Its interesting to see the increase in number of times I have been served the "Server is too busy message" over the past few days.
I say interesting, only in so far as to serve even this basic static (IE: no database driven content) page the server undergoes some, albeit minimal, load.
Now the only difference between that page and the requested one will be, for the most part, extra text which has to be retrieved from the sites database server. The extra text itself "costs" next to nothing in bandwidth to serve or process - the problem would be getting it from the database.
In an attempt, I presume, I to stop the thing falling over there is some load balancing which serves this static page rather than going to the DB and getting the rest of the requested page.
As I am struggling to believe the load has increased so much in the past week I would hazard a guess that the script which does the load balancing may need tweaking!
Just my two penneth worth as a software engineer; as opposed to you lucky sole who get paid to fly!!