This document discusses strategic design approaches for building cloud native architectures using microservices and event-driven design principles. It covers defining service boundaries, inter-service communication maturity levels from messages to event-driven approaches, using CQRS patterns, and techniques for discovering bounded contexts like event storming. The document aims to help define how services can efficiently communicate and store application state in cloud native applications while balancing complexity, scalability, and eventual consistency tradeoffs.

1. Strategic Design for Cloud
Native Architecture
Еvent driven approach for
microservices architecture

2. What this presentation is not about….
High available, fault tolerance applications
Provisioning cloud infrastructure
Frameworks and tools
Monitoring and alerting
Docker container, K8s, AWS etc.
12 factor app

3. Agenda
● How to define service boundaries
● How services could communicate efficiently
● How to store the state of a cloud native application

4. Cloud Native Applications
Pros
● Speed of innovation
● Fail safe
● Scalability
● Polyglot
Cons
● Complexity
● Eventual consistency
● Higher operational cost

5. Bounded Context
A Microservice Definition by Adrian Cockcroft(Netflix cloud architect)
“Loosely coupled service oriented
architecture with bounded contexts”

6. Discovering a Bounded Context
Context - a setting in which a word or
statement appears that determines
its meaning.
Bounded context - the conditions in
which a particular model is defined
and applicable.

7. Inter Service Communication - maturity level 1
1. Messages + RPC calls when more data is needed

8. Inter Service Communication - maturity level 2
2. Event-carried state transfer
Cohesion, better availability

10. Inter Service Communication - maturity level 3
3. Events sourcing

11. CQRS

12. Real World Example

13. Event Storming

15. Q & A

16. Resources
Event sourcing
● https://www.youtube.com/watch?v=8JKjvY4etTY
● https://www.youtube.com/watch?v=LDW0QWie21s&t=271s
● https://www.youtube.com/watch?v=STKCRSUsyP0&t=1714s
● https://leanpub.com/esversioning
Domain Driven Design