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Google Cloud Load Balancing (Anycast)

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description Google Cloud Load Balancing (Anycast) Overview

Google Cloud's Global Load Balancing uses a single Anycast IP to route traffic to the closest healthy backend. It leverages Google's massive global fiber network, providing high performance and automatic scaling. This is an enterprise-grade solution for applications that need to handle millions of requests while maintaining low latency and high availability across multiple continents.

help Google Cloud Load Balancing (Anycast) FAQ

What does Anycast mean in Google Cloud Load Balancing?

Anycast means users can connect to the same public IP address while Google's network routes them to an appropriate edge location and healthy backend. This is a core reason Google Cloud can offer global external load balancing rather than only regional traffic distribution.

Does Google Cloud Load Balancing need separate IPs for each region?

For global external HTTP(S) load balancing, a single global Anycast IP can front backends in multiple regions. That is different from many traditional load balancers that are tied to one data center or one region.

How does Google Cloud Load Balancing handle unhealthy backends?

Google Cloud load balancers use health checks to decide which backends can receive traffic. If a backend instance group or service fails its checks, traffic is shifted to healthy capacity according to the configured backend and balancing mode.

How is Google Cloud Load Balancing different from Cloudflare?

Google Cloud Load Balancing is native infrastructure for applications running on Google Cloud backends such as Compute Engine, GKE, and Cloud Run. Cloudflare is a separate edge network often used for DNS, CDN, WAF, bot protection, and proxying traffic in front of many hosting providers.

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