Category: Elastic Load Balancing

A key challenge for SaaS providers is designing secure, scalable tenant routing mechanisms to identify tenants and route requests to appropriate resources. Effective tenant routing ensures isolation, scalability, and security. This post explores strategies for routing HTTP requests in multi-tenant SaaS environments on AWS, including considerations, best practices, and example scenarios. For routing strategies at […]

Connection tracking (conntrack) is a networking concept where a networking device, like a firewall, router, or NAT device, needs to track and maintain information about the state of IP traffic going through it. The AWS Nitro System that underlies AWS networking does connection tracking for some types of network traffic to implement the stateful nature […]

Elastic Load Balancing (ELB) offers four types of load balancers, all featuring high availability, automatic scaling, and robust security support for your applications: Application Load Balancer (ALB), Network Load Balancer (NLB), Gateway Load Balancer (GWLB), and Classic Load Balancer (CLB). ELB automatically scales up and down, and scales in and out in response to traffic […]

AWS recently announced support for mutually authenticating clients that present X509 certificates to Application Load Balancer (ALB). In this post, we discuss options for implementing this new feature, and things to consider while implementing. ALB operates at the application layer (layer 7 in the OSI model) and load balances incoming HTTP/HTTPS requests to backend targets. […]

Traffic Mirroring is an Amazon Virtual Private Cloud (VPC) feature you can use to copy network traffic from an elastic network interface of an Amazon Elastic Compute Cloud (EC2) instance and send it to a target storage service for analysis. You can use it for content inspection, threat monitoring, network performance monitoring, and troubleshooting. Through […]

Customers use AWS Network Load Balancer (NLB), Classic Load Balancer (CLB), or Application Load Balancer (ALB) as load balancers or ingress with Amazon Elastic Kubernetes Service (Amazon EKS) clusters. AWS Load Balancer Controller is designed to help manage Elastic Load Balancers for a Kubernetes cluster. It satisfies Kubernetes Ingress resources by provisioning ALBs and Kubernetes […]

Amazon Virtual Private Cloud (VPC) endpoints – powered by AWS PrivateLink—allow you to securely expose your application to consumers on AWS without using public IP space and without worrying about overlapping private IP space. You also don’t have to worry about creating bidirectional network paths using services like AWS Transit Gateway or Amazon VPC Peering.To […]

In this blog, we explore Automatic Target Weights (ATW), which can reduce the number of errors users experience when using web applications. ATW provides the ability to detect and mitigate gray failures for targets behind Application Load Balancers (ALB). A gray failure occurs when an ALB target passes active load balancer health checks, making it look healthy, but still returns errors. This scenario could be caused by many things, including application bugs, a dependency failure, intermittent network packet loss, a cold cache on a newly launched target, CPU overload, and more.

In this post, we explore how Amazon Elastic Compute Cloud (Amazon EC2) data transfer costs apply to the communication between Classic Load Balancers (CLB), Application Load Balancer (ALB), clients, and targets in multiple scenarios, to help you optimize data transfer costs on AWS. Elastic Load Balancing offers four types of load balancers, all featuring high […]

This post provides guidance on optimizing Elastic Load Balancer (ELB) cost and performance for your workloads. You can find recommendations for achieving optimal throughput and low latency, implementing efficient connection management, and ensuring performance and reliability during periods of high demand. Organizations building technology solutions on AWS should be well acquainted with the six pillars […]