Every organization relies on mission-critical applications and services that ultimately generate revenue, so the user experience has never been more important. Companies trust their developer and operations (DevOps) teams to ensure important applications run smoothly. DevOps teams, in turn, trust application performance optimization tools to quickly identify and resolve issues or avoid them altogether in the first place.

For distributed systems and microservices, message brokers play a very important role. Message brokers keep data flowing smoothly between different parts of our applications. Two names that often come up in discussions about message brokers are RabbitMQ and Kafka. But what exactly are they, and how do they differ?

A 502 Bad Gateway error implies that the server (Nginx) can’t properly communicate with the upstream web application server. A sign of more severe problems, such as server overload, improper configuration, or network failure, a 502 Bad Gateway error can cause service interruption, which can translate to revenue loss. Fortunately, you can easily resolve the error in Nginx once you identify the causes.

Bash, or the Bourne Again SHell, is a command-line interpreter popular in Unix-like operating systems. The default shell for most Linux distributions and older macOS versions, Bash is a preferred tool by many developers and system administrators. A versatile tool for interacting with UNIX-based systems, Bash terminal commands handles a wide range of tasks, including: Bash is the most widely used command-line interface (CLI).

Redis is an in-memory data store used primarily as a quick-response database or an application cache. As an open-source NoSQL database, Redis handles data operations in microseconds, making it perfect for applications that need real-time processing. Fast, flexible, and easy to use, Redis has become a key player in modern application design.. Developers love Redis for its scalability and because it delivers application performance much faster than traditional databases, thanks to its in-memory operations.

As ethical hacking continues to grow in importance, professionals require a reliable operating system to assist them in their tasks. A Debian-based distribution, Kali Linux is the go-to OS for ethical hackers and penetration testers. But why has it become the industry standard? This post will explore what makes Kali Linux essential and dive into the key commands every ethical hacker should know.