CQRS in Practice

4h 22m 58s
English
Paid

Course description

There are a lot of misconceptions around the CQRS pattern, especially when it comes to applying it in real-world software projects. In this course, CQRS in Practice, you will learn all about CQRS with event sourcing, database configuration for reads and writes, and more. First, you will learn exactly what CQRS is, the principles behind it, and the benefits it can provide for your project. Next, you will explore the common misconceptions and anti-patterns around CQRS. 

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Finally, you will see a detailed, step-by-step implementation of this pattern in practice. The sample project you'll be working on is close to what you will find in the real world, and you will see each step on the way to CQRS in great detail. By the end of this course, you will have a foundational understanding of the CQRS pattern and how to implement it in your software projects.

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#1: Course Overview

All Course Lessons (73)

#Lesson TitleDurationAccess
1
Course Overview Demo
01:35
2
Introduction
03:30
3
CQRS and Its Origins
05:31
4
Why CQRS?
03:39
5
CQRS in the Real World
01:32
6
Summary
01:29
7
Introduction
00:20
8
Problem Domain Introduction
05:57
9
Application Code Introduction
11:31
10
Application Code Drawbacks
08:25
11
Summary
01:32
12
Introduction
00:21
13
CRUD-based Interface
07:27
14
Task-based Interface
01:49
15
Untangling the Update Method
08:31
16
Recap: Untangling the Update Method
03:26
17
Task-based User Interface
02:34
18
Dealing with Create and Delete Methods
04:35
19
Summary
03:43
20
Introduction
00:46
21
Introducing a First Command
11:31
22
Commands in CQS vs. Commands in CQRS
02:48
23
Commands and Queries in CQRS
04:41
24
Commands and Queries in the Onion Architecture
04:22
25
Commands vs. DTOs
03:59
26
Leveraging ASP.NET Core Dependency Injection to Resolve Handlers
05:18
27
Introducing a Query
06:44
28
Finishing up the Refactoring
04:41
29
Recap: Introducing Commands and Queries
03:33
30
Summary
04:28
31
Introduction
00:33
32
New Requirement: Database Retries
02:48
33
Introducing a Database Retry Decorator
08:34
34
Decorator Pattern
03:24
35
Introducing Another Decorator
02:25
36
Streamlining the Decorator Configuration
07:16
37
Recap: Streamlining the Decorator Configuration
01:29
38
Decorators vs. ASP.NET Middleware
05:27
39
Command and Query Handlers Best Practices
04:01
40
Summary
02:32
41
Introduction
00:55
42
The State of the Read Model
05:08
43
Separation of the Domain Model
05:01
44
Simplifying the Read Model
04:13
45
Recap: Simplifying the Read Model
06:40
46
The Read Model and the Onion Architecture
02:26
47
Summary
02:06
48
Introduction
00:17
49
Meet Scalability
05:02
50
Separation at the Data Level in the Real World
02:07
51
Designing a Database for Queries
03:11
52
Creating a Database for Queries
04:04
53
Recap: Creating a Database for Queries
02:00
54
Scalability
01:55
55
A Word of Caution Regarding the Database for Reads
01:58
56
Summary
02:49
57
Introduction
00:21
58
State-driven Projections
06:36
59
Synchronous State-driven Projections
03:05
60
Event-driven Projections
02:47
61
Consistency
03:41
62
Eventual Consistency
04:18
63
Versioning
01:51
64
CQRS and the CAP Theorem
03:23
65
Summary
02:16
66
Introduction
00:16
67
CQRS and Event Sourcing
02:18
68
Evolutionary Design
01:59
69
Using Commands and Queries from Handlers
03:52
70
One-way Commands
01:55
71
CQRS vs. the Specification Pattern
02:47
72
Resource List
00:59
73
Course Summary
01:55

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