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Questions tagged [aws-lambda]

AWS Lambda is a compute service that lets you run code without the overhead of managing servers. (Not to be confused with the [lambda] tag, which instead refers to a type of function).

AWS Lambda is a cloud offering from Amazon Web Services (AWS). AWS Lambda is a serverless compute service that runs code in response to events and automatically manages the underlying infrastructure for you.

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Restarting AWS lambda function to clear cache

I have a AWS Lambda function that creates an object from a s3 call in cold start. I then hold the object in the cache while the function is warm to keep load times down. When files are changed in s3, I have a trigger to run the lambda, but not all…
Marc
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Lambda@Edge not logging on cloudfront request

As explained in the Docs , I set up Lambda@edge for cloudfront trigger of Viewer Response. The lambda function code : 'use strict'; exports.handler = (event, context, callback) => { console.log('----EXECUTED------'); const response =…
formatkaka
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How to point ApiGateway to a specific Lambda alias

I created a resource in Amazon's ApiGateway. It is pointing to a Lambda function. This is being hit by a native mobile application (android and ios) which is already in the wild. I now want to modify the Lambda function, but I see no way to change…
digitaljoel
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Adding AWS Lambda with VPC configuration causes timeout when accessing S3

I am trying to access S3 and resources on my VPC from AWS Lambda but since I configured my AWS Lambda to access VPC it's timing out when accessing S3. Here's the code from __future__ import print_function import boto3 import logging import…
Chenna V
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S3 Bucket Lambda Event: Unable to validate the following destination configurations

I'm trying to create an S3 bucket and immediately assign a lambda notification event to it. Here's the node test script I wrote: const aws = require('aws-sdk'); const uuidv4 = require('uuid/v4'); aws.config.update({ accessKeyId: 'key', …
Scotty Waggoner
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Accessing local filesystem in AWS lambda

Is it possible to access local filesystem in a AWS lambda function? If so, is there any downside to doing so?
SquareRoot
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Error executing "Hello World" for AWS Lambda in Java

I have written following Hello World Lambda which I am executing by uploading on AWS via AWS toolkit for Eclipse. public class HelloWorldLambdaHandler implements RequestHandler { public String handleRequest(String input, Context…
Hemant
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AWS Lambda - How to stop retries when there is a failure

I know that when a Lambda function fails (for example when there is a time out), it tries to run the function 3 more times again. Is there any way to avoid this behavior? I' have been reading the documentation, but didn't find anyting about…
AleGallagher
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How to use Dependency Injection in AWS Lambda C# implementation

I have created Lambda functions using AWS.Net SDK, .net core version 1.0. I want to implement dependency injection. Since lambda functions triggered and run independently in AWS environment, there is no such class like Startup present. How and Where…
Yaduraj
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How to return the inserted item in dynamoDB

I am using nodeJS sdk to put the item to dynamoDB, The item is: { "eventId": date + '-' + eventName + '-' + eventPurpose, "eventName": eventName, "eventPurpose": eventPurpose, "eventDates": eventDates, "attendees": attendees } The…
Lakshman Diwaakar
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AWS lambda function stops working after timed out error

I have a simple lambda function that asynchronously makes an API calls and then returns data. 99% of the time this works great. When ever the API takes longer then the lambda configured timeout, it gives an error as expected. Now the issue is that…
jjbskir
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Reading data from S3 using Lambda

I have a range of json files stored in an S3 bucket on AWS. I wish to use AWS lambda python service to parse this json and send the parsed results to an AWS RDS MySQL database. I have a stable python script for doing the parsing and writing to the…
LearningSlowly
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can AWS Lambda connect to RDS mySQL database and update the database?

I am trying to connect AWS Lambda function to RDS mysql database. I just wanted to update the database from my lambda function. Is it possible to access RDS by specifiying IAM Role and access Policy?. I can connect to mysql databse using mysql…
ARUNBALAN NV
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"invalid ELF header" when using the nodejs "ref" module on AWS Lambda

I've just uploaded a zip to AWS Lambda which included the "ref" (https://www.npmjs.com/package/ref), which is needed to validate an iOS Game Center authentication token (How to authenticate Game Center User from 3rd party node.js…
seaders
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How to resolve: 'Unable to resolve AWS account to use. It must be either configured when you define your CDK or through the environment'

I am trying to run CDK commands to check the diff of my local and remote stack. I am using the following command. cdk diff --profile saml I am getting the following error message Unable to resolve AWS account to use. It must be either configured…
Drew Gallagher
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