Rest Vs. Reactive

Interaction Patterns in Microservices Architecture

IT Consulting

Microservices

System is not very Responsive

API G

atew

ay

Create Order

Inventory Services

Price Services

Payment Services

Shipping Services

Analytics Services

Synchronous and Rest based Architecture

Potential Performance Drawbacks

! I/O & DB blocking !Monoliths and performance management !Poor internal and external end-point

management

Reactive Architecture

!Architecture Style !Responsive !Resilient !Elastic !Message and Event Driven !Asynchronous & non-blocking

API G

atew

ay

Order Management

Service

Inventory Services

Price Services

Payment Services

Shipping Services

Non-blocking and Asynchronous Inter-Service Communication

Order Management

Service Message Broker

C

C

E

E

C Command E Event

Rest

Analytics Services

The Actor Model and the Akka ToolKit

Less-blocking Persistence, DDD, CQRS and Event Sourcing

E Event

ProducerProducer

Event Subscriber

Event Processor

Event Store Journal

E

E

E

E

QueryQuery State

Reinventing the Wheel

!DDD, CQRS and Event Sourcing !Kafka !Actor !Akka !Lagom

Potential Concerns

!Business Process Changes !More complex DevOps !Learning Curve

The rise of the Microservices frameworks

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