Azure Event Hub

Question 1

What is Azure Event Hubs?

Answer 1

1. Azure Event Hub is a real-time data ingestion and streaming service. A event stream broker.
2. Designed to stream large volumes of events (Millions)
3. From any source
4. Real-time
5. Telemetry, Log collection, Data-driven applications.
6. Compatible with Kafka
7. Compatable with AQMP 1.0

Question 2

I require Kafka-compatible SaaS services; what options do I have in Azure?

Answer 2

Azure Event Hub is Kafka-compatible, while Karks is not. It is 100% compatible and can be used instead of Kafka with no code changes.

Question 3

When should you use Event Hubs?

Answer 3

Azure Event Hubs is the go-to streaming ingestion platform for all applications, big data, etc.

Question 4

I wnat to ingest streaming data from thousands of IoT devices; what should I use?

Answer 4

Azure Event Hubs

Question 5

I wnat to ingest streaming data from thousands of IoT devices and analyze the streaming data. What should I use thet will enable real-time insights?

Answer 5

Azure Event Hubs for streaming and Azure Streaming Analytics for analyzing the data.

Question 6

I am using Azure Event Hubs; when should I use Azure Streaming Analytics?

Answer 6

Realtime streaming processing

Question 7

I am using Azure Event Hubs; when should I use Azure Data Explorer?

Answer 7

Data Analytics

Question 8

I am using Azure Event Hubs; when should I use Azure Databricks?

Answer 8

Batch analysis

Question 9

What protocol inputs are supported?

Answer 9

1. AMQP
2. Kafka
   GTTPS API

Question 10

What is a producer in Azure Event Hubs?

Answer 10

Is the entity(device, app, etc) thet is producing the data and sending it to Azure Event Hubs.

Question 11

Explain the schema registry as used in Azure Event Hubs.

Answer 11

The schema registry ensures compatibility across producers; it is a sort of database of the schemas for the messages arriving at Azure Event Hubs. The messages arriving will be rechecked for compatibility with the schema registry.

Question 12

Name two schemes used for Azure Event Hubs?

Answer 12

JSOIN
AVRO

Question 13

What is an Azure Event Hubs Producer?

Answer 13

These applications can ingest data to an event hub by using Event Hubs SDKs or any Kafka producer client.

Question 14

What is an Azure Event Hubs Partition?

Answer 14

hey’re used to scale an event hub. They’re like lanes in a freeway. If you need more streaming throughput, you can add more partitions.

Question 15

What is an Azure Event Hubs Namespace?

Answer 15

The management container for one or more event hubs or Kafka topics. The management tasks, such as allocating streaming capacity, configuring network security, and enabling geo-disaster recovery, are handled at the namespace level.

Question 16

What is an Azure Event Hubs Consumer?

Answer 16

hese applications can consume data by seeking through the event log and maintaining consumer offset. Consumers can be Kafka consumer clients or Event Hubs SDK clients.

Question 17

What is an Azure Event Hubs Consumer Group?

Answer 17

This logical group of consumer instances reads data from an event hub or Kafka topic. It enables multiple consumers to read the same streaming data in an event hub independently at their own pace and with their offsets.

Question 18

What is Azure Event Hubs, and what purpose does it serve in cloud architecture?

Answer 18

Azure Event Hub service is a real-time streaming platform for ingesting large numbers (millions) of events from almost any application, service, or IoT device.

Question 19

What are the different pricing tiers available for Azure Event Hubs?

Answer 19

1. Basic is for low throughput.
2. Standard adds features like Event Hubs Capture.
3. Dedicated is for enterprises requiring high throughput.

Question 20

What is the difference between an event producer and an event consumer in Azure Event Hubs?

Answer 20

Event producers send data to an Event Hub, while event consumers read the event data from the Event Hub partitions.

Question 21

What are throughput units (TU) in Azure Event Hubs?

Answer 21

Throughput units define Event Hubs’ capacity. Each unit allows up to 1 MB of ingress or 2 MB of egress per second, helping to scale the event ingestion rate.

Question 22

What is partitioning in Azure Event Hubs, and why is it important?

Answer 22

Partitioning allows for parallelism in processing events. Each partition in an Event Hub acts as a sequential commit log, helping ensure that related events are processed in order.

Question 23

How long can events be retained in Azure Event Hubs, and how is this configured?

Answer 23

Events can be retained for 1–7 days (in the Standard tier), and this is configurable through the Event Hub’s properties.

Question 24

What is the Event Hubs Capture feature, and how does it work?

Answer 24

Event Hubs Capture allows you to automatically store streaming data in Azure Blob Storage or Data Lake Storage in batch formats like Avro for further analysis.

Question 25

What is the difference between an event producer and an event consumer in Azure Event Hubs?

Answer 25

Event producers send data to an Event Hub, while event consumers read the event data from the Event Hub partitions.

Question 26

How does Azure Event Hubs ensure message ordering?

Answer 26

Azure Event Hubs ensures message ordering within each partition by maintaining the order in which events are added to the partition.

Question 27

When should you use Azure Event Hubs instead of Azure Service Bus?

Answer 27

Use Event Hubs for big data, real-time event streaming scenarios with high-throughput requirements. Service Bus is for enterprise messaging, especially in ordered, transactional, and stateful workflows.

Question 28

What is an Event Hubs namespace?

Answer 28

An Event Hubs namespace is a container for multiple Event Hub entities, which simplifies the organization and management of event pipelines.

Question 29

How can Azure Event Hubs scale to meet higher ingestion requirements?

Answer 29

Azure Event Hubs scales through additional throughput units (TUs) and partitioning. For larger enterprises, the Dedicated tier supports higher scaling.

Question 30

What are consumer groups in Azure Event Hubs, and how do they work?

Answer 30

Consumer groups in Azure Event Hubs allow multiple applications to read data from an Event Hub independently. Each group has its own pointer to event stream positions.

Question 31

What is checkpointing in Azure Event Hubs, and why is it important?

Answer 31

Checkpointing tracks how far a consumer has read events from a partition. It helps in resuming processing from the last read event in case of a failure.

Question 32

What is Geo-disaster Recovery in Azure Event Hubs, and how is it used?

Answer 32

Geo-disaster Recovery allows replicating Event Hubs namespaces across Azure regions, enabling failover during regional outages.

Question 33

What is the auto-inflate feature in Azure Event Hubs, and how does it help with scaling?

Answer 33

Auto-inflate allows Event Hubs to automatically increase the number of throughput units when the event load grows beyond configured capacity, preventing performance bottlenecks.

Question 34

What protocols does Azure Event Hubs support for event ingestion?

Answer 34

Azure Event Hubs supports AMQP, HTTPS, and Kafka protocols, enabling integration with various systems and platforms.

Question 35

What is the maximum message size supported in Azure Event Hubs?

Answer 35

The maximum message size in Azure Event Hubs is 1 MB.

Question 36

What is the typical latency in Azure Event Hubs, and what factors affect it?

Answer 36

Event Hubs latency is typically low (less than 200 ms for ingress), but factors like partitioning, throughput units, and network latency can affect performance.

Question 37

How is security managed in Azure Event Hubs?

Answer 37

Security in Event Hubs is managed using Azure Active Directory, shared access policies, and data encryption at rest.

Question 38

How can you monitor Azure Event Hubs' health and performance?

Answer 38

You can monitor Event Hubs using Azure Monitor, which provides metrics such as incoming requests, throughput units, and error rates.

Question 39

When should you choose event hub over event grid?

Answer 39

1. Azure Event Hub is designed for large-scale data ingestion. It can handle millions of messages per second and supports message persistence. It is ideal for high-throughput scenarios like telemetry and streaming. 2. Azure Event Grid, while also supporting event-driven architecture, is optimized for lightweight event notifications. It focuses on event distribution rather than handling a massive influx of messages over time. It does not focus on message persistence like Event Hub does.

Question 40

In Azure Event Hub, we have Producers and Consumers; what other names can we use to describe them?

Answer 40

Publishers and Subscribers

Question 41

Is Azure Event Hub a Message broker?

Answer 41

No, Azure Event Hubs is not a message broker in the traditional sense. It’s an event ingestion and streaming service designed primarily for high-throughput data streaming and real-time analytics rather than for typical message brokering tasks like routing messages to multiple subscribers with guaranteed delivery.