Multicast Ordering FIFO Ordering algorithm in distributed systems-Maker Activemq Client

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2 months ago

Multicast Ordering FIFO Ordering algorithm in distributed systems-Maker Activemq Client

https://www.gyanodhan.com/video/7A2.%20Computer%20Science/Distributed%20Computing/317.%20Day%2004%20Part%2002%20Multicast%20Ordering%20FIFO%20Orderingalgorithm%20makeractivemq%20client.mp4

Contents

1 Multicast Ordering and FIFO Ordering in Distributed Systems – ActiveMQ Client Implementation
2 What is Multicast Ordering?
3 Definition
4 Types of Multicast Ordering
5 What is FIFO Ordering?
6 Definition
7 FIFO Ordering in ActiveMQ
- 7.1 Example: Java Implementation (ActiveMQ FIFO Queue)
- 7.2 FIFO Consumer
8 Multicast Ordering in ActiveMQ (Publish/Subscribe)
- 8.1 Example: Java Implementation (Multicast Topic in ActiveMQ)
- 8.2 Multicast Subscriber
9 Key Takeaways

Multicast Ordering and FIFO Ordering in Distributed Systems – ActiveMQ Client Implementation

In distributed systems, message ordering is crucial for maintaining consistency across different nodes. Two common ordering guarantees in message passing systems are Multicast Ordering and FIFO Ordering. These concepts are widely used in message brokers like ActiveMQ, which supports reliable message delivery across distributed components.

What is Multicast Ordering?

Definition

Multicast ordering ensures that all nodes in a distributed system receive messages in the same order when sent to a group. This is essential for applications requiring synchronized message delivery across multiple subscribers.

Types of Multicast Ordering

Causal Ordering – Ensures messages are received in the order they were causally related.
Total Ordering – Guarantees that all messages are received in the same order across all nodes.
FIFO Ordering – Ensures that messages from the same sender arrive in the order they were sent.

What is FIFO Ordering?

Definition

FIFO (First In, First Out) Ordering ensures that messages sent by a single sender are received in the same order by all receivers.

Example: If Node A sends messages M1 → M2 → M3, all receivers must receive them in the same order (M1 → M2 → M3).

Challenge: If messages take different network paths, network delays can disrupt FIFO ordering. Middleware like ActiveMQ ensures this ordering using message queues.

ActiveMQ Implementation for FIFO and Multicast Ordering

Apache ActiveMQ is a message broker that supports FIFO ordering and multicast messaging using topics and queues.

FIFO Ordering in ActiveMQ

FIFO is guaranteed in Queues (point-to-point communication).
Each message sent by a producer is delivered exactly once to a consumer in order.

Example: Java Implementation (ActiveMQ FIFO Queue)

import org.apache.activemq.ActiveMQConnectionFactory;

import javax.jms.*;

public class FIFOProducer {
    public static void main(String[] args) throws JMSException {
        ConnectionFactory factory = new ActiveMQConnectionFactory("tcp://localhost:61616");
        Connection connection = factory.createConnection();
        connection.start();
        
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Queue queue = session.createQueue("FIFO_QUEUE");

        MessageProducer producer = session.createProducer(queue);
        producer.setDeliveryMode(DeliveryMode.PERSISTENT);

        for (int i = 1; i <= 3; i++) {
            TextMessage message = session.createTextMessage("Message " + i);
            producer.send(message);
            System.out.println("Sent: " + message.getText());
        }

        connection.close();
    }
}

FIFO Consumer

public class FIFOConsumer {
    public static void main(String[] args) throws JMSException {
        ConnectionFactory factory = new ActiveMQConnectionFactory("tcp://localhost:61616");
        Connection connection = factory.createConnection();
        connection.start();

        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Queue queue = session.createQueue("FIFO_QUEUE");

        MessageConsumer consumer = session.createConsumer(queue);
        while (true) {
            TextMessage message = (TextMessage) consumer.receive();
            if (message != null) {
                System.out.println("Received: " + message.getText());
            }
        }
    }
}

Ensures FIFO message delivery to consumers.

Multicast Ordering in ActiveMQ (Publish/Subscribe)

Uses Topics instead of Queues.
Messages are delivered in the same order to all subscribers.

Example: Java Implementation (Multicast Topic in ActiveMQ)

public class MulticastProducer {
    public static void main(String[] args) throws JMSException {
        ConnectionFactory factory = new ActiveMQConnectionFactory("tcp://localhost:61616");
        Connection connection = factory.createConnection();
        connection.start();

        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Topic topic = session.createTopic("MULTICAST_TOPIC");

        MessageProducer producer = session.createProducer(topic);

        for (int i = 1; i <= 3; i++) {
            TextMessage message = session.createTextMessage("Multicast Message " + i);
            producer.send(message);
            System.out.println("Sent: " + message.getText());
        }

        connection.close();
    }
}

Multicast Subscriber

public class MulticastConsumer {
    public static void main(String[] args) throws JMSException {
        ConnectionFactory factory = new ActiveMQConnectionFactory("tcp://localhost:61616");
        Connection connection = factory.createConnection();
        connection.start();

        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Topic topic = session.createTopic("MULTICAST_TOPIC");

        MessageConsumer consumer = session.createConsumer(topic);
        while (true) {
            TextMessage message = (TextMessage) consumer.receive();
            if (message != null) {
                System.out.println("Received: " + message.getText());
            }
        }
    }
}

Ensures all subscribers receive messages in the same order.

Key Takeaways

FIFO Ordering ensures that messages from a single sender are received in order.
Multicast Ordering guarantees that all receivers get messages in the same order in a publish-subscribe system.
ActiveMQ provides built-in support for FIFO ordering (Queues) and Multicast ordering (Topics).

ActiveMQ makes distributed messaging efficient and reliable, ensuring order preservation in real-time applications like finance, IoT, and cloud systems.