CASE STUDY The Challenge Dwango’s Nico-Nico Douga service is a popular Japanese video-sharing site with 1.5 million paid subscribers and over 26 million registered users. It is one of the most visited websites in Japan. As Dwango’s video-sharing business grew, scaling its video-hosting caching tier became problematic. Nico-Nico Infrastructure Manager T etsuya Sato realized Dwango needed a solution that could address the following challenges:

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