How does Dynamo DB work internally?

Dynamo DB uses B-trees and Hashing techniques to manage data. When you enter data, it is first distributed into different partitions using hashing then the data is stored in a particular partition by initializing it with a key. Each partition can store up to 10GB of data by default and handles 3000 read and 1000 write capacity units. Dynamo DB stores and retrieves information based on partition key values.

To write an item to the table, Dynamo DB uses partition key value and inputs this value to the hash function then the output of this function determines the partition of where to store the item.

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