How to make the web work in real-time

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06-07-2010

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How to make the web work in real-time

BBC NewsShortcomings of the traditional web search methods are becoming apparent as the online audience swells.* That ask-and-you-will-receive mechanism breaks down when too many people want data from a server at the same time. Everyone knows the frustration of websites that will not respond because they are overwhelmed.A change is under way to help the [...]

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LEARN ABOUT CENTOS

mrtg-webserver

MRTG-WEBSERVER(1)						       mrtg							 MRTG-WEBSERVER(1)

NAME

       mrtg-webserver - hints for web server configuration

SYNOPSIS

       If you want people to actually see the results of your network monitoring efforts you will need a webserver.

       This document lists some configuration hints for webservers. Contributions welcome.

APACHE

   Configuring mod_expire
       A big issue with mrtg monitoring data is the expiry time.  All these nice graphs you can create are only valid for a short time.  If you do
       not take special action some webbrowsers will not notice this and you may end up with people seeing old data because of caching issues.

       The apache module mod_expire allows you to setup special expiry properties for individual file.

       Here is an example for how this may look for an mrtg web directory.  The configuration directives can be stored into a .htaccess file.

	############################################################
	# Example .htaccess for use with apache-1.2 and mod_expire.
	# (mod_expire come with apache-1.2 but you have to explicitly
	# activate it when compiling the httpd ...)
	#############################################################
	#
	<Files "*-day.png">
	ExpiresActive On		  # enable expirations
	# five minutes
	ExpiresDefault M300
	</Files>

	<Files "*-week.png">
	ExpiresActive On
	ExpiresDefault M1800
	</Files>

	<Files "*-month.png">
	ExpiresActive On
	ExpiresDefault M7200
	</Files>

	<Files "*-year.png">
	ExpiresActive On
	ExpiresDefault M86400
	</Files>

	<Files "*.html">
	ExpiresActive On
	ExpiresDefault M300
	</Files>

	# index.html is not automatically generated
	<Files "index.html">
	ExpiresActive Off
	</Files>

AUTHOR

       Unknown

2.17.4								    2012-01-12							 MRTG-WEBSERVER(1)

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