Category Archives: performance

Quand le marketing dépense des sous qui ne vont pas à l’innovation

Pas facile le load-balancing ! J’ai d’ordinaire un très grand respect pour nos concurrents, que je qualifie plutôt de confrères et qu’il m’est même déjà arrivé d’aider en privé pour au moins deux d’entre eux. Etant à l’origine du répartiteur … Continue reading

Posted in Aloha, benchmark, optimization, performance | Tagged , , , | Leave a comment

HAProxy, Varnish and the single hostname website

As explained in a previous article, HAProxy and Varnish are two great OpenSource software which aim to improve performance, resilience and scalability of web applications. We saw also that these two softwares are not competitors. Instead of that, they can … Continue reading

Posted in Aloha, architecture, HAProxy, performance | Tagged , , , , , , , , , , | 32 Comments

HAProxy and Varnish comparison

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

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

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