Definition
Resource limits define the maximum amount of a specific resource that a system, application, or user can consume. These limits are implemented to prevent overuse, ensure fair allocation, and maintain system stability and security. In practice, they operate by monitoring resource consumption and triggering actions like throttling, capping, or outright denial when thresholds are reached. Understanding and applying resource limits is crucial for efficient cloud cost management, preventing denial of service attacks, and ensuring application performance. For instance, a web server might have a limit on the number of concurrent connections to prevent overload. This differs from quotas, which often track usage against a predefined budget or allocation rather than a hard operational ceiling. Resource limits are a key concept in cloud computing domains like AWS Certified Solutions Architect Associate and security certifications such as CompTIA Security+.