GRASP, which stands for General Responsibility Assignment Software Patterns, is a set of guiding principles for object-oriented design. These principles help developers distribute responsibilities among various classes and objects within a software system. Each principle focuses on addressing specific design challenges and ensuring code quality, scalability, and maintainability.

Big O notation is a fundamental concept in computer science and programming. It provides a standardized way to describe the efficiency of algorithms, allowing developers to understand how the execution time or memory usage of their programs will change as the size of the input data increases.

In programming, recursion is a technique where a function calls itself. It’s one of the fundamental principles in computer science, allowing you to solve complex problems by breaking them down into smaller, more manageable parts.

WebSockets are an advanced technology that enables interactive communication between a user’s browser and a server. This is accomplished by creating a “socket”—a persistent communication channel that remains open, allowing both parties to send data at any time.

An annotation in Django is a tool that lets you enhance and extend database queries. It enables you to add calculated values, aggregated data, and other extra fields to query results without having to modify your database schema. An annotation helps you retrieve the data you need in a convenient format, which is especially useful for creating complex queries.

REST, or Representational State Transfer, is an architectural style for designing networked applications. Originally proposed by Roy Fielding in his doctoral dissertation in 2000, REST has become the backbone of many modern web services. Let’s break down what REST is, how it works, and why it’s so important.

Git is a version control system that allows you to efficiently manage and track changes in source code and other files. Git enables multiple people to work on the same project simultaneously, making changes and merging them into a single version. It is one of the most popular version control systems and is widely used in various projects, including software development, scientific research, websites, and much more.