{"type":"excalidraw","version":2,"source":"https://AwesomeSystemDesign.dev","elements":[{"angle":0,"strokeColor":"#628572","backgroundColor":"#edf5ee","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.7,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-1"],"frameId":null,"roundness":null,"boundElements":[{"type":"text","id":"shape-1"}],"updated":0,"link":null,"locked":false,"id":"shape-0","type":"rectangle","seed":41,"x":30,"y":30,"width":420,"height":68,"customData":{"revealStep":1}},{"angle":0,"strokeColor":"#394557","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.7,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-1"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-1","type":"text","seed":114,"x":50,"y":52.3,"width":380,"height":23.400000000000002,"fontSize":18,"fontFamily":1,"text":"ABR 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selectQuality(availableBandwidth):\nqualities = [\n{res: \"240p\", bitrate: 400_000},\n{res: \"360p\", bitrate: 800_000},\n{res: \"480p\", bitrate: 1_500_000},\n{res: \"720p\", bitrate: 3_000_000},\n{res: \"1080p\", bitrate: 6_000_000},\n{res: \"4K\", bitrate: 16_000_000},","originalText":"function selectQuality(availableBandwidth):\nqualities = [\n{res: \"240p\", bitrate: 400_000},\n{res: \"360p\", bitrate: 800_000},\n{res: \"480p\", bitrate: 1_500_000},\n{res: \"720p\", bitrate: 3_000_000},\n{res: \"1080p\", bitrate: 6_000_000},\n{res: \"4K\", bitrate: 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Pick highest quality that fits in 80% of bandwidth\n// (20% buffer to prevent rebuffering)\nsafeBandwidth = availableBandwidth * 0.8","originalText":"// Pick highest quality that fits in 80% of bandwidth\n// (20% buffer to prevent rebuffering)\nsafeBandwidth = availableBandwidth * 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algorithms (Netflix):\nBuffer-based: use buffer level (not just bandwidth)\nMPC (Model Predictive Control): predict future bandwidth\nThroughput history: weighted avg of last N segments\nBuffer + throughput hybrid (most common in production)","originalText":"Advanced algorithms (Netflix):\nBuffer-based: use buffer level (not just bandwidth)\nMPC (Model Predictive Control): predict future bandwidth\nThroughput history: weighted avg of last N segments\nBuffer + throughput hybrid (most common in production)","textAlign":"left","verticalAlign":"middle","containerId":"shape-12","lineHeight":1.3,"autoResize":false,"customData":{"revealStep":7}},{"angle":0,"strokeColor":"#6577aa","backgroundColor":"#eef1fc","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.7,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-8"],"frameId":null,"roundness":null,"boundElements":[{"type":"text","id":"shape-15"}],"updated":0,"link":null,"locked":false,"id":"shape-14","type":"rectangle","seed":1063,"x":30,"y":1021.0000000000001,"width":554.8738000000001,"height":153,"customData":{"revealStep":8}},{"angle":0,"strokeColor":"#394557","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.7,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-8"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-15","type":"text","seed":1136,"x":50,"y":1039,"width":514.8738000000001,"height":117,"fontSize":18,"fontFamily":1,"text":"Netflix's 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