Tag Archives: content switching

Web application name to backend mapping in HAProxy

Synopsis Let’s take a web application platform where many HTTP Host header points to. Of course, this platform hosts many backends and HAProxy is used to perform content switching based on the Host header to route HTTP traffic to each … Continue reading

Posted in Aloha, architecture, HAPEE, HAProxy, layer7, optimization, performance | Tagged , , , , , , , , | Leave a comment

Configuring HAProxy and Nginx for SPDY

Introduction to SPDY / HTTP-bis SPDY is a protocol designed by google which aims to fix HTTP/1.1 protocol weaknesses and to adapt this 14 years old protocol to today’s internet devices and requirements. Back in 1999, when HTTP/1.1 was designed, … Continue reading

Posted in architecture, HAProxy, layer7, ssl | Tagged , , , , | 1 Comment

Websockets load-balancing with HAProxy

Why Websocket ??? HTTP protocol is connection-less and only the client can request information from a server. In any case, a server can contact a client… HTTP is purely half-duplex. Furthermore, a server can answer only one time to a … Continue reading

Posted in Aloha, HAProxy, optimization | Tagged , , , , , , | 2 Comments

high performance WAF platform with Naxsi and HAProxy

Synopsis I’ve already described WAF in a previous article, where I spoke about WAF scalability with apache and modsecurity. One of the main issue with Apache and modsecurity is the performance. To address this issue, an alternative exists: naxsi, a … Continue reading

Posted in Aloha, architecture, HAProxy, security | Tagged , , , , , , , , , , , , | 3 Comments

Scalable WAF protection with HAProxy and Apache with modsecurity

Greeting to Thomas Heil, from our German partner Olanis, for his help in Apache and modsecurity configuration assistance. What is a Web Application Firewall (WAF)? Years ago, it was common to protect networks using a firewall… Well known devices which … Continue reading

Posted in Aloha, architecture, HAProxy, security | Tagged , , , , , , , , , | 6 Comments

SSL Client certificate management at application level

HAProxy and SSL The history of SSL in HAProxy is very short: around one month ago, we announced the ability for HAProxy to offload SSL from the servers. HAProxy SSL stack comes with some advanced features like TLS extension SNI. … Continue reading

Posted in Aloha, architecture, HAProxy, layer7, security, ssl | Tagged , , , , , , | 22 Comments

Application Delivery Controller and ecommerce websites

Synopsis Today, almost any ecommerce website uses a load-balancer or an application delivery controller in front of it, in order to improve its availability and reliability. In today’s article, I’ll explain how we can take advantage of ADCs’ layer 7 … Continue reading

Posted in Aloha, architecture, HAProxy, layer7, performance | Tagged , , , , , | 1 Comment