When a Startup's S3 Suddenly Slowed: Raj's Midnight Panic

https://www.4shared.com/s/fNZfljlIjfa

When a single marketing email turned our static assets into a traffic battleground It was 2:17 a.m. when my pager screamed. Raj, the product lead, had just sent a routine promotional email to a modest list of 40,000 users