Scaling lessons learned at Dropbox, part 1
eranki.tumblr.com
JULY 13, 2012
Another thing that became increasingly useful was to have thousands of custom stats aggregated over thousands of servers graphed. GeoIP for mapping IPs to locations. As an idea, you could have a server that just sits there and plays back 10% of your read-only logs at your frontend and can be switched off as necessary. Pretty standard.
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