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Availability in System Design — Principles, Patterns, and Practical Guidance

Availability in System Design — Principles, Patterns, and Practical Guidance

Availability is one of the core goals in system design. It answers a simple but critical question: can users access the system when they need it? A highly available system continues to work despite server failures, database issues, traffic spikes, deployments, network problems, or even regional outa

Nov 11, 2025 3 1 availability

Availability patterns

Availability patterns

Availability patterns are system design techniques that keep applications operational during failures, overload, dependency issues, or partial outages.

Jan 05 1 availability fault-tolerance high-availability

Scalability, Availability & Stability Patterns

Modern software systems must handle growth, unpredictable traffic, and failures without destroying the user experience. Three core qualities help with this: scalability , availability , and stability .

Nov 09, 2025 1 scalability availability stability

CAP Theorem in System Design

The CAP theorem explains one of the most important trade-offs in distributed system design: when a network partition happens, a system must choose between consistency and availability . This article explains what CAP really means, why partition tolerance is unavoidable in distributed systems, and ho

Nov 12, 2025 1 consistency availability partition-tolerance

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