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  1. Event Hubs—Real-Time Data Ingestion | Microsoft Azure

    azure.microsoft.com › en-us › services

    Event Hubs is a fully managed, real-time data ingestion service that’s simple, trusted, and scalable. Stream millions of events per second from any source to build dynamic data pipelines and immediately respond to business challenges. Keep processing data during emergencies using the geo-disaster recovery and geo-replication features.

    • Namespace
    • Event Publishers
    • Capture
    • Partitions
    • SAS Tokens
    • Event Consumers
    • Next Steps

    An Event Hubs namespace provides DNS integrated network endpoints and a range of access control and network integration management features such as IP filtering, virtual network service endpoint, and Private Linkand is the management container for one of multiple Event Hub instances (or topics, in Kafka parlance).

    Any entity that sends data to an Event Hub is an event publisher (synonymously used with event producer). Event publishers can publish events using HTTPS or AMQP 1.0 or the Kafka protocol. Event publishers use Azure Active Directory based authorization with OAuth2-issued JWT tokens or an Event Hub-specific Shared Access Signature (SAS) token gain publishing access.

    Event Hubs Captureenables you to automatically capture the streaming data in Event Hubs and save it to your choice of either a Blob storage account, or an Azure Data Lake Service account. You can enable Capture from the Azure portal, and specify a minimum size and time window to perform the capture. Using Event Hubs Capture, you specify your own Azure Blob Storage account and container, or Azure Data Lake Service account, one of which is used to store the captured data. Captured data is written in the Apache Avro format.

    Event Hubs organizes sequences of events sent to an event hub into one or more partitions. As newer events arrive, they're added to the end of this sequence. A partition can be thought of as a "commit log". Partitions hold event data that contains body of the event, a user-defined property bag describing the event, metadata such as its offset in the partition, its number in the stream sequence, and service-side timestamp at which it was accepted.

    Event Hubs uses Shared Access Signatures, which are available at the namespace and event hub level. A SAS token is generated from a SAS key and is an SHA hash of a URL, encoded in a specific format. Using the name of the key (policy) and the token, Event Hubs can regenerate the hash and thus authenticate the sender. Normally, SAS tokens for event publishers are created with only send privileges on a specific event hub. This SAS token URL mechanism is the basis for publisher identification introduced in the publisher policy. For more information about working with SAS, see Shared Access Signature Authentication with Service Bus.

    Any entity that reads event data from an event hub is an event consumer. All Event Hubs consumers connect via the AMQP 1.0 session and events are delivered through the session as they become available. The client does not need to poll for data availability.

    For more information about Event Hubs, visit the following links: 1. Get started with Event Hubs 1.1. .NET 1.2. Java 1.3. Python 1.4. JavaScript 1. Event Hubs programming guide 2. Availability and consistency in Event Hubs 3. Event Hubs FAQ 4. Event Hubs samples

  2. Azure Event Hubs documentation | Microsoft Docs

    docs.microsoft.com › en-us › azure

    Azure Event Hubs documentation. Learn how to use Event Hubs to ingest millions of events per second from connected devices and applications.

  3. May 25, 2021 · Azure Event Hubs is a Big Data streaming platform and event ingestion service that can receive and process millions of events per second. Event Hubs can process and store events, data, or telemetry produced by distributed software and devices.

    • Throughput Units
    • Partitions
    • Next Steps

    The throughput capacity of Event Hubs is controlled by throughput units. Throughput units are pre-purchased units of capacity. A single throughput lets you: 1. Ingress: Up to 1 MB per second or 1000 events per second (whichever comes first). 2. Egress: Up to 2 MB per second or 4096 events per second. Beyond the capacity of the purchased throughput units, ingress is throttled and a ServerBusyException is returned. Egress does not produce throttling exceptions, but is still limited to the capacity of the purchased throughput units. If you receive publishing rate exceptions or are expecting to see higher egress, be sure to check how many throughput units you have purchased for the namespace. You can manage throughput units on the Scale blade of the namespaces in the Azure portal. You can also manage throughput units programmatically using the Event Hubs APIs. Throughput units are pre-purchased and are billed per hour. Once purchased, throughput units are billed for a minimum of one hou...

    Event Hubs organizes sequences of events sent to an event hub into one or more partitions. As newer events arrive, they're added to the end of this sequence. A partition can be thought of as a "commit log". Partitions hold event data that contains body of the event, a user-defined property bag describing the event, metadata such as its offset in the partition, its number in the stream sequence, and service-side timestamp at which it was accepted.

    You can learn more about Event Hubs by visiting the following links: 1. Automatically scale throughput units 2. Event Hubs service overview

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  5. What is Azure Event Hub? - A Detailed Overview | Serverless360

    www.serverless360.com › blog › what-is-azure-event-hub
    • What Is Azure Event Hubs?
    • Understand The Building Blocks
    • Summary

    Before going into the technology side of things, let’s try to understand in layman terms why do we need this technology. The cloud consumption is getting more and more in many organizations, and there is a lot of new breed to Software as a Service (SaaS) solutions popping up every day. One of the common patterns you’ll see in the cloud adoption is how you are going to move data (either from on-premise or devices) into the cloud. Let’s take an example, you have some kind of monitoring service that monitors your server CPU utilization every 5 seconds, and you wanted to push this information to the cloud and store it in a persistent store like SQL Azure, MongoDB, Blob so on. The traditional way of implementing this solution will be, you would have written some kind of web service (ex: ASP.NET WebAPI), deployed it into the cloud (as web role or VM’s) and you would have constantly fired messages to that WebAPI endpoint. It may initially sound easy to implement such a solution, but over a...

    Let’s take a quick look at the top level architecture of Azure Event hubs and try to understand all the building blocks that make it powerful. There are the important terminologies we need to learn when it comes to Azure Event Hubs 1. EventData (message) 2. Publishers (or producers) 3. Partitions 4. Partition Keys / Partition Id 5. Receivers (or consumer) 6. Consumer Groups 7. Event Processor Host 8. Transport Protocol (HTTP, AMQP) 9. Throughput Units There is also a security aspect which we will cover later.

    Now we covered all the building blocks we saw in the original picture at the beginning of the article. Hopefully, this article would have given you all the bits and pieces requires to understand Azure Event Hubs. There are still a few topics I would like to cover that includes a security mechanism, metrics data, and many more. I’ll hopefully try to cover them in future articles.

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