📊 DynamoDB NoSQL - Advanced

Global Tables

# Create global table
aws dynamodb create-global-table \
  --global-table-name Users \
  --replication-group RegionName=us-east-1 RegionName=eu-west-1

DynamoDB Streams

# Process stream records
def process_stream_record(event):
  for record in event['Records']:
    if record['eventName'] == 'INSERT':
      handle_insert(record['dynamodb'])
    elif record['eventName'] == 'MODIFY':
      handle_update(record['dynamodb'])
    elif record['eventName'] == 'REMOVE':
      handle_delete(record['dynamodb'])

DAX Caching

# Create DAX cluster
aws dax create-cluster \
  --cluster-name my-cluster \
  --iam-role-arn arn:aws:iam::ACCOUNT:role/DAXRole

Key Takeaways

• **Global tables** replicate globally

• **Streams** enable real-time updates

• **DAX** caches for microsecond latency

• **TTL** auto-deletes expired items

Next Steps

Learn about ElastiCache optimization and monitoring.