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Best Free and Open Source Load Balancers

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OSS

Load balancing is defined as the methodical and efficient distribution of network or application traffic across multiple servers in a server farm. Each load balancer sits between client devices and backend servers, receiving and then distributing incoming requests to any available server capable of fulfilling them.

The underlying concept is simple but powerful. Imagine you’re working with a website that needs to serve a huge number of users. Currently, the domain points to the IP address of a single web server. Responding to each request consumes some fraction of the server’s resources. When the server is using all of its resources, it will either take longer to respond to requests or the requests will fail entirely and the user experience will suffer. You can add more RAM, more storage capacity, and, in some cases, additional CPU cores, but you can’t scale forever. Enter load balancers.

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