Question

A latency-sensitive REST API runs on Cloud Run in a single region (us-central1). Analytics show that 40% of requests originate from users in Europe and Asia, and those users experience p95 latency of over 400ms compared to 90ms for North American users. Leadership wants to reduce global latency while avoiding a large increase in idle compute cost. What is the most appropriate optimization?

Accepted Answer

Deploy the Cloud Run service to additional regions closer to European and Asian users and route traffic with a global external Application Load Balancer using serverless network endpoint groups (NEGs).

Answer

Increase the minimum number of instances in us-central1 so warm instances always handle the international traffic faster.

Answer

Enable Cloud CDN in front of the single-region Cloud Run service to cache all API responses globally.

Answer

Upgrade the Cloud Run service to use more vCPUs and memory per instance to reduce per-request processing time.