Editing HTTP pipelining (section)

===Implementation in web proxy servers===
Most HTTP proxies do not pipeline outgoing requests.<ref>{{cite web|url= https://www.mnot.net/blog/2007/06/20/proxy_caching|title=The State of Proxy Caching|date=June 20, 2007|author=Mark Nottingham|accessdate= May 16, 2009}}</ref>

Some HTTP proxies, including transparent HTTP proxies, may manage pipelined requests very badly (e.g. by mixing up the order of pipelined responses).<ref>{{cite web|url= https://www.mnot.net/blog/2011/07/11/what_proxies_must_do|title=What proxies must do|date=July 11, 2011|author=Mark Nottingham|accessdate= October 16, 2021}}</ref>

Some versions of the [[Squid (software)|Squid]] web proxy will pipeline up to two outgoing requests. This functionality has been disabled by default and needs to be manually enabled for "bandwidth management and access logging reasons".<ref>{{cite web|url=http://www.squid-cache.org/Doc/config/pipeline_prefetch/|title=squid : pipeline_prefetch configuration directive|date=November 9, 2009|publisher=[[Squid (software)|Squid]]|accessdate=December 1, 2009}}</ref> Squid supports multiple requests from clients.

The [[Polipo]] proxy pipelines outgoing requests.<ref>{{cite web|url= http://www.pps.jussieu.fr/~jch/software/polipo/|title=Polipo — a caching web proxy|date=September 18, 2009|publisher=Juliusz Chroboczek|accessdate=November 12, 2009}}</ref>

Tempesta FW, an open source [[application delivery controller]],<ref>{{cite web|url= https://github.com/tempesta-tech/tempesta|title=Tempesta FW — a Linux Application Delivery Controller|publisher=GitHub|accessdate=March 29, 2018}}</ref> also pipelines requests to backend servers.<ref>{{cite web|url= https://github.com/tempesta-tech/tempesta/wiki/Servers:-Tempesta's-side|title=Servers: Tempesta's side - tempesta-tech/tempesta Wiki|date=August 1, 2017|publisher=Tempesta Technologies INC|accessdate=March 29, 2018}}</ref>