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Site performance optimization due to bad sql quiries

The project is about an online shop, built in Joomla 2.5.4 and Virtuemart 2.0.6 with a template from Templatemonsters.com.

The database includes 15.000 products and 1350 categories, in 3 languages.

Issues:

First page opens in about 15 to 35 secs. Other pages in about 16 seconds.

There are some sql queries that seem to load the whole database sometimes and look like they are in a loop, causing very low performance, timeouts and server overloads.

Notice: Google has cached some pages that have expired. Although they crawl the server using the cached links that are no longer exist. While this happens, most times the program lands to a page that reads all the records, causing server overload as well.

Need:

Find and replace the sql queries to avoid useless loads. Improve better performance using page caching, page compression, css & js compression, site optimization. Get rid of bad crawler requests.

Main page www.aroma99.com (this has 15.000 products - 500 published)

A copy of the site at www.shop99.gr (this has 15.000 products - all published - not cached by google's bot yet)

Færdigheder: MySQL, PHP, Virtuemart, Hjemmeside Testning

Se mere: online shop joomla template, js products, online optimization, database caching, online website crawler, sql queries, sql database improve, Performance testing , database performance , database optimization, compression online, online load testing, need performance testing, optimization database, joomla website optimization, online program testing, replace sql amp, improve performance, php google sql crawler, sql database crawler php, page load optimization, css online shop, better virtuemart css, online testing project joomla, project server 2013

Om arbejdsgiveren:
( 1 bedømmelse ) LONDON, Greece

Projekt-ID: #4088651

6 freelancere byder i gennemsnit $389 for dette job

gopalvora

ready to start Thanks

$600 USD in 8 dage
(138 bedømmelser)
6.7
Ajcm623

hello i have gone through your requirement let me know if u are interested to discuss further thank u

$300 USD in 7 dage
(43 bedømmelser)
5.8
kirilpanchev

Dear sir, I have over 10 years of experience in Web Development and Linux Administration including PHP, Smarty, MySQL, jQuery, etc. Expert in optimization. Also I am Zend Certified PHP Developer (ZCE). I can help you o Mere

$300 USD in 3 dage
(28 bedømmelser)
4.4
voja15

Hello, I have more than 5 years of experience in web design and development, so I can complete the job with quality. Also, I have experience in fixing speed problems in Joomla.

$385 USD in 7 dage
(15 bedømmelser)
4.4
technofreakz

I am a Linux Consultant..

$250 USD in 2 dage
(18 bedømmelser)
4.1
webdevit

php/mysql team

$500 USD in 5 dage
(6 bedømmelser)
2.6