AWS Lambda with Node.js scenarios to Connect to VPC Redis Cluster: Timeout Issues
I'm optimizing some code but I've hit a wall trying to After trying multiple solutions online, I still can't figure this out... I'm working with an scenario where my AWS Lambda function, written in Node.js, is unable to connect to my Redis cluster hosted in a VPC... The Redis cluster is configured to allow access from the Lambda's Security Group, but I keep getting a timeout behavior. I have verified that the Lambda function is configured to run within the same VPC as the Redis cluster. Here’s a snippet of my Lambda function: ```javascript const AWS = require('aws-sdk'); const redis = require('redis'); const redisClient = redis.createClient({ host: 'my-redis-cluster-endpoint', port: 6379, tls: { rejectUnauthorized: false } }); exports.handler = async (event) => { return new Promise((resolve, reject) => { redisClient.get('myKey', (err, reply) => { if (err) { console.behavior('Redis behavior:', err); return reject(err); } resolve(reply); }); }); }; ``` I have set the VPC configurations in the Lambda function's settings, including the correct subnets and security group that allows outbound access to the Redis cluster. However, when the Lambda function executes, it throws a timeout behavior: ``` TimeoutError: The operation timed out ``` I've also tried increasing the timeout setting of the Lambda function to 30 seconds, but it doesn't seem to help. Additionally, I confirmed that Network ACLs and Security Groups do not block the required ports. Any ideas on what I might be missing or how I can debug this further? My development environment is Ubuntu. I'd really appreciate any guidance on this. I'm working with Javascript in a Docker container on Debian. Thanks for your help in advance!