gchacko/dapr-demos

Collection of personal Dapr demos (bindings, state, pub/sub, service-to-service invocation)

Dapr demos

Collection of personal Dapr demos.

Note, some of these demos require latest version of Dapr, Ingress gateway, Observability components, or cluster-local Redis and Mongo services. To create Kubernetes cluster with all these components on AKS, or quickly configure an existing cluster, consider the Dapr Cluster Setup utility.

• Bindings
  • Scheduling using cron - Using scheduler to execute service
  • Tweet stream - Subscribing to a Twitter even stream and publishing to a pub/sub topic
  • State change handler - RethinkDB state changes streamed into topic
• Eventing
  • gRPC event subscriber - Subscribing to topic and processing its events using gRPC service
  • HTTP event subscriber - Subscribing to topic and processing its events using HTTP service
• Services
  • gRPC echo service - gRPC service invocation example
  • HTTP echo service - HTTP service invocation example
  • Sentiment Scorer - Sentiment scoring serving backed by Azure Cognitive Service
• Integrations
  • Components in ACI - Dapr components as microservices on ACI without app
  • Component in Kubernetes - Dapr components as microservices on Kubernetes without app
  • Dapr Apps in ACI - Deploying apps with Dapr sidecar and components on ACI
  • Dapr with APIM - Dapr API using Azure API Management self-hosted gateway
  • Dapr API on Ingress - Expose Dapr API on Kubernetes Ingress Controller using NGINX
  • Dapr GitOps - GitHub Actions build pipeline for Dapr apps
• Solutions
  • Order cancellation - multiple Dapr service integrations with observability
  • Pipeline - Demos combining Twitter binding, Sentiment scoring, Multi Pub/Sub Processor, and WebSocket Viewer app
  • Fan-out - Single message source "broadcasted" to multiple, configurable targets (e.g. Redis PubSub, HTTP, gRPC)
  • Hardened - Example of multi-microservice app with tightly controlled access to secrets, components, and full invoking service identity validation
• Templates
  • Dapr gRPC Service - gRPC service template
  • Dapr HTTP Event Subscriber - Event subscriber HTTP service template
  • Dapr gRPC Event Subscriber - Event subscriber gRPC service template
  • dapr-http-cron-handler - Scheduled service development template

Disclaimer

This is my personal project and it does not represent my employer. While I do my best to ensure that everything works, I take no responsibility for issues caused by this code.

License

This software is released under the MIT