Software architecture is trade-offs

Coupling and cohesion

In software design we want to achieve loose coupling and high cohesion

...sometimes

Loose coupling and high cohesion

Means that modules should

• be independent of each other
• have a single purpose
• have a well defined interface

Tight vs loose coupling

Communication in distributed systems

Synchronous vs asynchronous

Communication in distributed systems

What is an Event?

In business terms: Actions of interest that occur at distinct points in time

In software: Simply a message sent between two system components or services.

It has a spesific type and can contain information that is passed to the other component.

Batch vs Stream processing

Event-driven architecture

Reference model

Message brokers

IoT use case

Azure Event Hub

Apache Kafka

Command Query Responsibility Segregation

Event sourcing

Event storming