Messaging Patterns

The Request-Reply pattern is a fundamental communication pattern where one party (the client) sends a request to another party (the service) and waits for a response (the reply). It’s a synchronous interaction style, meaning the client blocks until the reply is received. This pattern is commonly used in …

Read More

The Dead Letter Queue (DLQ) pattern is a mechanism for handling messages that cannot be processed successfully by a consuming application. Instead of being lost or endlessly retried, these problematic messages are moved to a separate queue – the DLQ – for later investigation and potential reprocessing. This ensures …

Read More

The Point-to-Point Channel pattern facilitates direct, synchronous or asynchronous communication between two specific endpoints. It ensures that a message sent from one point is delivered to and processed by exactly one other point. This provides a focused communication pathway, differing from publish-subscribe models …

Read More

The Publish-Subscribe pattern defines one-to-many dependencies between objects. A publisher (or event source) doesn’t know about its subscribers. Instead, it publishes events to a broker (or message queue), and subscribers express interest in specific events by registering with the broker. When an event occurs, the …

Read More

The Publish-Subscribe Channel pattern decouples message senders (Publishers) from message receivers (Subscribers) by introducing a message channel. Publishers don’t need to know which Subscribers are interested in the messages, and Subscribers don’t need to know who is publishing the messages. Instead, Publishers send …

Read More