Event-Sourcing your React-Redux applications

May 12, 2016Download as PPTX, PDF0 likes1,873 views

This document discusses event sourcing for React-Redux applications. It introduces event sourcing and how it can be used to store application data and state changes as a sequence of immutable events. It describes using event sourcing with projections to update views and using command and query services to write events to the database and read/update projections. It provides examples of implementing event sourcing for a permit collection reducer and connecting the state to React components.

Event-Sourcing your React-
Redux applications
Maurice de Beijer - @mauricedb

Who am I?
• Maurice de Beijer
• The Problem Solver
• Microsoft Azure MVP
• Freelance developer/instructor
• Twitter: @mauricedb and @React_Tutorial
• Web: http://www.TheProblemSolver.nl
• E-mail: maurice.de.beijer@gmail.com

http://bit.ly/the-react-tutorial

Event-Sourcing your React-Redux applications

(Semi) Structured storage
Database CRUD Server HTTP Browser
React

Command Query Responsibility Segregation

Command Query Responsibility Segregation
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Query Service
Browser
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Read
Update

Event Sourcing
Projections
Database
Query
Service
Browser
React
Command
Service
Read
UpdateEvents
Database
Projector
Service

Event Pushing
Projections
Database
Query
Service
Browser
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Command
Service
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UpdateEvents
Database
Projector
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Push
Service

React with Redux
View
Server
Store
ActionAPI
HTTP
Use
Updates
Socket

The document discusses using React applications with event sourcing. It describes event sourcing as storing all state changes as a sequence of events and using these events to build current state through projections. It provides examples of using commands to trigger events, storing events in a database, and projecting events to update state in a Redux store that is then connected to React components to display data.

Event-Sourcing your React-Redux applicationsMaurice De Beijer [MVP]

This document discusses event sourcing for React-Redux applications. It introduces event sourcing and how it can be used to store application data and commands. Events are stored in a database and then projected from those events to build up current application state. This allows reconstructing state by replaying the sequence of events from the beginning. It provides an example of drafting a permit using commands, events and projections to update the UI through Redux state changes.

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This document discusses event sourcing for React-Redux applications. It introduces event sourcing as an architecture where commands trigger events that are stored in an event log, and views are updated by processing the event log through projections. It provides examples of using event sourcing with React-Redux, including storing events in a database, using command and query services, and updating views through projections driven by pushed events.

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The document discusses event sourcing, which is an approach to storing data in a database by recording the full history of events that caused the data to change state. It describes how event sourcing can be used with React and Redux applications by having command services generate events from user actions, storing those events in a database, and using projection services to transform the events into data views. Projection services update the Redux store, which then updates the React components to display the new state to the user.

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This document discusses event sourcing React-Redux applications. It introduces event sourcing and how events get stored in a database and used to update projections. It describes using a command service to handle actions and update events in the database. Events then get pushed to a projector service to update projections and a query service to serve data to the React frontend. It provides examples of drafting a permit event, projecting that event, connecting the Redux state to a React component, and how the permit reducers work.

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