Key Concepts
KakaoCloud Pub/Sub is a non-installation message queue service for large-volume events and data analysis. You can classify and manage message data using topics and subscriptions.
Message
A message is data and properties delivered to a subscription.
Topic
A topic is an element that distinguishes a specific message or event type, and multiple subscriptions can be added to a single topic.
Default-Topic
Default-Topic is a topic provided by default in Pub/Sub, and provides event data generated in KakaoCloud, such as Cloud Trail.
Subscription
Messages published to a topic can be received through subscription. Subscriptions are provided in two types: Pull and Push.
| Type | Description |
|---|---|
| Pull | The way a user requests message transmission - Message transmission request and confirmation response |
| Push | The way messages are transmitted in Pub/Sub - Requires an endpoint (HTTP/HTTPS) server to receive messages |
Subscriber
A subject (subscriber) that receives and processes messages for a specific topic. A subscriber subscribes to a specific topic and receives notifications and processes messages whenever a new message is published to the topic.
Publisher
A subject (publisher) that creates data or events and publishes them to the Pub/Sub system. A publisher creates or collects messages on a specific topic and sends them to all subscribers who have subscribed to that topic.