of colocation and explore the key considerations for businesses when choosing colocation services. Colocation, often shortened to ‘colo’, is a service provided by data centre owners and operators where the floor space and facilities, including electricity and connectivity, are rented to private enterprises.

Ralph Marsten once said, “Don't lower your expectations to meet your performance. Raise your level of performance to meet your expectations.” Many organizations today seem to follow the opposite. If everything looks green on a dashboard, they assume all is well. But is it?

tldr: This post discusses how to measure CDN request locality without indexing a single log. The function of a CDN is to bring cacheable data, like pictures & videos, physically closer to your customers. This reduces latencies, and load on your backend servers. When measuring CDNs, there are some very common metrics.