by Baptiste Assmann | May 6, 2015 | architecture, HAProxy, layer7, optimization
HAProxy’s load-balancing algorithms HAProxy supports many load-balancing algorithms which may be used in many different type of cases. That said, cache servers, which deliver most of the time the static content from your web applications, may require some...
by Baptiste Assmann | Jan 26, 2015 | Aloha, architecture, HAPEE, HAProxy, layer7, optimization, performance
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 backend. HAProxy map...
by Baptiste Assmann | Dec 17, 2013 | architecture, HAProxy, layer7, ssl
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, there was no...
by Baptiste Assmann | Nov 7, 2012 | Aloha, HAProxy, optimization
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 client request. Some...
by Baptiste Assmann | Oct 16, 2012 | Aloha, architecture, HAProxy, security
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 Web...
