Build distributed applications with ease using Dapr - Dev070 Meetup

Transcript

1. Dapr 101: start building distributed apps with ease

2. 2 Azure MVP Dapr Community Manager ❤️ pixel art Marc

   Duiker Sr Dev Advocate [email protected]

3. 3

4. 4 Demos! What is Dapr? When to use Dapr? Why

   use Dapr? Q&A + swag

5. What is Dapr? 5

6. 6 E-commerce system State Management Email Payment Front-end Shipping Checkout

   Inventory Cart Internet Queue I just want to trace my calls end-to-end. How do I encrypt calls with ongoing cert rotation? How do applications discover and call each other? How do I handle failed calls and perform retries? How do I secure access to my data layer? How do I handle state conflicts from multiple apps? How do I measure latency on my database? How do I orchestrate business logic transactions? How do I send messages to many applications? Developer challenges

7. 7 Distributed application runtime

8. Dapr is a portable, event- driven, runtime for building distributed

   applications across cloud and edge. 8

9. 9 virtual or physical machines

10. 10 Why use Dapr?

11. Speeds up microservice development by providing a common set of

    building block APIs. 11

12. 12 Service invocation State Management Publish & subscribe Bindings (input

    & output) Actors Secret Stores Configuration Observability Workflows Distributed Lock Building block APIs

13. 13 HTTP/gRPC Dapr API Dapr sidecar Application App

14. 14 POST http://localhost:3500/v1.0/invoke/cart/method/order GET http://localhost:3500/v1.0/state/inventory/item67 POST http://localhost:3500/v1.0/publish/order GET http://localhost:3500/v1.0/secrets/vault/password42 POST

    http://localhost:3500/v1.0-alpha1/workflows/dapr/businessprocess/1234/start HTTP/gRPC Dapr API App

15. 15 Python Java Script Java Go Client SDKs C#

16. 16 10th largest CNCF project Submitted to CNCF Nov 2021

    Incubation maturity level www.cncf.io/projects/dapr/ Dapr project

17. 17

18. 18 20.5K GitHub stars 2.5K Contributors +1M Docker pulls /

    month 290k Unique doc views / month 5.9k Discord members 18

19. 19 Contributing organizations

20. 20 Dapr users

21. 21 Bindings Configuration State Management Publish & subscribe Observability Actors

    Secret Stores Workflows Distributed Lock Components AWS DynamoDB Azure CosmosDB GCP Firebase Redis Cassandra AWS SQS Azure Service Bus GCP Pub/Sub Redis RabbitMQ AWS Secrets mngr Azure KeyVault GCP Secret mngr HashiCorp Vault Kubernetes Secrets AWS DynamoDB Azure CosmosDB Redis MongoDB Postgres AWS S3 Azure Storage GCP Storage Twilio Kafka Jeager Zipkin Prometheus App Insights Datadog Redis Redis Azure App Configuration Dapr Workflow Building Block APIs

22. 22 App CosmosDB

23. 23 Sidecar App CosmosDB metadata: name: mystorage spec: type: state.azure.cosmosdb

    metadata: - name: value: state.save() state.get() yaml

24. 24 Redis metadata: name: mystorage spec: type: state.redis metadata: -

    name: value: Sidecar App state.save() state.get() yaml

25. 25 Dapr APIs are cloud agnostic. Do they implement the

    lowest common denominator?

26. 26 Building block APIs are basic, by design. Dapr adds

    a lot of functionality.

27. 27 https://docs.dapr.io/reference/components-reference/supported-state-stores/

28. 28 https://docs.dapr.io/developing-applications/building-blocks/pubsub/pubsub-cloudevents/

29. 29

30. 30 Unified API with flexibility at the component level.

31. 31 Is Dapr a service mesh?

32. 32 No.

33. 33 Dapr & service mesh similarities: Distributed Tracing Secure Communication

    Metric Collection

34. 34 Developer centric docs.dapr.io/concepts/service-mesh/ Building block APIs & components Infrastructure

    centric Service mesh ≠ Network traffic & Routing

35. When to use Dapr? 35

36. 36 You are in a large organisation with many different

    teams or tech stacks.

37. Greenfield projects: postpone your architecture decisions. 37

38. When not to use Dapr? 38

39. 39 If your team is allergic to containers & Kubernetes

    ;)

40. Building block demos 40 github.com/dapr/quickstarts

41. 41 Service invocation Checkout Order processor POST

42. 42 Publish & subscribe Checkout Order processor

43. 43 State Management Redis Order processor

44. 44 The workflow engine

45. 45 Your Workflow App Workflow engine Append-only state store

46. 46 Your Workflow App Contains definition of a sequence of

    activities Schedules and manages activity executions (incl resiliency) Contains workflow state, input and outputs of activities

47. 47 Workflows Activity 1 Activity 3 Activity 2 End Start

    Chaining

48. 48 Workflows Activity 1 Activity 3 Activity 2 End Start

    Fan-out fan-in

49. Join the Dapr Discord! bit.ly/dapr-discord