Get a Free System Design PDF with 158 pages by subscribing to our weekly newsletter: https://bit.ly/bytebytegoytTopic This video is based on engineering blog post: https://blog.hotstar.com/capturing-a-billion-emojis-62114cc0b440 Animation tools: Adobe Illustrator and After Effects. Checkout our bestselling System Design Interview books: Volume 1: https://amzn.to/3Ou7gkd Volume 2: https://amzn.to/3HqGozy The digital version of System Design Interview books: https://bit.ly/3mlDSk9 ABOUT US: Covering topics and trends in large-scale system design, from the authors of the best-selling System Design Interview series.