AWS Lambda durable functions - Kiro Power

A Kiro power for building resilient, long-running multi-step applications and AI workflows with AWS Lambda durable functions. Durable functions automatically checkpoint progress, suspend execution for up to one year during long-running tasks, and recover from failures.

Overview

• Replay Model Guidance - Critical rules to avoid non-deterministic bugs
• Step Operations - Atomic operations with retry strategies
• Wait Operations - Delays, callbacks, and polling patterns
• Concurrent Operations - Map and parallel execution with concurrency control
• Error Handling - Retry strategies, saga pattern, and compensating transactions
• Testing Patterns - Local and cloud testing with test runners
• Deployment - CloudFormation, CDK, and SAM templates

Installation

Install the Power from kiro.dev, from the IDE, or directly from the GitHub URL. Check the documentation for detailed instructions.

Quick Start

Once installed, try:

"Help me create a durable Lambda function that processes orders with retries"

Kiro will load the appropriate steering files and guide you through:

1. Setting up the handler with proper replay model rules
2. Implementing steps with retry strategies
3. Adding error handling and compensating transactions
4. Writing tests with LocalDurableTestRunner
5. Deploying with CloudFormation/CDK/SAM

What This Power Provides

Critical Concepts

• Replay Model - How Lambda durable functions execute and replay
• Determinism Rules - What must be inside steps vs outside
• Qualified ARNs - Why versions/aliases are required
• Checkpoint Strategy - When and how state is persisted

Practical Patterns

• Multi-step workflows
• GenAI agentic loops
• Human-in-the-loop approvals
• Saga pattern for distributed transactions
• Batch processing with partial failure handling
• External system integration via callbacks

Power Structure

power-aws-lambda-durable-functions/
├── POWER.md                          # Main power file
└── steering/                         # Workflow-specific guidance
    ├── getting-started.md            # Quick start and common patterns
    ├── replay-model-rules.md         # CRITICAL: Replay model constraints
    ├── step-operations.md            # Step patterns and retry strategies
    ├── wait-operations.md            # Waits, callbacks, and polling
    ├── concurrent-operations.md      # Map and parallel execution
    ├── error-handling.md             # Retry strategies and saga pattern
    ├── testing-patterns.md           # Local and cloud testing
    └── deployment-iac.md             # CloudFormation, CDK, SAM

Keywords That Activate This Power

When you mention these keywords, Kiro will automatically load this power:

• lambda, durable, workflow, orchestration, state machine
• retry, checkpoint, long-running, stateful
• saga, agentic, ai workflow, human-in-the-loop, callback
• aws, serverless

Resources

• AWS Lambda durable functions Documentation
• JavaScript SDK Repository
• Python SDK Repository
• Kiro Powers Documentation

License

This project is licensed under the Apache-2.0 License.