Activemq

activemq topic

activemq topic

ActiveMQ topic is a pipeline of messages where a message comes in and goes to every subscriber. Both ActiveMQ queue and ActiveMQ topic are places where messages are sent. The difference is in who receives the message. The ActiveMQ queue is a dynamic queue.

  1. What is a virtual topic?
  2. How do I create a topic in ActiveMQ?
  3. What is ActiveMQ used for?
  4. What is topic and queue?
  5. How does ActiveMQ topic work?
  6. What is JMS topic?
  7. What is Activemqconnectionfactory?
  8. How do I view ActiveMQ messages?
  9. How do I start ActiveMQ on Windows?
  10. What is ActiveMQ broker?
  11. Is ActiveMQ open source?

What is a virtual topic?

Virtual topics are a combination of topics and queues. Producers will write messages to a topic while listeners will consume from their own queue. ActiveMQ will copy and duplicate each message from the topic to the actual consumer queues. Even if a consumer is offline, no messages will be lost. ...

How do I create a topic in ActiveMQ?

That's where ActiveMQ comes in.

  1. Step 1: Download and start ActiveMQ. ...
  2. Step 2: Download the JMS Example file. ...
  3. Step 4: Open three additional console windows. ...
  4. Step 3: Do the Maven Install. ...
  5. Step 4: Start the JMS Consumers and Producer for Topic-based Messaging. ...
  6. Step 5: Send JMS messages to the Topic.

What is ActiveMQ used for?

What is ActiveMQ (Active Message Queuing)? ActiveMQ is an open source protocol developed by Apache which functions as an implementation of message-oriented middleware (MOM). Its basic function is to send messages between different applications, but includes additional features like STOMP, JMS, and OpenWire.

What is topic and queue?

Queue is JMS managed object used for holding messages waiting for subscribers to consume. ... Topic is that all subscribers to a topic receive the same message when the message is published.

How does ActiveMQ topic work?

ActiveMQ topic is a pipeline of messages where a message comes in and goes to every subscriber. Both ActiveMQ queue and ActiveMQ topic are places where messages are sent. The difference is in who receives the message. The ActiveMQ queue is a dynamic queue.

What is JMS topic?

The term JMS topic is used to refer to the JMS destination (an instance of javax. ... JMS applications can publish messages to, and subscribe to messages from, JMS topics. Subscribing applications can usually receive messages published to a topic only when the subscriber is connected to the server.

What is Activemqconnectionfactory?

A ConnectionFactory is an an Administered object, and is used for creating Connections. This class also implements QueueConnectionFactory and TopicConnectionFactory. You can use this connection to create both QueueConnections and TopicConnections. See Also: ConnectionFactory , Serialized Form.

How do I view ActiveMQ messages?

If you're just looking for a particular message, and manual will do, you can see (I think all, at least some of) the messages and their contents for an activemq by clicking on the "RSS feed" button in the UI.

How do I start ActiveMQ on Windows?

Setting up ActiveMQ as a Windows Service

  1. Run the batch file $activemq\bin\win64\InstallService. bat. This will install the ActiveMQ service. ...
  2. Open Services (Start -> Run -> services. msc).
  3. Open the properties of the ActiveMQ service.
  4. Verify that "Startup type" is set to Automatic.
  5. Start the Service.

What is ActiveMQ broker?

Apache ActiveMQ is an open source message broker written in Java together with a full Java Message Service (JMS) client. It provides "Enterprise Features" which in this case means fostering the communication from more than one client or server.

Is ActiveMQ open source?

ActiveMQ. Apache ActiveMQ® is the most popular open source, multi-protocol, Java-based messaging server.

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