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It takes 113 servers to run Google Calendar

Thanks to Tony Ruscoe who did some digging around Google Calendar, we have a "changes" file meant for internal eyes only.  The file he posts is mirrored since Google removed the changes file soon after it was discovered.

Thanks to Tony Ruscoe who did some digging around Google Calendar, we have a "changes" file meant for internal eyes only.  The file he posts is mirrored since Google removed the changes file soon after it was discovered.

"Logs estimate: I count about 317 records/day/server. I see on average about 1.4 clienterror-count entries/record so therefore 20 + 8 + 2 * 8 (1.4) ~ 50.4 bytes/record. Hence 15.9k bytes/day/server * 113 servers ~ 1.8Mb/day extra to temp logs. This is uncompressed."

In addition to the changes file, he also found a button that will let you search "public events" and some strange links at the top labelled "Google Internal IP Visible Info:".