IT Glossary & Dictionary

A bug that occurs when the behavior of software depends on the timing or order of uncontrolled events like thread scheduling.

Redundant Array of Independent Disks — a technology combining multiple physical drives into a single unit for performance, redundancy, or both.

A technique that controls the number of requests a client can make to a server within a specified time period.

An access control model where permissions are assigned to roles, and users are assigned to roles rather than getting permissions directly.

A programming technique where a function calls itself to solve a problem by breaking it into smaller subproblems.

An open-source, in-memory data store used as a database, cache, message broker, and queue with sub-millisecond response times.

Restructuring existing code without changing its external behavior to improve readability, maintainability, and performance.

A sequence of characters that defines a search pattern, used for string matching, validation, and text manipulation.

Geographic locations where cloud providers operate data centers, with zones providing redundancy within a region.

The process of copying and maintaining database data across multiple servers for redundancy, failover, and read scaling.

An elegant HTTP library for Python that simplifies making web requests with a human-friendly API.

A web design approach that makes web pages render well on all screen sizes using flexible layouts and media queries.

An architectural style for designing networked applications using standard HTTP methods and stateless communication.

A server that sits between clients and backend servers, forwarding client requests and returning server responses on their behalf.

A deployment strategy that gradually replaces old application instances with new ones, maintaining availability throughout.

The superuser account in Unix/Linux systems with unrestricted access to all commands and files.

A database feature that restricts which rows a user can access in a table based on security policies.

A fast, versatile file synchronization tool that efficiently transfers and syncs files between local and remote systems.

A documented set of standardized procedures for handling routine operations and incident response in production systems.