Microsoft Azure Solutions Architect Expert AZ-305 Practice Question
Contoso Games is building an analytics pipeline on Azure. The multiplayer game generates up to 250,000 telemetry events per second, each smaller than 1 KB. Azure Stream Analytics jobs must consume these events in near real time, and a nightly batch job must replay the last seven days of data to retrain machine-learning models. You need to recommend an Azure messaging service that can ingest the events and provide time-based replay at this scale. Which service should you choose?
Azure Event Hubs Standard tier with Capture enabled to Azure Blob Storage
Azure Service Bus topic with sessions and duplicate detection enabled
Azure Queue Storage with multiple queues and client-side batching
Azure Event Hubs is designed for high-throughput event ingestion-handling hundreds of thousands to millions of events per second. It can retain event data for up to seven days (longer in the Dedicated tier) and lets consumers start reading at a specific point in time or offset, enabling replay for batch processing. Event Hubs integrates directly with Azure Stream Analytics and supports Capture to Azure Storage for long-term archiving.
Service Bus topics focus on ordered, transactional messaging but are not optimized for sustained, very high-throughput streaming and do not provide offset-based replay. Azure Queue Storage offers simple queues with limited throughput and no native event replay capability. Azure Notification Hubs is intended for push notifications to mobile devices rather than back-end telemetry ingestion. Therefore, Event Hubs best meets the requirements.
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Microsoft Azure Solutions Architect Expert AZ-305
Design infrastructure solutions
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