š§© Enterprise Integration Patterns (EIP)
Enterprise Integration Patterns (EIP) are design solutions for integrating different systems or applications, especially when they communicate asynchronously using messages.
š§ Why EIP Matters:
In large enterprises, systems are often distributed, heterogeneous, and need to talk to each other reliably ā EIPs help solve that.
š¦ Core Concepts:
| Concept | Explanation |
|---|---|
| Message | A unit of data sent between systems |
| Channel | A medium (like a queue/topic) to carry messages |
| Router | Directs messages based on rules or content |
| Transformer | Changes the format/content of a message |
| Endpoint | Sender or receiver of messages |
š Common EIP Patterns (with simple meaning):
| Pattern | Purpose |
|---|---|
| Message Channel | A pipe for sending/receiving messages |
| Message Router | Routes messages based on conditions |
| Message Filter | Removes unwanted messages |
| Content Enricher | Adds more data to a message |
| Message Translator | Converts message format (e.g., XML ā JSON) |
| Aggregator | Combines multiple messages into one |
| Splitter | Splits a message into multiple parts |
| Publish-Subscribe | Sends one message to multiple subscribers |
| Dead Letter Channel | Handles undeliverable messages |
š Real-Life Analogy:
Think of EIPs like traffic rules for messages ā deciding where to go, how to go, and what to do if something goes wrong.
š Tools that Implement EIP:
- Apache Camel
- Spring Integration
- MuleSoft
- Kafka Streams (to some extent)