DynamoDB¶

TLDR¶

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

Features¶

• NoSQL
• serverless
• milisec latency
• key value doc db
• single digit milisecond performance
• multi az
• fully manged
• multi master
• backup and restore
• in memory caching
• transaction capabilty

Capacity Modes¶

• provisoned capacity with optional autoscaling
• on demand capacity

Use cases¶

• can replace elasticache (stroing session data with ttl feature)
• serverless apps
• rapdily 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 active setup for multi region
• two way replication
• must enable Streams as prerequiste

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