Networking & Content Delivery

Tag: Application Load Balancer

Improving availability with Application Load Balancer automatic target weights

Improving availability with Application Load Balancer automatic target weights

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.

Experian: Centralized internet ingress using AWS Gateway Load Balancer and AWS Transit Gateway

This is a guest post co-written with Mike Mosher, Sr Principal Cloud Platform Network Architect, and Daniel Lee, Lead Cloud Platform Engineer, from Experian. Experian is a global technology company that offers credit risk, fraud, targeted marketing, and automated decisioning solutions. We are an AWS early adopter and have embraced the cloud to drive digital […]

Geo-block Content Using Amazon Location and Edge Services

Organizations require methods to restrict access to content to adhere to compliance and regulatory requirements, sanctions, privacy laws, territorial ownership rights, security controls, etc. One way that companies restrict access is by Geo-blocking – restricting access to a website or another piece of content based on a user’s location. A popular method of geo-blocking content is […]

Manual Failover and Failback Strategy with Amazon Route53

Introduction Customers use multi-region architecture to achieve application resiliency such as Active-Active or Disaster Recovery (DR). Depending on DR strategy, customers may need to have failover from one region to the next. DR strategies are covered off in detail in a prior AWS Blog. DR strategies include either an Active/Passive or Multi-Site Active/Active approaches. Active/Passive […]

Target Group Load Shedding for Application Load Balancer

Load Shedding Load shedding is the practice of sacrificing enough application traffic to keep partial availability in the presence of an overload condition. Used in conjunction with strategies like load balancing, load shedding helps applications support service level agreements (SLAs) when increased traffic overwhelms available system resources. While the cloud’s elasticity reduces the need for […]

Application Load Balancer-type Target Group for Network Load Balancer

Application Load Balancer (ALB) is a fully managed layer 7 load balancing service that load balances incoming traffic across multiple targets, such as Amazon EC2 instances. ALB supports advanced request routing features based on parameters like HTTP headers and methods, query string, host and path based routing. ALB also offloads important capabilities including TLS termination, […]

How to solve Private IP exhaustion with Private NAT Solution

Introduction: As our computing needs evolve, one of the most common questions we hear from customers is, “how do I manage my private IP space? I’m almost out of it.” It’s difficult to assign separate Private IP ranges (RFC 1918) to different business units in an organization because the available IPv4 address range is restricted. […]

Using AWS Lambda to enable static IP addresses for Application Load Balancers

Update: On September 27th, 2021, we launched Application Load Balancer(ALB)-type target groups for Network Load Balancer (NLB). With this launch, you can register ALB as a target of NLB to forward traffic from NLB to ALB without needing to actively manage ALB IP address changes through Lambda. You can also use AWS Global Accelerator to […]

Accessing an AWS API Gateway via static IP addresses provided by AWS Global Accelerator

Introduction In this article, I will walk you through the steps to configure Amazon API Gateway in combination with AWS Global Accelerator to present Internet-facing API via static IP addresses to end users. This design addresses the need for static IP safelisting and also provides additional performance benefits to end users by sending user’s traffic […]

Solving DNS zone apex challenges with third-party DNS providers using AWS

Many customers ask us how they can point their zone apex to their web content if it uses a DNS name rather than an IP address. This blog covers three design patterns and approaches that solve zone apex challenges with third-party DNS providers for applications hosted in AWS—and the pros and cons of each approach.