// TOPIC
#media
3 articles
◆◆◆AdvancedTwitchYouTube
01Design a Live Streaming System (Twitch)
Ingest one broadcaster and fan out to millions of viewers with seconds of latency. Transcoding ladders, HLS/DASH segmenting, CDN fan-out, and live chat.
#interview#media#streaming
22 min◆◆◆AdvancedZoomGoogle
02Design a Video Conferencing System (Zoom)
Carry live audio/video among many participants with low latency. WebRTC, the SFU vs MCU vs mesh trade-off, simulcast, and adaptive bitrate.
#interview#realtime#media
21 min◆◆◆AdvancedMetaInstagram
03Design Instagram (photo sharing)
A photo-first social network — uploads, image processing, feed, stories, and global delivery.
#interview#feed#storage
18 min