Azure Event Hubs

What Azure Event Hubs is

Azure Event Hubs is a cloud service for handling event streams, available through the web. It supports client applications written in .NET, Java, Python, JavaScript, Go, and C, and includes a schema registry with at-least-once delivery. Four capacity plans—Basic, Standard, Premium, and Dedicated—set different retention and capacity limits. Basic allows up to one day of retention, one consumer group per event hub, 32 partitions per event hub, and 10 event hubs per namespace. Standard allows seven days, 20 consumer groups per event hub, 32 partitions per event hub, and 10 event hubs per namespace. Premium allows 90 days, 100 consumer groups and 100 partitions per event hub, and 16 processing units. Dedicated also allows 90 days, with up to 1,000 consumer groups and 1,024 partitions per event hub, plus 10 capacity units. Basic and Standard are priced per throughput unit per hour, while Premium is priced per processing unit per hour. Dedicated usage is charged in one-hour increments with a four-hour minimum. A 30-day trial is listed, but there is no free plan.

Who it suits

Event Hubs may suit developers building event-streaming applications in its supported client languages. Teams can compare the four plans’ retention and capacity limits against their needs.

Limits

The Basic plan allows one day of retention, one consumer group per event hub, 32 partitions per event hub, and 10 event hubs per namespace. Standard, Premium, and Dedicated raise selected limits, but capacity is billed according to each plan's unit model.

Getting started

1. Open the Azure Event Hubs website
2. Choose a Basic, Standard, Premium, or Dedicated plan
3. Select the required capacity and retention limits
4. Connect an application using a supported client language
5. Use the schema registry and event hubs for your event workload

Verdict

Event Hubs offers several plan tiers and broad client-language support, with limits that vary by tier.