Amazon SimpleDB
Early-generation key-value store
A very early AWS NoSQL data store using a domain–item–attribute model that automatically indexes every attribute and allows simple SELECT-style queries. AWS no longer shows it in the console and does not recommend it for new projects.
- Cost$ Low
- Difficulty●●●●●
- Costs money when idle?A little
- Serverless
Think of it asLike an old paper notebook: still usable, but everyone has moved to digital notes.
When to use it
✓ Use it when
Only when maintaining an old application that already uses SimpleDB.
✗ Avoid it when
Any new project → DynamoDB.
Common uses
- Maintaining old applications storing small metadata
- Storing simple configuration/attributes in legacy systems
What does it cost?
- Pricing model: Charged by machine hours used to process queries, GB stored and data transferred out.
