🔗 Dapr Bindings Overview Summary
Bindings in Dapr provide a way for applications to interact with external systems—both to ingest events (input bindings) and to invoke external systems (output bindings)—using a simple, consistent API.
🧩 Types of Bindings
- Input Bindings
- Trigger the application by receiving events from external systems (e.g., message queues, databases, cloud services).
- Dapr invokes a specified endpoint in the app when a new event arrives.
- Output Bindings
- Allow the app to send data to external systems.
- Can be invoked using Dapr SDKs or HTTP/gRPC APIs.
🔄 How Bindings Work
- Input: External system → Dapr → App
- Output: App → Dapr → External system
- Bindings are configured via a component YAML file defining the type (e.g., Kafka, HTTP, Cron) and metadata.
🧰 Use Cases
- Trigger functions on a schedule (e.g.,
cron) - Send messages to systems like Kafka, MQTT
- Respond to cloud events from AWS, Azure, GCP
- Connect with databases, queues, or custom services
✅ Benefits
- Abstracts complex integrations
- Uniform API across different services
- Event-driven programming with minimal boilerplate
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