Operations | Monitoring | ITSM | DevOps | Cloud

Ensuring that networks and the applications they enable are performing as well as they should is a full-time and challenging task for system administrators. We've all encountered scenarios in which end-users complain that an application is slow. Then the network team says it's not their problem, and the development team (or third-party application vendor) also says it's not their problem either.

A web application firewall is an HTTP-level firewall that protects your application against well-known attacks and exploits. Using WAF, you can block traffic to your applications from certain origins and detect and block common attacks from reaching your application.

IT environments are getting increasingly complex and can often straddle on-premises gear, private cloud, public and/or multi-cloud, and SaaS environments... oh, and it’s a moving target. Your legacy applications may have to reincarnate in one of these forms with minimal disruption. And when things go wrong, you need all the help and pointers you can get to identify the root source of the problem and what it’s impacting.

Load balancing is an indispensable technique for improving a website’s performance. I’ll explain why. With Firefox’s Web Developer Tools open, I visited a popular retailer’s website to see how many HTTP requests my browser made when loading the site. In this case, I counted 119 requests needed to render the landing page.