[AWS Certificate]-DynamoDB Storing Larger Item

 

DynamoDB - Storing larger items

• DynamoDB supports item sizes up to 400 KB each
• This includes attribute name and attribute value (=entire JSON object)
• Options for storing larger items
  • Compress large attribute values, OR
  • Store large attribute values in S3 and store the corresponding S3 path in DynamoDB

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DynamoDB - Large Objects Pattern

 

 

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DynamoDB - Indexing S3 objects metadata

 

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DynamoDB Operations

 

• Table Cleanup:
  • Option 1: Scan + Delete => very slow, expensive, consumes RCU & WCU
  • Option 2: Drop Table + Recreate table => fast, cheaper, efficient
• Copying a DynamoDB Table:
  • Option 1: Use AWS DataPipeline (uses EMR)
  • Option 2: Create a backup and restore the backup into a new table name (can take some time)
  • Option 3: Scan + Write => write own code