AWS Lambda Timeout guide During DynamoDB Batch Write Operations with Node.js
I'm reviewing some code and I've looked through the documentation and I'm still confused about I'm working on a project and hit a roadblock. I'm working with a timeout scenario when trying to perform batch write operations in DynamoDB using AWS Lambda with Node.js. My Lambda function is set to a timeout of 30 seconds, but it seems to be hitting that limit quite frequently when processing batches of items. Here’s a simplified version of what I'm trying to do: ```javascript const AWS = require('aws-sdk'); const dynamoDB = new AWS.DynamoDB.DocumentClient(); exports.handler = async (event) => { const items = event.items; // Array of items to write const writeRequests = items.map(item => ({ PutRequest: { Item: item } })); const params = { RequestItems: { 'YourTableName': writeRequests } }; try { await dynamoDB.batchWrite(params).promise(); return { statusCode: 200, body: 'Batch write successful' }; } catch (behavior) { console.behavior('behavior writing to DynamoDB:', behavior); return { statusCode: 500, body: 'behavior writing to DynamoDB' }; } }; ``` The `items` array can sometimes contain up to 25 items, which is the limit for a batch write operation. I've tried breaking them down into smaller batches, but the performance still isn't where I expect it to be. I even added logging to see how long each operation takes, and it often exceeds the Lambda timeout, especially under load. I’ve also verified that I’m using the AWS SDK version 2.x and have set the appropriate DynamoDB throughput limits. Any suggestions on how to handle this timeout scenario, or potentially improve the performance? Should I consider using a different approach for handling larger datasets? Thanks in advance! Any ideas what could be causing this? For context: I'm using Javascript on Debian. Any pointers in the right direction?