What is DAPR

• DAPR stands for Distributed Application Runtime. It's an open-source, event driven runtime that helps developers build microservice and cloud native application.

• DAPR provides features as:

  • Service Discovery

  • Pub/Sub messaging

  • State management

  • Security

  • Retries

How DAPR Works?

• When a .NET application (or any application) is being executed, a DAPR sidecar is also being executed beside the actual application.

• Your actual application interacts with the DAPR using HTTP or GRPC calls.

Why DAPR?

• When building microservice application we usually come up with challenges like:

  • Service to Service communication

  • State consistency

  • Pub/Sub messaging

  • Observability

  • Retries

DAPR Architecture

• Each service will be having its own sidecar

• Service talk to each other using the sidecar communication

• Each sidecar handles discovery, retries...

Installing DAPR in Local Machine

• You can refer the offiicial website of dapr to download and install or refer the below commands.

• Before installig DAPR make sure the Docker is installed in you machine.

Step 1: Downlod DAPR

• Open powershell - run below command:

powershell -Command "iwr -useb https://raw.githubusercontent.com/dapr/cli/master/install/install.ps1 | iex"

Step 2: If installation fails or you see something as below,

Try executing below command and install dapr cli again (skip if download is successful)

Set-ExecutionPolicy RemoteSigned -Scope CurrentUser

Step 3: Verify the DAPR installation

dapr -h

Step 4: Initialize DAPR

dapr init

Step 5: Verify DAPR initialization is successfull

dapr --version