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Topic #48

AWS DynamoDB vs RDS

AWS Notes · Coding Now Tech Institute1 min readSource

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
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