November 4, 2006 at 22:23Optimizer Secrets
Since I am not doing this, I am only preparing the ground for their work, I am writing what is known to some, but to many interesting.
1) Last-Modified and If-Modified-Since headers.
For proper indexing by your site’s search engines, each page should produce a Last-Modified header and correctly process requests with the If-Modified-Since clause. If the page has not changed since the time specified in the request, the server should issue “HTTP / 1.1 304 Not Modified.”
An example php code for the simplest case when the script contains all the data:
Insert at the top of each page.
2) Gzip compression
Significantly reduces page loading time.
Php code, insert the first line:
3) Proper browser caching of images
Pictures should be cached for at least a month. For an HTTP image request, a caption should be issued like "Cache-Control: max-age = 999999"
To do this, insert
in .htaccess at the root of the site.
For those who do not have the module loaded, add
to the begining.
4) Fix a problem with "Options + MultiViews"
For those who use "Options + MultiViews" - problems with search engines are possible. With the default settings in Apache, he has problems with selecting a file (php scripts do not have a mime-type). Insert a cure for this problem.
in .htaccess at the root of the site.
5) Mirrors
If your site has a mirror, to avoid a possible ban in search engines, insert
in robots.txt at the root of the site.
6) Hosts www.site.ru and site.ru
At the site.ru address, the header “HTTP / 1.1 301 Moved Permanently” should be issued. For example, there will be a correct calculation of the TIC.
7) Add yours :-)
1) Last-Modified and If-Modified-Since headers.
For proper indexing by your site’s search engines, each page should produce a Last-Modified header and correctly process requests with the If-Modified-Since clause. If the page has not changed since the time specified in the request, the server should issue “HTTP / 1.1 304 Not Modified.”
An example php code for the simplest case when the script contains all the data:
header ("Last-Modified:". gmdate ("D, d MYH: i: s", filemtime ($ _ SERVER ['SCRIPT_FILENAME'])). "GMT");
Insert at the top of each page.
Added: In other cases, instead of “filemtime ($ _ SERVER ['SCRIPT_FILENAME'])”, the last date of the change in the data displayed on this page must be substituted.
2) Gzip compression
Significantly reduces page loading time.
Php code, insert the first line:
ob_start ('ob_gzhandler');
3) Proper browser caching of images
Pictures should be cached for at least a month. For an HTTP image request, a caption should be issued like "Cache-Control: max-age = 999999"
To do this, insert
ExpiresActive On
ExpiresByType image / gif “access plus 3 month”
ExpiresByType image / jpeg “access plus 3 month”
in .htaccess at the root of the site.
For those who do not have the module loaded, add
LoadModule expires_module libexec / mod_expires.so
AddModule mod_expires.c
to the begining.
4) Fix a problem with "Options + MultiViews"
For those who use "Options + MultiViews" - problems with search engines are possible. With the default settings in Apache, he has problems with selecting a file (php scripts do not have a mime-type). Insert a cure for this problem.
AddType text / html php
in .htaccess at the root of the site.
5) Mirrors
If your site has a mirror, to avoid a possible ban in search engines, insert
User-Agent: *
Host: www.site.ru
in robots.txt at the root of the site.
6) Hosts www.site.ru and site.ru
At the site.ru address, the header “HTTP / 1.1 301 Moved Permanently” should be issued. For example, there will be a correct calculation of the TIC.
7) Add yours :-)