Infrastructure · Software component

DNS Load Balancer

Software componentInfrastructureInfrastructurearc:DNSLoadBalancer

A name-resolution-level load balancer that spreads client traffic across multiple load balancer instances or regional endpoints, removing the single front-end load balancer as a failure point.

Responsibility. Distributes clients across redundant load balancers or regional stacks via DNS resolution.

Also known as: DNS-based load balancing, Nearest-region routing

Variant of Load Balancer abstract

Direct neighbourhood (hover for relationship types)

Relationships

routes to dynamic

Load Balancer abstract Ch4.7

Design guidance

SHOULD route users to the nearest regional stack in multi-region deployments to minimize cross-region traffic.

Classification

Patterns: DNS-based distributionNearest-region routing
Quality attributes: Reliability (ISO/IEC 25010 | NIST AI RMF: valid and reliable)Performance efficiency (ISO/IEC 25010)
Risks mitigated: Load balancer single point of failureCross-region data transfer cost

Sources

Ch4.7: T. Nguyen, "Scaling Strategies," in Mastering Agentic AI Systems: Guide for the NVIDIA NCP-AAI Exam, 1st ed. 2026, ch. 4.7. ISBN: 9798244538229.