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Implementing PHP Rate Limiting Using Redis on Ubuntu 20.04: A Tutorial

Redis, also called Remote Dictionary Server, is an open-sourced in-memory database. It is a data-structured storage system that runs on a server’s RAM, which is much quicker than the fastest Solid State Drive (SSD). As a result, Redis is very responsive and an excellent fit for rate limiting. Rate limiting restricts the number of times a user may request a …

Overview of DNS Terminologies, Components, and Concepts featured image

Overview of DNS Terminologies, Components, and Concepts

DNS (Domain Name System) is one of the crucial components driving the internet. Having a proper understanding of how DNS works can help diagnose problems with website configuration and broaden your understanding of what’s going on behind the scenes. In this guide, we’ll talk about some fundamental concepts of DNS to provide you with a solid ground while working with …

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Creating a Sudo-Enabled User on CentOS 8

Introduction If you are working with CentOS 8, you should know what are the critical commands to use with it. One of these is the sudo command. This command is very useful for creating new users. With the sudo command, you can grant certain users special administrative privileges. Typically, these privileges are only accessible to the root user. If you …