I would like to know how sites like the following perform distributed website monitoring (from multiple checkpoints/countries). pingdom.com, site24x7.com, uptrends.com, siteuptime.com, etc, etc. To ...
I am on LAMP with Alternative PHP Cache. It worked fine until yesterday when I updated the website and changed a few mySQL queries (I don't see the how it would affect APC opcode cache) Today I see ...