How to enable KeepAlive in apache 2?

[kaustubh_s]

The KeepAlive is core functionlity of the apache, this can be configured only in httpd.conf and can be customised for virtual host.
Read more at

core - Apache HTTP Server

To enable the KeepAlive on the server

1) open httpd.conf

# vi /etc/httpd/conf/httpd.conf

2) Put the following contents in httpd.conf but outside virtualhost

KeepAlive On
KeepAliveTimeout 5
MaxKeepAliveRequests 100

Save and quite

3) restart httpd service

# /etc/init.d/httpd restart

To enable KeepAlive for particular VirtualHost

1) Open httpd.conf and search virtualhost

2) Edit virtualhost as given below

<VirtualHost mydomain.com:80>
ServerName mydomain.com
ServerAlias www.mydomain.com
DocumentRoot /home/mydom/mydomain.com
KeepAlive On
KeepAliveTimeout 5
MaxKeepAliveRequests 100
------- rest contents ------
</VirtualHost>

save and quite

3) Restart httpd service.

[mathewines]

What is Keep-Alive?
The Keep-Alive extension to HTTP, as defined by the HTTP/1.1 draft, allows persistent connections. These long-lived HTTP sessions allow multiple requests to be send over the same TCP connection, and in some cases have been shown to result in an almost 50% speedup in latency times for HTML documents with lots of images.