message-broker
An intermediary computer program module that translates a message from the formal messaging protocol of the sender to the formal messaging protocol of the receiver.
A message broker allows different systems to communicate with each other asynchronously. Instead of one service calling another and waiting for a response, it sends a 'message' to the broker. The broker then delivers that message to the receiver whenever it's ready, ensuring that messages aren't lost even if a system goes offline.
graph LR
Center["message-broker"]:::main
Rel_websockets["websockets"]:::related -.-> Center
click Rel_websockets "/terms/websockets"
Rel_rabbitmq["rabbitmq"]:::related -.-> Center
click Rel_rabbitmq "/terms/rabbitmq"
Rel_websocket["websocket"]:::related -.-> Center
click Rel_websocket "/terms/websocket"
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classDef pre fill:#0f172a,stroke:#3b82f6,color:#94a3b8,rx:5,ry:5;
classDef child fill:#0f172a,stroke:#10b981,color:#94a3b8,rx:5,ry:5;
classDef related fill:#0f172a,stroke:#8b5cf6,stroke-dasharray: 5 5,color:#94a3b8,rx:5,ry:5;
linkStyle default stroke:#4b5563,stroke-width:2px;
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A message broker is like a post office. If you want to talk to your friend but they aren't home, you write a letter and give it to the post office. The post office keeps the letter safe and gives it to your friend as soon as they get back. You don't have to wait outside their house all day!