Pub/Sub Vs. Point to Point Messaging
Below are the differences between Pub/Sub and Point to Point Messaging:
Aspect | Pub/Sub Messaging | Point-to-Point Messaging |
---|---|---|
Message Delivery | Messages are broadcast to multiple subscribers | Messages are delivered to a single receiver |
Subscriber Knowledge | Publishers do not need to know about subscribers | Sender needs to know the receiver |
Scalability | Scalable, as new subscribers can be added without affecting publishers | Less scalable, as each message is sent directly to a specific receiver |
Coupling | Loosely coupled, as publishers and subscribers are decoupled | Tightly coupled, as sender and receiver are directly connected |
Use Case | Suitable for broadcasting messages to multiple recipients | Suitable for one-to-one communication |
Example Technology | Google Cloud Pub/Sub, Amazon SNS/SQS | JMS, AMQP, RabbitMQ, Kafka |
What is Pub/Sub Architecture?
Consider a scenario of synchronous message passing. You have two components in your system that communicate with each other. Let’s call the sender and receiver. The receiver asks for a service from the sender and the sender serves the request and waits for an acknowledgment from the receiver.
- There is another receiver that requests a service from the sender. The sender is blocked since it hasn’t yet received any acknowledgment from the first receiver.
- The sender isn’t able to serve the second receiver which can create problems. To solve this drawback, the Pub-Sub model was introduced.
Important Topics for the Pub/Sub Architecture
- What is Pub/Sub Architecture?
- Components of Pub/Sub Architecture?
- How does Pub/Sub Architecture work?
- Real-World Example of Pub/Sub Architecture
- Use-cases of Pub/Sub Architecture
- When to Use the Pub/Sub Architecture
- When Not to Use the Pub/Sub Architecture
- How Scalable and Secure is Pub/Sub Architecture?
- Benefits of Pub/Sub Architecture
- Challenges of Pub/Sub Architecture
- Pub/Sub Vs. Point to Point Messaging