Dynamo Db
- Terminology
- Item: An item is composed of a primary or a composite key and flexibile number of attributes. Size of the item cannot be grater than 400 KB
- Atrribute: Each attribute associated with a data time composed of attribute name (course) and value or set of values (DevOps, AWS, Azure)
- Dynamo db supports two different kinds of primary keys
- Partition Key: This is simple primary
- Partition key and Sort Key: This is composite primary key
- Lets create a dynamodb database table
- Dynamo db
- from python Refer Here
- from java Refer Here
- from node js Refer Here
- from .net Refer Here
Document DB
- Amazon Document DB (with Mongo DB compatibility) is a fast, reliable and fully managed database service
- Document DB Can be used by existing applications which use mongo db and move the data of the mongo db into document database and use the same code
- Refer Here to find functional differences b/w mongo db and document db
- Migration from mongo db to document db Refer Here
- Compatibility list with mongo 4.0 Refer Here
Key Spaces DB
- This is cassandra compatible fully managed database as a service
Graph Database
- Graph database is a database designed to treat the relationships b/w data as equally important to data itself
- Amazon Neptune is Graph Database as a service.
QLDB
- If your application is on block chain technology, QLDB is ledger database as a service.
Elastic Cache
- In Elastic Cache Amazon offers
- Memcached
- Redis Cache
- Application can be integrated with Elastic Cache for storing cache data which in turn significantly improves the query performance which leads to application performance improvements
