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High Availability

High Availability (HA) refers to the design and implementation of systems that aim to ensure a high level of operational performance, typically uptime, by minimizing downtime and reducing the impact of failures. HA systems use redundancy, failover mechanisms, and load balancing to achieve this goal. These systems are crucial for applications where continuous availability is essential, such as in financial services, healthcare, and e-commerce. By ensuring that services remain available even in the face of hardware or software failures, HA enhances reliability and user trust.
Related Terms
Cross-Cutting ConceptCyclomatic ComplexityData ArchitectureEvent-Driven Architecture
What are common techniques for achieving high availability?
Common techniques for achieving high availability include redundancy, failover mechanisms, and load balancing, all designed to minimize downtime and ensure continuous service operation.
Why is high availability important for certain applications?
High availability is important for applications in sectors like financial services, healthcare, and e-commerce, where continuous availability is essential to maintain reliability and user trust.
How do failover mechanisms contribute to high availability?
Failover mechanisms contribute to high availability by automatically switching to a standby system or component in the event of a failure, ensuring minimal disruption and continuous service operation.