AWS Certified Solution Architect – Points to remember (DynamoDB)

  1. Fully managed NoSQL database service.
  2. You cannot select Availability Zone while creating a DynamoDB table.
  3. No Secondary Indexes created by default. Must be created manually if required.
  4. Provisioned capacity set to 5 reads and 5 writes by default.
  5. Amazon DynamoDB stores three geographically distributed replicas of each table to enable high availability and data durability.
  6. Two Consistency models:
    Eventually Consistent Reads (Default): Maximizes read throughput but change might not reflect immediately.
    Strongly Consistent Reads: Can be request and give read speeds of less quicker.
  7. A single Scan will only return a result set that fits within the 1 MB size limit.
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