The Oracle Cloud Infrastructure Notifications service broadcasts messages to distributed components through a publish-subscribe pattern, delivering secure, highly reliable, low latency and durable messages for applications hosted on Oracle Cloud Infrastructure and externally. Use Notifications to get notified when event rules are triggered or alarms are breached, or to directly publish a message.
MESSAGE
The content that is published to a topic. Each message is delivered at least once per subscription. Every message sent out as email contains a link to unsubscribe from the related topic.
SUBSCRIPTION
An endpoint for a topic. Published messages are sent to each subscription for a topic. For supported subscription protocols.
TOPIC
A communication channel for sending messages to the subscriptions in the topic. Each topic name is unique across the tenancy.