Networking & Content Delivery

Tag: AWS Lambda

Performing Route 53 health checks on private resources in a VPC with AWS Lambda and Amazon CloudWatch

If you have ever used Amazon Route 53 health checks to monitor resources, you know that monitored resources must have public IP addresses. This is because Route 53 health checkers are public and they can only monitor hosts with IP addresses that are publicly routable on the internet. You may want to monitor your resources […]

Lambda functions as targets for Application Load Balancers

As of today, Application Load Balancers (ALBs) now support AWS Lambda functions as targets. Build websites and web applications as serverless code, using AWS Lambda to manage and run your functions, and then configure an ALB to provide a simple HTTP/S frontend for requests coming from web browsers and clients. Triggering a Lambda Function from […]

Identifying unhealthy targets of Elastic Load Balancer

Introduction The Elastic Load Balancing (ELB) service provides you with Amazon CloudWatch metrics (HealthyHostCount and UnhealthyHostCount) to monitor the targets behind your load balancers. Although the unhealthy host count metric gives the aggregate number of failed hosts, there is a common pain point when you create an alarm for unhealthy hosts based on these metrics. […]

Resizing Images with Amazon CloudFront & Lambda@Edge | AWS CDN Blog

Do you have lots of images that need to be modified before delivery? No problem with Amazon CloudFront and Lambda@Edge. Read more on how you can use our services to modify image dimensions, apply watermarks, or optimize formats based on browser support all on the fly. Optimizing your image delivery can lead to a better experience for your users while also reducing your bandwidth usage.