An HTTP cookie is a piece of data stored by the user's web browser. Unless otherwise specified, cookies can be created, read, modified and deleted both by JavaScript and from server-side through HTTP headers.

This tag is for questions pertaining to random numbers and their generators, whether pseudo-random or truly random.

Redux is a pattern and library for managing JavaScript application state, using events called "actions". It serves as a centralized store for state that is needed across your entire application, with rules ensuring that the state can only be updated in a predictable fashion. Redux make it easier to understand when, where, why, and how the state in your application is being updated, and how your application logic will behave when those changes occur.

Servlet is a Java application programming interface (API) running on the server machine which can intercept the requests made by the client and can generate/send a response accordingly.

Video is an electronic medium for the recording, copying, and broadcasting of moving visual images. Use more specific tags when relevant, such as [video-editing] for questions related to trimming and modifying videos, [video-encoding] for questions related to editing videos into any format, and [video-processing] for questions related to processing videos with filtering video frames.

Input is usually related to user input, i.e., to the data that user supplies to a running application. In many systems this input is considered to be potentially dangerous and needs to be sanitized to ensure that the user has not injected runnable code into the application.

Model–View–Controller (MVC) is an architectural pattern, introduced in mid 1970-s in PARC into how to compose software interfacing also with user-interactions. For Microsoft ASP.NET MVC, please use [asp.net-mvc] or [asp.net-core-mvc] tag instead. For Spring MVC, please use [spring-mvc] tag instead.

Xamarin.Forms is a Microsoft product allowing the building of native, cross-platform apps for Android, iOS, Windows, and others from a single shared C# codebase.

The Spark Python API (PySpark) exposes the apache-spark programming model to Python.

URL rewriting module for the Apache web server. It is commonly used for so-called `pretty URLs` , but also provides the power and flexibility to perform various request handling tasks beyond simple substitutions.

JDBC (Java DataBase Connectivity) is the base API which enables interacting with SQL database servers by executing SQL statements using the Java programming language.