"Fortnite hit a new peak of 3.4 million concurrent players last Sunday… and that

“Fortnite hit a new peak of 3.4 million concurrent players last Sunday… and that didn’t come without issues! This blog post aims to share technical details about the challenges of rapidly scaling a game and its online services far beyond our wildest growth expectations.”

“The extreme load caused 6 different incidents between Saturday and Sunday, with a mix of partial and total service disruptions to Fortnite.”

And an older postmortem, too.