RDS vs DynamoDB
RDS and DynamoDB serve different needs. RDS is for relational data with complex queries. DynamoDB is for simple key-value lookups at massive scale.
Comparing Database Services Video
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Comparison
| Feature | Amazon RDS | Amazon DynamoDB |
|---|---|---|
| Type | Relational (SQL) | Non-relational (NoSQL) |
| Queries | Complex queries and joins | Simple key-value lookups |
| Schema | Fixed schema | Flexible schema |
| Latency | Milliseconds | Single-digit milliseconds |
When to Use Each
- RDS: Complex queries, joins, ACID (Atomicity, Consistency, Isolation, Durability) transactions, traditional applications
- DynamoDB: High-traffic apps, gaming, IoT, real-time data at any scale
