event-store-design

1# Event Store Design
2 
3Comprehensive guide to designing event stores for event-sourced applications.
4 
5## When to Use This Skill
6 
7- Designing event sourcing infrastructure
8- Choosing between event store technologies
9- Implementing custom event stores
10- Optimizing event storage and retrieval
11- Setting up event store schemas
12- Planning for event store scaling
13 
14## Core Concepts
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16### 1. Event Store Architecture
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18```
19┌─────────────────────────────────────────────────────┐
20│                    Event Store                       │
21├─────────────────────────────────────────────────────┤
22│  ┌─────────────┐  ┌─────────────┐  ┌─────────────┐ │
23│  │   Stream 1   │  │   Stream 2   │  │   Stream 3   │ │
24│  │ (Aggregate)  │  │ (Aggregate)  │  │ (Aggregate)  │ │
25│  ├─────────────┤  ├─────────────┤  ├─────────────┤ │
26│  │ Event 1     │  │ Event 1     │  │ Event 1     │ │
27│  │ Event 2     │  │ Event 2     │  │ Event 2     │ │
28│  │ Event 3     │  │ ...         │  │ Event 3     │ │
29│  │ ...         │  │             │  │ Event 4     │ │
30│  └─────────────┘  └─────────────┘  └─────────────┘ │
31├─────────────────────────────────────────────────────┤
32│  Global Position: 1 → 2 → 3 → 4 → 5 → 6 → ...     │
33└─────────────────────────────────────────────────────┘
34```
35 
36### 2. Event Store Requirements
37 
38| Requirement       | Description                        |
39| ----------------- | ---------------------------------- |
40| **Append-only**   | Events are immutable, only appends |
41…