DynamoDB — Complete Guide
DynamoDB — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of AWS Cloud Tutorial on Toolliyo Academy.
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AWS Cloud Tutorial · Lesson 37 of 100
DynamoDB
Core services → Projects
Core services · 1 — AWS basics · ~6 min · AWS — Storage & Databases
What is this?
DynamoDB is a managed NoSQL key-value and document database with single-digit millisecond latency at any scale.
Why should you care?
AwsVerse session store and idempotency keys use DynamoDB for predictable latency under burst traffic.
See it live — copy this example
Run in AWS CloudShell / local AWS CLI v2, or follow the matching steps in the AWS Console (Free Tier).
aws dynamodb create-table \
--table-name awsverse-sessions \
--attribute-definitions AttributeName=sessionId,AttributeType=S \
--key-schema AttributeName=sessionId,KeyType=HASH \
--billing-mode PAY_PER_REQUEST \
--tags Key=App,Value=AwsVerseWhat happened?
- Creates an on-demand table with partition key sessionId.
- On-demand avoids capacity planning for spiky SaaS traffic.
Practice next
- Create table with partition key only.
- Put item: aws dynamodb put-item --table-name ... --item '{"sessionId":{"S":"abc"}}'.
- Enable TTL on expiry attribute.
- Add GSI on userId for lookup by user.
- Enable point-in-time recovery.
Remember
DynamoDB = serverless NoSQL. Design keys for access patterns. On-demand for unpredictable load.
AwsVerse cart sessions
Flash sale creates millions of sessions.
Outcome: DynamoDB on-demand absorbs spike without throttling.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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