# Availability

> The proportion of time a system is operational and able to serve requests.

Record: `lex:availability`
Kind: quality-attribute
Layer: [Correctness Core](https://banes-lab.com/records/layer/correctness-core.md)
Canonical: https://banes-lab.com/ontology/lexicon#lex-availability

## category

- [Quality Attributes](https://banes-lab.com/records/lex-category/quality-attributes.md)

## referenced-by

- [Control Plane](https://banes-lab.com/records/arch/control-plane.md)
- [Leader Election](https://banes-lab.com/records/arch/leader-election.md)
- [Consensus](https://banes-lab.com/records/arch/consensus.md)
- [Fail Safe](https://banes-lab.com/records/arch/fail-safe.md)
- [Fail Secure](https://banes-lab.com/records/arch/fail-secure.md)
- [Eventual Consistency](https://banes-lab.com/records/arch/eventual-consistency.md)
- [Horizontal Scaling](https://banes-lab.com/records/arch/horizontal-scaling.md)
- [Load Balancing](https://banes-lab.com/records/arch/load-balancing.md)
- [Single Source of Truth](https://banes-lab.com/records/arch/single-source-of-truth.md)
- [Failover](https://banes-lab.com/records/arch/failover.md)
- [Replication](https://banes-lab.com/records/arch/replication.md)
- [Blue-Green Deployment](https://banes-lab.com/records/arch/blue-green-deployment.md)
- [Consistency](https://banes-lab.com/records/arch/consistency.md)