conceptmaps.io
Sign in with Twitter

Welcome to conceptmaps.io :)

You can browse all the published concept maps without signing in. If you'd like to create your own concept maps, all you have to do is sign in with Twitter. It's free!

This is a detailed view of this map. You might also like to view a summary of the key concepts.

Concept Map » CQRS And Event Sourcing changes

CQRS and Event Sourcing represent an approach to building business systems that draws heavily on Domain Driven Design while avoiding tedious Object Relational Mapping and many other difficulties with common application development approaches.

Diagram print toggle size

Concepts

  1. A
  2. B
  3. C
  4. D
  5. E
  6. M
  7. P
  8. Q
  9. R
  10. S
  11. U
  12. V
  13. W

A top

Aggregate

This concept has no description.
  1. Aggregate has Behaviour
  2. Aggregate has Event Stream
  3. Aggregate has State
  4. Aggregate processes Command
  5. Aggregate rehydrates using Event Sourcing
  6. Aggregate rejects Command
  7. Command Handler instantiates Aggregate
  8. Domain Model is composed of Aggregate

Application Service

This concept has no description.
  1. Application Service implements Use Case
  2. Client Application calls Application Service
  3. Command Handler is a Application Service
  4. Query Handler is a Application Service

B top

Behaviour

This concept has no description.
  1. Aggregate has Behaviour
  2. Behaviour publishes Event
  3. Command triggers Behaviour

C top

CQRS

This concept has no description.
  1. CQRS is also known as Command Query Responsibility Separation
  2. CQRS is composed of Read Side
  3. CQRS is composed of Write Side

Client Application

This concept has no description.
  1. Client Application calls Application Service
  2. Client Application facilitates Use Case
  3. Client Application issues Command
  4. Client Application receives DTO

Command

A command is a serialised method call that capture the intent of the user. It is always expressed in the imperative, e.g. "Make Payment", "Ship Goods", etc.

It is important to note that commands can be rejected by the application based on any number of validations, including permissions, concurrency issues, data validation, etc.

  1. Aggregate processes Command
  2. Aggregate rejects Command
  3. Client Application issues Command
  4. Command changes State
  5. Command is a Message
  6. Command triggers Behaviour
  7. Command Handler receives Command
  8. Process Manager sends Command

Command Handler

This concept has no description.
  1. Command Handler instantiates Aggregate
  2. Command Handler is a Application Service
  3. Command Handler is also known as Write Service
  4. Command Handler receives Command
  5. Write Side is composed of Command Handler

Command Query Responsibility Separation

  1. CQRS is also known as Command Query Responsibility Separation

Correlation ID

This concept has no description.
  1. Event has Correlation ID
  2. Process Manager subscribes to Correlation ID

D top

DTO

This concept has no description.
  1. Client Application receives DTO
  2. DTO is also known as Data Transfer Object
  3. DTO represents View
  4. Query Handler returns DTO
  5. View Model is composed of DTO

Data Transfer Object

  1. DTO is also known as Data Transfer Object

Denormaliser

  1. View Generator is also known as Denormaliser

Domain Model

This concept has no description.
  1. Domain Model is composed of Aggregate
  2. Write Side is composed of Domain Model

Downstream Event Processor

This concept has no description.
  1. Downstream Event Processor is a Event Listener
  2. Downstream Event Processor publishes Event

E top

Event

This concept has no description.
  1. Behaviour publishes Event
  2. Downstream Event Processor publishes Event
  3. Event has Correlation ID
  4. Event is a Message
  5. Event Listener receives Event
  6. Event Sourcing reads Event
  7. Event Store persists Event
  8. Event Stream is composed of Event

Event Listener

This concept has no description.
  1. Downstream Event Processor is a Event Listener
  2. Event Listener receives Event
  3. Process Manager is a Event Listener
  4. View Generator is a Event Listener

Event Sourcing

This concept has no description.
  1. Aggregate rehydrates using Event Sourcing
  2. Event Sourcing reads Event
  3. Event Sourcing recreates State

Event Store

This concept has no description.
  1. Event Store is composed of Event Stream
  2. Event Store persists Event

Event Stream

This concept has no description.
  1. Aggregate has Event Stream
  2. Event Store is composed of Event Stream
  3. Event Stream is composed of Event

M top

Message

This concept has no description.
  1. Command is a Message
  2. Event is a Message

P top

Process Manager

This concept has no description.
  1. Process Manager is a Event Listener
  2. Process Manager is a State Machine
  3. Process Manager sends Command
  4. Process Manager subscribes to Correlation ID

Projector

  1. View Generator is also known as Projector

Q top

Query Handler

This concept has no description.
  1. Query Handler is a Application Service
  2. Query Handler is also known as Read Service
  3. Query Handler returns DTO
  4. Read Side is composed of Query Handler

R top

Read Service

  1. Query Handler is also known as Read Service

Read Side

This concept has no description.
  1. CQRS is composed of Read Side
  2. Read Side is composed of Query Handler
  3. Read Side is composed of View Model

S top

State

This concept has no description.
  1. Aggregate has State
  2. Command changes State
  3. Event Sourcing recreates State

State Machine

This concept has no description.
  1. Process Manager is a State Machine

U top

Use Case

This concept has no description.
  1. Application Service implements Use Case
  2. Client Application facilitates Use Case

V top

View

This concept has no description.
  1. DTO represents View
  2. View Generator generates View
  3. View Model is composed of View

View Generator

This concept has no description.
  1. View Generator generates View
  2. View Generator is a Event Listener
  3. View Generator is also known as Denormaliser
  4. View Generator is also known as Projector

View Model

This concept has no description.
  1. Read Side is composed of View Model
  2. View Model is composed of DTO
  3. View Model is composed of View

W top

Write Service

  1. Command Handler is also known as Write Service

Write Side

This concept has no description.
  1. CQRS is composed of Write Side
  2. Write Side is composed of Command Handler
  3. Write Side is composed of Domain Model

Collaborators

This concept map is owned by jimmyjazz68

Other users collaborating on this concept map:

  1. haruki_zaemon
  2. notahat
  3. taoza
  4. vonconrad