cqrs-implementation

1# CQRS Implementation
2 
3Comprehensive guide to implementing CQRS (Command Query Responsibility Segregation) patterns.
4 
5## When to Use This Skill
6 
7- Separating read and write concerns
8- Scaling reads independently from writes
9- Building event-sourced systems
10- Optimizing complex query scenarios
11- Different read/write data models needed
12- High-performance reporting requirements
13 
14## Core Concepts
15 
16### 1. CQRS Architecture
17 
18```
19                    ┌─────────────┐
20                    │   Client    │
21                    └──────┬──────┘
22                           │
23              ┌────────────┴────────────┐
24              │                         │
25              ▼                         ▼
26       ┌─────────────┐          ┌─────────────┐
27       │  Commands   │          │   Queries   │
28       │    API      │          │    API      │
29       └──────┬──────┘          └──────┬──────┘
30              │                         │
31              ▼                         ▼
32       ┌─────────────┐          ┌─────────────┐
33       │  Command    │          │   Query     │
34       │  Handlers   │          │  Handlers   │
35       └──────┬──────┘          └──────┬──────┘
36              │                         │
37              ▼                         ▼
38       ┌─────────────┐          ┌─────────────┐
39       │   Write     │─────────►│    Read     │
40       │   Model     │  Events  │   Model     │
41       └─────────────┘          └─────────────┘
42```
43 
44### 2. Key Components
45…