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Sep 16, 2024 · Almost all protocols differ between ALB and NLB and are used for different use cases. The only similarity is when using HTTPS (ALB) and TLS (NLB), where both load balancers support encrypted traffic and TLS termination at the load balancer level.
- What Is Load Balancing?
- Getting Started with AWS Elastic Load Balancer
- How to Choose The Right Load Balancer on Amazon
- Classic Load Balancer
- Network Load Balancer
- Application Load Balancer
- Internet-Facing and Internal Load Balancers
- Which AWS Load Balancing Should You Choose?
Load balancing is a mechanism that automatically distributes traffic across multiple servers or virtual instances. Once in AWS, you can manage your own load balancers installed on EC2 instances, like F5 BIG-IP or open-source HAProxy, or you can use an AWS native service called Elastic Load Balancing (ELB). In this article, I will cover the basics o...
Elastic Load Balancer is an AWS managed service providing highly available load balancers that automatically scale in and out and according to your demands. In general, the service helps you achieve high availability by distributing traffic between healthy instances in multiple availability zones. Although the ELB service is highly-available within...
Elastic Load Balancing provides three types of load balancers: 1. Classic Load Balancer 2. Network Load Balancer 3. Application Load Balancer The below table includes a per-feature comparison of the three balancers: Source: https://aws.amazon.com/elasticloadbalancing/details/#compare How to choose the best one for your application? Let’s see what t...
This is the oldest type of load balancers provided by AWS. It may execute the following operations: 1. passing through TCP traffic, 2. handling HTTP/HTTPS requests, 3. or terminating SSL and inserting HTTP headers. Classic Load Balancers were initially designed for applications within the EC2-Classic network, and they are not recommended when using...
The Network Load Balancer operates at Layer 4 (Transport Layer) of the OSI model. When NLB receives a connection request, it selects a target from the associated target-group and then attempts to open a TCP connection to the port selected in the listener configuration. A target can be either an EC2 instance, a container, or an IP address. However, ...
Application Load Balancers work similar to Network Load Balancers, but they only use HTTP and HTTPS protocols. After an ALB receives a request, the listener rules are evaluated to determine which rule should be applied, and then a target host from an appropriate target group is selected. Requests can be routed to a different target group, based on ...
When setting load balancers, you can choose if they are to be Internet-facing or internal ones. An Internet-facing load balancer, as the name implies, receives requests from the Internet and passes them by to internal instance. It has a DNS name that should be used to send requests to the application. It is recommended to use the DNS name instead o...
It… depends. One thing is sure, if you are planning to implement a scalable environment in AWS, Auto Scaling won’t suffice. ELB configuration is easy and straightforward. All you need to do is choose the right load balancer for your applications. If you need to handle millions of requests per second or you use protocols other than HTTP/HTTPS, go wi...
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Oct 16, 2023 · Use AWS Network Load Balancer (NLB) when: Load balancing needs are at Layer 4 (TCP/UDP) or for non-HTTP protocols. High throughput and low latency are essential. Static IP addresses are required. Routing traffic for containers, microservices, or cross-zone load balancing.
Oct 25, 2023 · Application Load Balancer (ALB) and Network Load Balancer (NLB) are the most commonly used ELB services and are the focal points of this article. It is important to familiarize yourself with the features and pricing of ALB and NLB and how they may apply to your specific use cases.
Sep 23, 2024 · An Application Load Balancer (ALB) only works at layer 7 (HTTP). It has a wide range of routing rules for incoming requests based on host name, path, query string parameter, HTTP method, HTTP headers, source IP, or port number. In contrast, ELB only allows routing based on port number.
Jul 10, 2023 · If you need to load balance TCP/UDP traffic or higher performance with low latency, use NLB. But if you are balancing HTTP/HTTPS traffic, consider using ALB, which might be more cost-effective. Hourly Costs and Data Processing Costs: NLB charges are based on two dimensions – hourly cost and data processed.
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May 25, 2023 · Network Load Balancer. The Network Load Balancer (NLB) works at layer 4 and can handle TCP, UDP, and TLS traffic. It is the most performant ELB and works with static IP addresses. You can also assign one elastic IP address per subnet.
