latency

What you can expect on the exam

• Placement of compute relative to storage. Be ready to evaluate how colocating compute and storage within the same zone or region minimizes network latency by avoiding cross-region network hops.
• Storage location trade-offs. Know the differences among zonal, regional, dual-regional, and multi-regional storage locations when balancing latency requirements against availability, redundancy, and cost.
• Replication delay across regions. Expect to account for the replication delay of asynchronous cross-region copies versus synchronous zone-to-zone copies when addressing regional outage protection.
• Throughput relationship and contention. You may need to recognize that latency scales inversely with throughput and stays relatively constant under load until friction occurs from resource contention.

Related topics