Dapr 101:
start building
distributed apps
with ease
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Azure MVP
Dapr Community
Manager
❤️ pixel art
Marc Duiker
Sr Dev Advocate
[email protected]
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Demos!
What is
Dapr?
When to
use Dapr?
Why use
Dapr?
Q&A +
swag
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What is Dapr?
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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
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Distributed
application
runtime
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Dapr is a portable, event-
driven, runtime for building
distributed applications across
cloud and edge.
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virtual or
physical machines
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Why use Dapr?
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Speeds up microservice
development by providing
a common set of building
block APIs.
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Service
invocation
State
Management
Publish &
subscribe
Bindings
(input & output)
Actors Secret
Stores
Configuration
Observability
Workflows
Distributed Lock
Building block APIs
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HTTP/gRPC
Dapr API
Dapr sidecar
Application
App
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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
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Python
Java
Script
Java
Go
Client
SDKs
C#
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10th largest
CNCF project
Submitted
to CNCF
Nov 2021
Incubation
maturity
level
www.cncf.io/projects/dapr/
Dapr project
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Unified API with flexibility
at the component level.
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Is Dapr a service mesh?
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No.
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Dapr & service mesh similarities:
Distributed
Tracing
Secure
Communication
Metric
Collection
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Developer centric
docs.dapr.io/concepts/service-mesh/
Building block APIs & components
Infrastructure centric
Service
mesh
≠
Network traffic & Routing
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When to use Dapr?
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You are in a large organisation
with many different teams or
tech stacks.
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Greenfield projects: postpone
your architecture decisions.
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When not to use Dapr?
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If your team is allergic to
containers & Kubernetes ;)
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Building block demos
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github.com/dapr/quickstarts
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Service
invocation
Checkout
Order
processor
POST
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Publish &
subscribe
Checkout
Order
processor
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State
Management
Redis
Order
processor
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The workflow engine
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Your
Workflow
App
Workflow
engine
Append-only
state store
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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