DynamoDB¶

TLDR¶

NoSQL Serverless DB. Tons of features and can be global.

Features¶

• NoSQL
• serverless
• millisecond latency
• key value doc db.
• single digit millisecond performance
• multi-AZ
• fully managed
• multi master
• backup and restore
• in memory caching
• transaction capability

Capacity Modes¶

• provisioned capacity with optional autoscaling
• on demand capacity

Use cases¶

• can replace Elastic cache (Strong session data with TTL feature)
• serverless apps
• rapidly evolve schemas
• small documents 100bs
• distributed serverless cache

DAX cluster¶

• Read cache
• in memory
• microsecond read latency

Auth¶

• IAM

Dynamo DB Stream¶

• event processing
• invoke Lambda or send to Kinesis
• 24 hour retention
• limited number of consumers

Dynamo DB Kinesis Data Steams¶

• 1 year retention
• all features of Kinesis

Global Tables¶

• active setup for multi region.
• Two-way replication.
• Must enable streams as prerequisite.
  • To get a changelog used to replicate data across replica tables in other regions.

Backups¶

• automated backups up to 35 days with PITR to restore to new table
• on demand backups

Export¶

• export import to S3

Security¶

• support KMS Customer Managed Key

CLI Created Tabled¶

• Autoscaling wont be enabled by default