a type of cyber attack where multiple compromised computer systems attack a target, such as a server, website, or other network resource, causing a denial of service for users of the targeted resource.

"A DDoS attack can overwhelm the targeted server with requests, making the website or service unavailable to legitimate users."

A command in Git that shows what revision and author last modified each line of a file.

"Using git blame can help identify who made a particular change to the source code and why."

A tool for dependency management in PHP, allowing users to declare the libraries their project depends on and it will manage (install/update) them for them.

"Composer simplifies the process of working with PHP packages, ensuring that the correct versions and dependencies are used in the project."

A markup language that defines a set of rules for encoding documents in a format that is both human-readable and machine-readable, often used for data interchange, configuration files, and representing structured data in web services and APIs.

"The configuration file was written in XML format for easy readability and extensibility."

A mathematical notation where every operator follows all of its operands, eliminating the need for parentheses to denote the order of operations.

"The RPN calculator allowed users to input expressions without worrying about parentheses."