Spring Integration

https://docs.spring.io/spring-integration/reference/

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Overview of Spring Integration Framework

Spring Integration is motivated by the following goals:

• Provide a simple model for implementing complex enterprise integration solutions.
• Facilitate asynchronous, message-driven behavior within a Spring-based application.
• Promote intuitive, incremental adoption for existing Spring users.

Spring Integration is guided by the following principles:

• Components should be loosely coupled for modularity and testability.
• The framework should enforce separation of concerns between business logic and integration logic.
• Extension points should be abstract in nature (but within well-defined boundaries) to promote reuse and portability.

Main Components

Layered Architecture and Pipe-and-filters model are not mutually exclusive.

Message

flowchart TB
    subgraph Message
      Header
      Payload
    end

Message Channel

flowchart LR
    Producer -->|"send(Message)"| MC["Message Channel"]
    MC -->|"receive()"| Consumer

a message channel represents the pipe of Pipe-and-filters model.

in Spring Integration, pollable channels are capable of buffering Messages with a queue.

Message Endpoint

A Message Endpoint represents the “filter” of a pipes-and-filters architecture.