We have now a 500 error on a magento 1.4.2 with 6 shops
After installing and enabling GTmetrix / GTspeed website speed went up from 9 to 3 seconds.
However, after a day site slowed down (response time) to 30 seconds.
After enabling GTspeed's "Header Expiring" suddenly an Error 500 appears.
A. Get our sites back online again ASAP
B. A sustainable solution to bring back speed to approx. 3 seconds (sustainable = lifetime of solution remains stable, even after adding more stores / categroies / products / images etc.)
We have a dedicated cloud server with ubuntu10.4/[url removed, login to view]
Please note nginx is/was also installed but didn't live up to our expectations after increasing sql db with more categories and products.
If any qietions in front please let me know
22 freelancers are bidding on average $34/hour for this job
Professional web developer here with advanced knowledge of website optimization. I can fix your website and get it online again, and also re-optimize it. Please send me your website address. Thanks