Best High Availability Cluster Solutions

Compare the Top High Availability Cluster Solutions as of July 2025

What are High Availability Cluster Solutions?

High availability cluster solutions are systems designed to ensure continuous operation of applications and services by minimizing downtime through redundancy and failover mechanisms. These solutions link multiple servers or nodes to work together, so if one node fails, others automatically take over without service interruption. They provide monitoring, load balancing, and automatic recovery features to maintain system reliability and performance. High availability clusters are critical for mission-critical applications requiring near-zero downtime, such as databases, web services, and financial systems. By reducing single points of failure, they help organizations meet stringent uptime and disaster recovery requirements. Compare and read user reviews of the best High Availability Cluster solutions currently available using the table below. This list is updated regularly.

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    NGINX
    NGINX Open Source: The open source web server that powers more than 400 million websites. NGINX Plus is a software load balancer, web server, and content cache built on top of open source NGINX. Use NGINX Plus instead of your hardware load balancer and get the freedom to innovate without being constrained by infrastructure. Save more than 80% compared to hardware ADCs, without sacrificing performance or functionality. Deploy anywhere: public cloud, private cloud, bare metal, virtual machines, and containers. Save time by performing common tasks through the built‑in NGINX Plus API. From NetOps to DevOps, modern app teams need a self‑service, API‑driven platform that integrates easily into CI/CD workflows to accelerate app deployment – whether your app has a hybrid or microservices architecture – and makes app lifecycle management easier.
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    HAProxy Enterprise

    HAProxy Enterprise

    HAProxy Technologies

    HAProxy Enterprise is the industry’s leading software load balancer. It powers modern application delivery at any scale and in any environment, providing the utmost performance, observability and security. Load balance by round robin, least connections, URI, IP address and several hashing methods. Make advanced decisions based on any TCP/IP information or HTTP attribute with full logical operator support. Send requests to specific application clusters based on URL, domain name, file extension, client IP address, health state of backends, number of active connections, SSL client certificate, and more. Extend and customize HAProxy with Lua scripts that have access to the request/response pipeline. Maintain users' sessions based on TCP/IP information or any property of the HTTP request (cookies, headers, URI, and more). The world’s fastest, and most widely used software load balancer.
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