Add Lambda Durable Functions parallel processing pattern This pattern…#2949
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… demonstrates parallel processing using AWS Lambda Durable Functions to execute multiple independent operations concurrently, achieving better performance improvement over sequential execution. Features: - Parallel execution with context.parallel() and child contexts - Automatic checkpointing and fault tolerance - Comprehensive error handling and validation - Human-readable logging with step indicators across all functions - Production-ready with structured logging - Complete test scenarios and documentation Implementation: - 1 orchestrator function coordinating parallel execution - 4 worker functions: inventory, payment, shipping, tax - Proper handling of parallel() return format (extracts from .all array) - Child context usage for isolated checkpoint management - Durable wait demonstration (1 second pause without compute charges) The pattern includes: - Complete SAM template with IAM permissions - Comprehensive README with deployment and testing instructions - Example test events and expected responses - Architecture documentation - Implementation details for parallel execution patterns
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Description of changes:
Created new pattern to showcase lambda durable function - parallel processing use case in Node JS
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