Many users are familiar with the concept of network ping. Especially those who like online games. If you are having connection problems, the most reliable way to check it is to use the "ping" command. But not everyone can answer what a ping really is. In simple words, it is a measure of the time it takes for a network request to get from user to server and back.

IP Blacklists contain ranges of or individual IP addresses ‌you want to block. A blacklist can be used in combination with firewalls, intrusion prevention systems (IPS), and other traffic filtering tools. With the recent developments in cyber security, organizations are increasingly relying on IP blacklisting to protect their networks.

Preloads are a powerful optimization technique that can make significant improvements to crucial performance metrics such as Core Web Vitals. I have written on prefetching a DNS lookup or even preconnecting to a domain. Preloading is a much more powerful extension of these concepts because it enables you to download entire resources in advance. In this article, let’s look at.

This article helps you understand DNS prefetching, one type of resource hint, including what they are, why and how to use them, and best practices for auditing and scaling them.

In this article, let’s take a look at preconnect resource hints — what they are, why and how to use them, and best practices for auditing and scaling them.

Since the beginning of the Internet, the speed of delivering content has been an issue. While processor enhancements, network acceleration, and web frameworks have brought drastic improvements to performance, the goalposts have continued to shift further away; devices operate on wireless connections with limited bandwidth, and the Internet is accessed from every corner of the globe.