The latest insights from the load balancing experts | Loadbalancer.org

Direct Server Return (DSR)

Oh DSR, how we love you. Let’s count the ways.
HAProxy
Layer 4 vs Layer 7 load balancing - we still love DSR, but… Andrew Howe
Direct server return, direct routing - no matter what you call it, using DSR maximises the throughput of return traffic and allows for near endless scalability. Here's why we still love it.

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Direct Server Return (DSR)
15 years later, we still love DSR Andrew Howe
Some relationships fizzle out over time. You know how it goes - you change, you start fighting, you grow apart. But fifteen years on, Loadbalancer.org’s love affair with Layer 4 DR mode is

2 min read

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Direct Server Return (DSR) is simply awesome - here’s why... Aaron West
Direct Server Return (DSR) is my favorite way to load balance application servers because it’s simple, transparent and super fast. Direct server return would seem to be a mode that has fallen out of

5 min read

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Yahoo’s L3 Direct Server Return (DSR), an alternative to LVS-TUN, explored. Aaron West
I had the opportunity to play with Yahoo’s implementation of L3 DSR using LVS and iptables, it was great fun so I thought I had better write a blog on using it. So, what

6 min read

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Layer 4 Direct Routing (LVS-DR) and Layer 4 TUN (LVS-TUN) in AWS Aaron West
Have you ever wondered if LVS works in AWS? I can already say for certain that LVS-NAT works great - but what about LVS-DR and LVS-TUN? Having spent the last several months playing in AWS,

6 min read

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Transparent vs Explicit proxy — which method should I use? Neil Hosking
Different vendors have widely different opinions on which method should be used to deploy web filters or SWGs (secure web gateways). Historically, vendors struggled to implement authentication in Transparent mode, and maybe they remember some

5 min read

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Load balancing Microsoft Print Server Rob Cooper
Microsoft Print Server provides a great way to share printers throughout your organisation, but when the print server falls over, the phone quickly starts to ring. By adding a load balancer and a second print

6 min read

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Load balancing via Direct Routing has several key advantages over NAT based methods Malcolm Turnbull
One of the (many) traditional problems with load balancing is the requirement to change your infrastructure in order to implement a hardware load balancer. Traditional DNS based round robin was easy as you just added

2 min read

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Direct Routing aka. Direct Server Return - How to solve the ARP problem on Windows Server 2016 Malcolm Turnbull
Direct Routing aka. Direct Server Return (DSR) aka. N-Path is a great load balancing method. And it is without doubt the fastest method possible. So, how does Direct Routing work? First, the incoming traffic from

3 min read

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