Low-resource Hit Counter For Busy Site?
I have a site which is getting over 250,000 hits a day and I'm wondering what the least resource-intensive method would be to count hits per day.
I originally had a script that wrote a timestamp, visitor IP and referring url to a text file using fwrite().
My hosting company has since told me that the server was going nuts when the traffic started rising so I had to disable the script.
I'd like a script that updates a single figure and starts a new line every 24 hours if possible, but I'm unsure of the most economical PHP method for this.
I'd like to record it in a text file.
Can anyone offer any wisdom?