Which Database Model to Choose?

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✏️📘 Summary Notes: https://1levelup.dev/blog/consistent-...

Key-Value 🐇
1:04 - Flexible for Unstructured Data
1:22 - Fast Lookup
1:53 - In-Memory Database
3:59 - Not for Complex Data Structures
4:21 - Not for ACID transactions
4:53 - Not for Historical Data
5:13 - Caching

Wide-column 🎡
6:16 - Column layout
6:57 - Primary Keys
7:52 - Denormalized
8:40 - Not for Random Filtering and Rich queries
9:51 - Not for Transaction Processing
10:39 - High scalability
11:52 - Optimized for Writes

Document 📑
12:32 - Denormalized
13:47 - Handle Unstructured Data
14:23 - Indexing and Rich Query
15:03 - Not for Complex joins and relationships
16:01 - Not for Referential integrity
16:20 - Most intuitive

Relational 👑
17:02 - Mature and formalized datamodel
17:47 - Normalization
18:44 - Difficult to scale horizontally
19:26 - ACID

Graph 🍇
20:51 - No need to compute the relationships at query time
21:49 - Handles Complex Data Structures
22:20 - Difficult to scale
22:51 - Not for Write-heavy workloads
23:47 - Multi-hop relationships