Investigate performance of batch write scripts to DynamoDB

[michasdev]

Investigate bottlenecks and potential improvements in scripts responsible for batch write operations in DynamoDB. Analyze:

• Partitioning strategies and parallelization
• DynamoDB limitations or throttling
• Adjustments to throughput, batch size, and error handling
• Current logs, metrics, and reports of possible slowness

Expected results:

• Report of identified bottlenecks
• Optimization suggestions
• Next steps to improve performance

If applicable, provide examples of real scenarios where the problem occurs.