Materializing State

Event-Driven Microservices need to materialize states. And it comes with the important things to think about. Two approaches to choose from:

• Internal state store
• or External state store

Both have pros and cons. Both have important scalability and recovery considerations.

Two approaches for changing data structures:

• Bebuilding
• and Migration

Transactions and how to emulate them in order to implement Effectively Once processing.

All of these is disclosed in the Chapter 7 of the book we are currently studying:

Introduction into Event-driven microservice (EDM) architecture consists of the following topics:

• two topologies
• content of events
• three types of events
• table-stream duality
• schemas for defining event data
• single writer principle
• features of event broker
• event broker vs message broker
• single source of truth principle
• scaling using containers and VMs
• microservice taxes that we should pay

These topics are disclosed in the Chapter 2 of the book we are currently studying: