System Design Fundamentals
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Message Queues vs. Service Bus

Once services stop calling each other directly, something in the middle has to carry the messages. There are two shapes for that middle piece: a simple pipe that holds messages until a worker takes them (a message queue), or a hub that also routes, transforms, and orchestrates them (a service bus).

The difference is how much intelligence lives in the middle. A queue moves messages and stays out of the way. A bus understands the messages and acts on them.

Message Queues

A message queue is a buffer that holds messages until a consumer is ready to process them

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Jakub Bialas

Jakub Bialas

· 5 months ago

Sounds like a Service Bus is just the old name for an API Gateway

Sourav Singh

Sourav Singh

· 3 years ago

Is there any example showcasing a use of Service Bus

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