Category Archives: performance

HAProxy and Varnish comparison

Posted on July 4, 2012 by

In opensource world, there are some very smart products which are very often used to build a high performance, reliable and scalable architecture. HAProxy and Varnish are both in this category. Since we can’t really compare a reverse-proxy cache and … Continue reading →

Posted in HAProxy, performance | Tagged , , , , , , , | 7 Comments

Hypervisors virtual network performance comparison from a Virtualized load-balancer point of view

Posted on April 24, 2012 by

Introduction At HAProxy Technologies, we edit and sell a Load-Balancer appliance called ALOHA (stands for Application Layer Optimisation and High-Availability). A few month ago, we managed to make it run on the most common hypervisors available: VMWare (ESX, vsphere) Citrix … Continue reading →

Posted in benchmark, performance | Tagged , , , | 15 Comments

How to play with maxconn to avoid server slowness or crash

Posted on June 28, 2011 by

Using Aloha load balancer and HAProxy, it is easy to protect any application or web server against unexpected high load. Introduction The response time of web servers is directly related to the number of requests they have to manage at … Continue reading →

Posted in Aloha, performance | Tagged , , | 8 Comments

Smart content switching for news website

Posted on June 17, 2011 by

Purpose Build a scalable architecture for news website using below components: load balancer with content switching capability cache server application server Definition Content switching: the ability to route traffic based on the content of the HTTP request: URI, parameters, headers, … Continue reading →

Posted in Aloha, layer7, optimization, performance | Tagged , , , , , | 4 Comments