Distributed Application Runtime Dapr version 1.0 #Dapr #Azure #Kubernetes #DevOps #Developers #Microservices #AzOps   Leave a comment

Dapr is an open source, portable, event-driven runtime that makes it easy for developers to build resilient, microservice stateless and stateful applications that run on the cloud and edge. Dapr embraces the diversity of all programming languages and developer frameworks and simplifies building applications.

https://docs.dapr.io/getting-started/

Dapr building blocks

 

  • Service Invocation – Resilient service-to-service invocation enables method calls, including retries, on remote services wherever they are running in the supported hosting environment.
  • State management – With state management for key/value pairs, long running, highly available, stateful services can be easily written, alongside stateless services in the same application. The state store is pluggable and can include Azure Cosmos or Redis, with others such as AWS DynamoDB on the component roadmap.
  • Publish and subscribe messaging between services – Publishing events and subscribing to topics between services enables event-driven architectures to simplify horizontal scalability and make them resilient to failure.
  • Event driven resource bindings – Resource bindings and triggers build further on event-driven architectures for scale and resiliency by receiving and sending events to and from any external resources such as databases, queues, file systems, blob stores, webhooks, etc. For example, your code can be triggered by a message on an Azure EventHub service and write data to Azure CosmosDB.
  • Virtual actors – A pattern for stateless and stateful objects that make concurrency simple with method and state encapsulation. Dapr provides many capabilities in its virtual actor runtime including concurrency, state, life-cycle management for actor activation/deactivation and timers and reminders to wake up actors.
  • Distributed tracing between services – Easily diagnose and observe inter-service calls in production using the W3C Trace Context standard and push events to tracing and monitoring systems.

 

image

 

You can read more about Dapr at http://dapr.io, get started with code and samples at https://github.com/dapr/dapr and reach out on gitter.im/Dapr or Twitter @daprdev.

 

Getting started with Dapr is easy and you can start with a few steps described below

How to get up and running with Dapr in minutes

The following steps in this guide are:

  1. Install the Dapr CLI
  2. Initialize Dapr
  3. Use the Dapr API
  4. Configure a component
  5. Explore Dapr quickstarts

 

 

powershell -Command "iwr -useb https://raw.githubusercontent.com/dapr/cli/master/install/install.ps1 | iex"
 
image
 
Important is to close the powershell window and reopen this. Else the module won’t be active
 
 
type dapr
 
 
image
 
Open Powershell 
 
type dapr
 
 

dapr

         __
    ____/ /___ _____  _____
   / __  / __ ‘/ __ \/ ___/
  / /_/ / /_/ / /_/ / /
  \__,_/\__,_/ .___/_/
              /_/

======================================================
A serverless runtime for hyperscale, distributed systems

Usage:
  dapr [command]

Available Commands:
  completion     Generates shell completion scripts
  components     List all Dapr components
  configurations List all Dapr configurations
  dashboard      Start Dapr dashboard
  help           Help about any command
  init           Setup dapr in Kubernetes or Standalone modes
  invoke         Invokes a Dapr app with an optional payload (deprecated, use invokePost)
  invokeGet      Issue HTTP GET to Dapr app
  invokePost     Issue HTTP POST to Dapr app with an optional payload
  list           List all Dapr instances
  logs           Gets Dapr sidecar logs for an app in Kubernetes
  mtls           Check if mTLS is enabled in a Kubernetes cluster
  publish        Publish an event to multiple consumers
  run            Launches Dapr and (optionally) your app side by side
  status         Shows the Dapr system services (control plane) health status.
  stop           Stops multiple running Dapr instances and their associated apps
  uninstall      Removes a Dapr installation

Flags:
  -h, –help      help for dapr
      –version   version for dapr

Use “dapr [command] –help” for more information about a command.
subcommand is required

 
 
dapr init
 

PS C:\Windows\system32> dapr init
Making the jump to hyperspace…
Downloading binaries and setting up components…
Unable to find image ‘openzipkin/zipkin:latest’ locally
latest: Pulling from openzipkin/zipkin
docker: no matching manifest for windows/amd64 10.0.17763 in the manifest list entries.
See ‘docker run –help’.

 
 
 

Quickstarts and Samples

 
You can try out the Dapr quickstarts right here to begin your own personal journey into Microservices on Azure. 
 
 
 

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Posted February 17, 2021 by Robert Smit [MVP] in Azure

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