aws-serverless
AWS Serverless
Patterns
Lambda Handler Pattern
Proper Lambda function structure with error handling
When to use: ['Any Lambda function implementation', 'API handlers, event processors, scheduled tasks']
```javascript
// Node.js Lambda Handler
// handler.js
// Initialize outside handler (reused across invocations)
const { DynamoDBClient } = require('@aws-sdk/client-dynamodb');
const { DynamoDBDocumentClient, GetCommand } = require('@aws-sdk/lib-dynamodb');
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