On July 17, 2019, we released Zeebe 0.20.0, our first production-ready Zeebe release. In this webinar, we covered: • What "production ready" means • The new Zeebe Community License • A step-by-step Zeebe and Operate demo • Zeebe internals and how Zeebe works "under the hood" • Zeebe in the cloud and Zeebe enterprise support • The near-term Zeebe roadmap

1. Zeebe Mid-Year Update
Zeebe 0.20.0: The First Production-Ready Release

2. Who are we?
Mike Winters
Product Manager
Daniel Meyer
CTO
Josh Wulf
Developer Advocate

3. Logistical Notes
● Please ask questions! You can submit them via GoToWebinar.
● We’ll email a recording of the webinar within a week.

4. ● Submit an answer in GoToWebinar
● We’ll share the results in just a second
Poll: How familiar are you with Zeebe?

5. Zeebe 0.20.0: Our first production-ready
Zeebe release!
(What does “production ready” mean?)

6. • Supports the use case via BPMN
• Scalable on K8S
• Fault tolerant w/ no database
• Observable
What does “production readiness” mean for Zeebe?

7. Why 0.20.0 and not 1.0?

8. Starting with 0.20.0, the Zeebe Broker is released under the Zeebe Community License 1.0.
Clients remain under Apache License 2.0
The Zeebe Community License is comparable to the Creative Commons licenses:
● Users can use, modify and distribute Zeebe freely (including for commercial purposes)
● Restriction: providing Zeebe as a “Commercial Workflow Service” in the cloud is not allowed
More information:
● Blog post
● Zeebe License Overview and FAQ
The Zeebe Community License

9. From https://zeebe.io/blog/2019/07/introducing-zeebe-community-license-1-0/

10. Why Zeebe?
What problem does it solve?

11. Challenges with Microservices Architectures

12. In a User’s Words
Wait, what’s actually happening?!

13. What is Zeebe?

14. Define A Workflow: Multiple Steps, Multiple Services

15. External Services: Requesting Work, Completing Work

16. Why Zeebe?
● A workflow engine that:
○ Scales horizontally (no DB required)
○ Integrates with modern (“cloud-native”) components
○ Executes workflows defined in BPMN
○ ...and more!

17. Demo Time!
(Developing a Workflow with Zeebe)
This demo on GitHub

18. How Zeebe Works

19. Zeebe Cluster
Zeebe is built for the Cloud
Zeebe provides cloud native building blocks that are decoupled and can be scaled individually
Broker
Broker
Broker
Custom Data Lake / Audit Log
- Database
- Elasticsearch
- Kafka
- ...
GRPCGateway
Kubernetes
Operate Other Apps
Streaming
Exporter
Microservices /
Apps
Event Bus / Messaging System
Connector
(Http, …)
Workflow Clients Event Processors

20. Zeebe is built for Microservices
Broker
Broker
Broker
Zeebe Cluster
GRPCGateway
Microservices / Apps
Zeebe
Client
Option 1: Embed Zeebe Client directly into Microservice
List of available clients

21. Zeebe is built for Microservices
Broker
Broker
Broker
Zeebe Cluster
GRPCGateway
Http Microservice /
App
Option 2: Use Generic Connector (Http, AWS Lambda, …)
Http Microservice /
App
Http Microservice /
App
Http
Connector
Example on Github

22. Zeebe is built for Microservices
Broker
Broker
Broker
Zeebe Cluster
GRPCGateway
Microservice /
App
Event Bus / Messaging System
(Kafka, RabbitMQ, ..)
Microservice /
App
Microservice /
App
Option 3: Zeebe as State Machine in Event Driven
Microservices Architecture
Pub / Sub
Read more in this Blogpost

23. Zeebe brings Distributed Systems to Workflow
Workflow
Engine
Workflow
Engine
Workflow
Engine
Workflow Engines until now: shared, mutable state in a database
Database

24. Zeebe brings Distributed Systems to Workflow
Workflow
Engine
Workflow
Engine
Workflow
Engine
The Database becomes a bottleneck
Database

25. Zeebe brings Distributed Systems to Workflow
Workflow
Engine
Workflow
Engine
Workflow
Engine Database
Zeebe: removes the database

26. Zeebe brings Distributed Systems to Workflow
Broker
Broker
BrokerGRPCGateway
Read More in Bernd’s Post
Clients
Commands
/ Responses
Applications
Events
Zeebe Cluster
Zeebe:
- Interprets Workflow Execution as Stream Processing
- Non-shared & replicated, immutable state
- Builds on top of Gossip, Raft and Hash-based
distribution

27. Zeebe brings Distributed Systems to Workflow
Broker
Broker
BrokerGRPCGateway
Read More in Bernd’s Post
Clients
Commands
/ Responses
Applications
Events
Zeebe Cluster
Zeebe:
- Interprets Workflow Execution as Stream Processing
- Non-shared & replicated, immutable state
- Builds on top of Gossip, Raft and Hash-based
distribution

28. Command
Zeebe brings Distributed Systems to Workflow
Broker
Broker
BrokerGRPCGateway
Read More in Bernd’s Post
Clients Applications
Events
Zeebe Cluster
Client sends Command
and expects back a Response

29. Zeebe brings Distributed Systems to Workflow
Broker
Broker
BrokerGRPCGateway
Read More in Bernd’s Post
Applications
Events
Zeebe Cluster
Clients
Command
Gateway needs to route command to correct Broker, taking into
account topology

30. Zeebe brings Distributed Systems to Workflow
Broker
Broker
BrokerGRPCGateway
Read More in Bernd’s Post
Applications
Events
Zeebe Cluster
Clients
Gossip: membership
Hash-based distribution
Command

31. Zeebe brings Distributed Systems to Workflow
Broker
Broker
BrokerGRPCGateway
Read More in Bernd’s Post
Applications
Events
Zeebe Cluster
Clients
Gossip: membership
Hash-based distribution
Once the command gets to the correct broker, it is written into an
append-only log / stream
Command

32. Zeebe brings Distributed Systems to Workflow
Broker
Broker
BrokerGRPCGateway
Read More in Bernd’s Post
Applications
Events
Zeebe Cluster
Clients
Replication (RAFT)
Gossip: membership
Hash-based distribution
Using the RAFT algorithm, the log / stream is replicated to other
brokers for fault tolerance.
Zebe uses Atomix for this
Command

33. Zeebe brings Distributed Systems to Workflow
Broker
Broker
BrokerGRPCGateway
Read More in Bernd’s Post
Applications
Events
Zeebe Cluster
Clients
Replication (RAFT)
Materialized State in
RocksDB
Gossip: membership
Hash-based distribution
Once the command is replicated & committed, it is processed by
applying it to the materialized state in Rocks DB.
This state is local to the broker and can be re-created from the log.
Command

34. Zeebe brings Distributed Systems to Workflow
Broker
Broker
BrokerGRPCGateway
Read More in Bernd’s Post
Applications
Events
Zeebe Cluster
Clients
Response
Replication (RAFT)
Materialized State in
RocksDB
Gossip: membership
Hash-based distribution
Now a response can be sent to the client.

35. Zeebe brings Distributed Systems to Workflow
Broker
Broker
BrokerGRPCGateway
Read More in Bernd’s Post
Applications
Zeebe Cluster
Clients
Replication (RAFT)
Materialized State in
RocksDB
Events
Gossip: membership
Hash-based distribution
In addition, after applying the command, an event is created,
reporting on whether the command succeeded or failed.
This event is written into another log / stream that is exported to
external systems.
Response

36. Get Involved
• Slack
• Forum
• GitHub
• Awesome Zeebe

37. Community Contributions

38. Zeebe-Node: Node.js Client
Zeebe-node on GitHub

39. Workit: Node.js Camunda / Zeebe Client
Workit on GitHubOlivier Albertini

40. Zeebest: Rust Client
Zeebest on GitHub
Mackenzie Clark

41. Roadmap and next steps

42. Roadmap: What we are working on next
● Extend BPMN support
○ Multiple Instance Task,
○ Error Event,
○ Event Subprocess
● Improved resource efficiency
○ Long-polling job worker support,
○ Backpressure support in Gateway
API
● Support for latest Java releases
● Out-of the box integration with Apache
Kafka
See also: https://zeebe.io/roadmap/

43. Coming Soon: Zeebe in the Cloud
We are working on providing Zeebe as a fully
managed cloud service: we run Zeebe so that
you can focus on implementing workflows.
Features:
- Deploy hosted Zeebe Clusters
- Deploy hosted Operate
- Configure out-of-the box connectors
(Http, Kafka, AWS Lambda...)
Signup for Beta (planned for September 2019)

44. Available now: Zeebe Enterprise
Starting a new project with Zeebe?
Subscribe to the Zeebe Enterprise Edition so
that we can help you make your project a
success.
Zeebe Enterprise Edition provides
● Production License for Operate
● World class production support by
Camunda
● Access to training and Consulting Services
from Camunda
Contact us for more details
Some Camunda Customers*
* Using Camunda BPM

45. Next Steps
● https://zeebe.io -> “Get Started”
● https://forum.zeebe.io
● Send an email to feedback@zeebe.io

46. Thanks for joining!
Now ask us questions :)