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This is the page<br />
<a href="http://www.theherbsplace.com/index.php" rel="ugc">www.theherbsplace.com/index.php</a><br />
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all of my pages are dynamic so glad you told me it isn't applicable.<br />
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How and why does he share site designs?
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They have 1st page dynamic too, same indication as you were worried about.<br />
gtmetrix.com tells you how to halve transfer size while still serving same content.
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thanks again, that's helpful
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I am trying to improve my Amazon VPS server response time based on Google's page speed saying I need to load a page in 200 ms or less. &nbsp; After completing a webserver test at <a href="https://varvy.com" rel="ugc">https://varvy.com</a>&nbsp; I get this message<br />
<br />
************<br />
This page does not appear to support if modified since.<br />
<br />
Tool did not find if modified since indicators.<br />
<br />
Guideline states: 'Make sure that your web server correctly supports the If-Modified-Since HTTP header.'<br />
************<br />
<br />
Currently, I have Apache 2.2.15 and I can't find anything in the httpd.conf file. &nbsp;Please help me to get this server to not have this error.
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I am trying to improve my Amazon VPS server response time based on Google's page speed saying I need to load a page in 200 ms or less.   After completing a webserver test at https://varvy.com  I get this message

************
This page does not appear to support if modified since.

Tool did not find if modified since indicators.

Guideline states: 'Make sure that your web server correctly supports the If-Modified-Since HTTP header.'
************

Currently, I have Apache 2.2.15 and I can't find anything in the httpd.conf file.  Please help me to get this server to not have this error.

If-Modified-since need enabled on Centos 6 server

The Apache HTTP Server is a secure, efficient and extensible server that provides HTTP services in sync with the current HTTP standards. Typically Apache is run on a Unix-like operating system, but it is available for a wide variety of operating systems, including Linux, Novell NetWare, Mac OS-X and Windows. Released under the Apache License, Apache is open-source software.

Apache Web Server

A Linux distribution is an operating system made as a software collection based on the Linux kernel and, often, on a package management system and are available for a variety of systems. A typical Linux distribution comprises a Linux kernel, GNU tools and libraries, additional software, documentation, a window system (the most common being the X Window System), a window manager, and a desktop environment. Most Linux systems are open-source software made available both as compiled binaries and in source code form, allowing modifications to the original software. Over three hundred distributions are in active development, including commercially backed distributions (such as Fedora, openSUSE and Ubuntu) and community-driven distributions (such as Debian, Slackware, Gentoo and Arch Linux).

Linux Distributions

Amazon Web Services (AWS), is a collection of remote computing services, also called web services, that make up a cloud-computing platform  operated from 11 geographical regions across the world. The most central and well-known of these services include Amazon Elastic Compute Cloud, also known as "EC2", and Amazon Simple Storage Service, also known as "S3". Other services include Elastic MapReduce (EMR), Route 53 (a DNS web service),  provides a highly available and scalable Domain Name System (DNS) web service, Virtual Private Cloud (VPC), storage, database, deployment and application services.

Linux is a UNIX-like open source operating system with hundreds of distinct distributions, including: Fedora, openSUSE, Ubuntu, Debian, Slackware, Gentoo, CentOS, and Arch Linux. Linux is generally associated with web and database servers, but has become popular in many niche industries and applications.