{"type":"excalidraw","version":2,"source":"https://AwesomeSystemDesign.dev","elements":[{"angle":0,"strokeColor":"#c2c8d1","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1,"strokeStyle":"dashed","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":[],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-58","type":"line","seed":4275,"x":126,"y":110.8,"width":0,"height":1281.9000000000003,"points":[[0,0],[0,1281.9000000000003]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":null,"elbowed":false,"line":true,"customData":{"revealStep":0}},{"angle":0,"strokeColor":"#c2c8d1","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1,"strokeStyle":"dashed","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":[],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-59","type":"line","seed":4348,"x":364,"y":110.8,"width":0,"height":1281.9000000000003,"points":[[0,0],[0,1281.9000000000003]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":null,"elbowed":false,"line":true,"customData":{"revealStep":0}},{"angle":0,"strokeColor":"#c2c8d1","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1,"strokeStyle":"dashed","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":[],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-60","type":"line","seed":4421,"x":602,"y":110.8,"width":0,"height":1281.9000000000003,"points":[[0,0],[0,1281.9000000000003]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":null,"elbowed":false,"line":true,"customData":{"revealStep":0}},{"angle":0,"strokeColor":"#c2c8d1","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1,"strokeStyle":"dashed","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":[],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-61","type":"line","seed":4494,"x":840,"y":110.8,"width":0,"height":1281.9000000000003,"points":[[0,0],[0,1281.9000000000003]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":null,"elbowed":false,"line":true,"customData":{"revealStep":0}},{"angle":0,"strokeColor":"#c2c8d1","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1,"strokeStyle":"dashed","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":[],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-62","type":"line","seed":4567,"x":1078,"y":110.8,"width":0,"height":1281.9000000000003,"points":[[0,0],[0,1281.9000000000003]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":null,"elbowed":false,"line":true,"customData":{"revealStep":0}},{"angle":0,"strokeColor":"#c2c8d1","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1,"strokeStyle":"dashed","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":[],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-63","type":"line","seed":4640,"x":1316,"y":110.8,"width":0,"height":1281.9000000000003,"points":[[0,0],[0,1281.9000000000003]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":null,"elbowed":false,"line":true,"customData":{"revealStep":0}},{"angle":0,"strokeColor":"#c2c8d1","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1,"strokeStyle":"dashed","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":[],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-64","type":"line","seed":4713,"x":1554,"y":110.8,"width":0,"height":1281.9000000000003,"points":[[0,0],[0,1281.9000000000003]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":null,"elbowed":false,"line":true,"customData":{"revealStep":0}},{"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-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":28,"width":192,"height":82.8,"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":57.699999999999996,"width":152,"height":23.400000000000002,"fontSize":18,"fontFamily":1,"text":"User A","originalText":"User A","textAlign":"center","verticalAlign":"middle","containerId":"shape-0","lineHeight":1.3,"autoResize":false,"customData":{"revealStep":1}},{"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-3"}],"updated":0,"link":null,"locked":false,"id":"shape-2","type":"rectangle","seed":187,"x":268,"y":28,"width":192,"height":82.8,"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-3","type":"text","seed":260,"x":288,"y":57.699999999999996,"width":152,"height":23.400000000000002,"fontSize":18,"fontFamily":1,"text":"WS Gateway A","originalText":"WS Gateway A","textAlign":"center","verticalAlign":"middle","containerId":"shape-2","lineHeight":1.3,"autoResize":false,"customData":{"revealStep":1}},{"angle":0,"strokeColor":"#a68a53","backgroundColor":"#fff7e6","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-5"}],"updated":0,"link":null,"locked":false,"id":"shape-4","type":"rectangle","seed":333,"x":506,"y":28,"width":192,"height":82.80000000000001,"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-5","type":"text","seed":406,"x":526,"y":46,"width":152,"height":46.800000000000004,"fontSize":18,"fontFamily":1,"text":"Message\nService","originalText":"Message\nService","textAlign":"center","verticalAlign":"middle","containerId":"shape-4","lineHeight":1.3,"autoResize":false,"customData":{"revealStep":1}},{"angle":0,"strokeColor":"#9180ac","backgroundColor":"#f4effb","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-7"}],"updated":0,"link":null,"locked":false,"id":"shape-6","type":"rectangle","seed":479,"x":744,"y":28,"width":192,"height":82.8,"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-7","type":"text","seed":552,"x":764,"y":57.699999999999996,"width":152,"height":23.400000000000002,"fontSize":18,"fontFamily":1,"text":"Push Service","originalText":"Push Service","textAlign":"center","verticalAlign":"middle","containerId":"shape-6","lineHeight":1.3,"autoResize":false,"customData":{"revealStep":1}},{"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-1"],"frameId":null,"roundness":null,"boundElements":[{"type":"text","id":"shape-9"}],"updated":0,"link":null,"locked":false,"id":"shape-8","type":"rectangle","seed":625,"x":982,"y":28,"width":192,"height":82.8,"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-9","type":"text","seed":698,"x":1002,"y":57.699999999999996,"width":152,"height":23.400000000000002,"fontSize":18,"fontFamily":1,"text":"User B (offline)","originalText":"User B (offline)","textAlign":"center","verticalAlign":"middle","containerId":"shape-8","lineHeight":1.3,"autoResize":false,"customData":{"revealStep":1}},{"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-11"}],"updated":0,"link":null,"locked":false,"id":"shape-10","type":"rectangle","seed":771,"x":1220,"y":28,"width":192,"height":82.8,"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-11","type":"text","seed":844,"x":1240,"y":57.699999999999996,"width":152,"height":23.400000000000002,"fontSize":18,"fontFamily":1,"text":"Cassandra","originalText":"Cassandra","textAlign":"center","verticalAlign":"middle","containerId":"shape-10","lineHeight":1.3,"autoResize":false,"customData":{"revealStep":1}},{"angle":0,"strokeColor":"#a68a53","backgroundColor":"#fff7e6","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-13"}],"updated":0,"link":null,"locked":false,"id":"shape-12","type":"rectangle","seed":917,"x":1458,"y":28,"width":192,"height":82.8,"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-13","type":"text","seed":990,"x":1478,"y":57.699999999999996,"width":152,"height":23.400000000000002,"fontSize":18,"fontFamily":1,"text":"Kafka","originalText":"Kafka","textAlign":"center","verticalAlign":"middle","containerId":"shape-12","lineHeight":1.3,"autoResize":false,"customData":{"revealStep":1}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-2"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-14","type":"rectangle","seed":1063,"x":141,"y":143.8,"width":208,"height":30.1,"customData":{"revealStep":2}},{"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-2"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-15","type":"text","seed":1136,"x":147,"y":146.8,"width":196,"height":22.1,"fontSize":17,"fontFamily":1,"text":"1. MSG","originalText":"1. MSG","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":2}},{"angle":0,"strokeColor":"#6577aa","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-2"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-16","type":"arrow","seed":1209,"x":126,"y":180.9,"width":238,"height":0,"points":[[0,0],[238,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":2}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-3"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-17","type":"rectangle","seed":1282,"x":379,"y":217.9,"width":208,"height":30.1,"customData":{"revealStep":3}},{"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-3"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-18","type":"text","seed":1355,"x":385,"y":220.9,"width":196,"height":22.1,"fontSize":17,"fontFamily":1,"text":"2. validate","originalText":"2. validate","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":3}},{"angle":0,"strokeColor":"#6577aa","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-3"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-19","type":"arrow","seed":1428,"x":364,"y":255,"width":238,"height":0,"points":[[0,0],[238,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":3}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-4"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-20","type":"rectangle","seed":1501,"x":617,"y":292,"width":684,"height":30.1,"customData":{"revealStep":4}},{"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-4"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-21","type":"text","seed":1574,"x":623,"y":295,"width":672,"height":22.1,"fontSize":17,"fontFamily":1,"text":"3. persist","originalText":"3. persist","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":4}},{"angle":0,"strokeColor":"#6577aa","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-4"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-22","type":"arrow","seed":1647,"x":602,"y":329.1,"width":714,"height":0,"points":[[0,0],[714,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":4}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-5"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-23","type":"rectangle","seed":1720,"x":379,"y":366.1,"width":208,"height":30.1,"customData":{"revealStep":5}},{"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-5"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-24","type":"text","seed":1793,"x":385,"y":369.1,"width":196,"height":22.1,"fontSize":17,"fontFamily":1,"text":"4. ACK (sent)","originalText":"4. ACK (sent)","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":5}},{"angle":0,"strokeColor":"#9180ac","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-5"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-25","type":"arrow","seed":1866,"x":602,"y":403.20000000000005,"width":238,"height":0,"points":[[0,0],[-238,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":5}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-6"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-26","type":"rectangle","seed":1939,"x":141,"y":440.20000000000005,"width":208,"height":30.1,"customData":{"revealStep":6}},{"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-6"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-27","type":"text","seed":2012,"x":147,"y":443.20000000000005,"width":196,"height":22.1,"fontSize":17,"fontFamily":1,"text":"5. ACK","originalText":"5. ACK","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":6}},{"angle":0,"strokeColor":"#9180ac","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-6"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-28","type":"arrow","seed":2085,"x":364,"y":477.30000000000007,"width":238,"height":0,"points":[[0,0],[-238,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":6}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-7"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-29","type":"rectangle","seed":2158,"x":617,"y":514.3000000000001,"width":208,"height":52.2,"customData":{"revealStep":7}},{"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-7"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-30","type":"text","seed":2231,"x":623,"y":517.3000000000001,"width":196,"height":44.2,"fontSize":17,"fontFamily":1,"text":"6. lookup B\nB is OFFLINE","originalText":"6. lookup B\nB is OFFLINE","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":7}},{"angle":0,"strokeColor":"#6577aa","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-7"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-31","type":"arrow","seed":2304,"x":602,"y":573.5000000000001,"width":238,"height":0,"points":[[0,0],[238,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":7}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"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-32","type":"rectangle","seed":2377,"x":617,"y":610.5000000000001,"width":922,"height":52.2,"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-33","type":"text","seed":2450,"x":623,"y":613.5000000000001,"width":910,"height":44.2,"fontSize":17,"fontFamily":1,"text":"7. enqueue for\noffline delivery","originalText":"7. enqueue for\noffline delivery","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":8}},{"angle":0,"strokeColor":"#6577aa","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"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-34","type":"arrow","seed":2523,"x":602,"y":669.7000000000002,"width":952,"height":0,"points":[[0,0],[952,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":8}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-9"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-35","type":"rectangle","seed":2596,"x":617,"y":706.7000000000002,"width":208,"height":30.1,"customData":{"revealStep":9}},{"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-9"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-36","type":"text","seed":2669,"x":623,"y":709.7000000000002,"width":196,"height":22.1,"fontSize":17,"fontFamily":1,"text":"8. push notify","originalText":"8. push notify","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":9}},{"angle":0,"strokeColor":"#6577aa","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-9"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-37","type":"arrow","seed":2742,"x":602,"y":743.8000000000002,"width":238,"height":0,"points":[[0,0],[238,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":9}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-10"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-38","type":"rectangle","seed":2815,"x":855,"y":780.8000000000002,"width":208,"height":52.2,"customData":{"revealStep":10}},{"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-10"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-39","type":"text","seed":2888,"x":861,"y":783.8000000000002,"width":196,"height":44.2,"fontSize":17,"fontFamily":1,"text":"9. APNs/FCM\n\"A: hello\"","originalText":"9. APNs/FCM\n\"A: hello\"","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":10}},{"angle":0,"strokeColor":"#6577aa","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-10"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-40","type":"arrow","seed":2961,"x":840,"y":840.0000000000002,"width":238,"height":0,"points":[[0,0],[238,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":10}},{"angle":0,"strokeColor":"#a68a53","backgroundColor":"#fff7e6","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.7,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-11"],"frameId":null,"roundness":null,"boundElements":[{"type":"text","id":"shape-42"}],"updated":0,"link":null,"locked":false,"id":"shape-41","type":"rectangle","seed":3034,"x":34,"y":880.0000000000002,"width":660,"height":68,"customData":{"revealStep":11}},{"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-11"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-42","type":"text","seed":3107,"x":54,"y":902.9500000000003,"width":620,"height":22.1,"fontSize":17,"fontFamily":1,"text":"[ Later: User B comes online ]","originalText":"[ Later: User B comes online ]","textAlign":"left","verticalAlign":"middle","containerId":"shape-41","lineHeight":1.3,"autoResize":false,"customData":{"revealStep":11}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-12"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-43","type":"rectangle","seed":3180,"x":617,"y":975.0000000000002,"width":446,"height":30.1,"customData":{"revealStep":12}},{"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-12"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-44","type":"text","seed":3253,"x":623,"y":978.0000000000002,"width":434,"height":22.1,"fontSize":17,"fontFamily":1,"text":"10. B connects","originalText":"10. B connects","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":12}},{"angle":0,"strokeColor":"#9180ac","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-12"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-45","type":"arrow","seed":3326,"x":1078,"y":1012.1000000000003,"width":476,"height":0,"points":[[0,0],[-476,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":12}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-13"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-46","type":"rectangle","seed":3399,"x":617,"y":1049.1000000000004,"width":446,"height":52.2,"customData":{"revealStep":13}},{"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-13"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-47","type":"text","seed":3472,"x":623,"y":1052.1000000000004,"width":434,"height":44.2,"fontSize":17,"fontFamily":1,"text":"11. deliver queued\nmessages","originalText":"11. deliver queued\nmessages","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":13}},{"angle":0,"strokeColor":"#6577aa","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-13"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-48","type":"arrow","seed":3545,"x":602,"y":1108.3000000000004,"width":476,"height":0,"points":[[0,0],[476,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":13}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-14"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-49","type":"rectangle","seed":3618,"x":617,"y":1145.3000000000004,"width":446,"height":30.1,"customData":{"revealStep":14}},{"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-14"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-50","type":"text","seed":3691,"x":623,"y":1148.3000000000004,"width":434,"height":22.1,"fontSize":17,"fontFamily":1,"text":"12. ACK delivered","originalText":"12. ACK delivered","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":14}},{"angle":0,"strokeColor":"#9180ac","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-14"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-51","type":"arrow","seed":3764,"x":1078,"y":1182.4000000000003,"width":476,"height":0,"points":[[0,0],[-476,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":14}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-15"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-52","type":"rectangle","seed":3837,"x":379,"y":1219.4000000000003,"width":208,"height":30.1,"customData":{"revealStep":15}},{"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-15"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-53","type":"text","seed":3910,"x":385,"y":1222.4000000000003,"width":196,"height":22.1,"fontSize":17,"fontFamily":1,"text":"13. status","originalText":"13. status","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":15}},{"angle":0,"strokeColor":"#9180ac","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-15"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-54","type":"arrow","seed":3983,"x":602,"y":1256.5000000000002,"width":238,"height":0,"points":[[0,0],[-238,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":15}},{"angle":0,"strokeColor":"transparent","backgroundColor":"#fbfbf8","fillStyle":"solid","strokeWidth":0,"strokeStyle":"solid","roughness":0,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-16"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-55","type":"rectangle","seed":4056,"x":141,"y":1293.5000000000002,"width":208,"height":52.2,"customData":{"revealStep":16}},{"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-16"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-56","type":"text","seed":4129,"x":147,"y":1296.5000000000002,"width":196,"height":44.2,"fontSize":17,"fontFamily":1,"text":"14. STATUS\n\"delivered\"","originalText":"14. STATUS\n\"delivered\"","textAlign":"center","verticalAlign":"middle","containerId":null,"lineHeight":1.3,"autoResize":false,"customData":{"revealStep":16}},{"angle":0,"strokeColor":"#9180ac","backgroundColor":"transparent","fillStyle":"solid","strokeWidth":1.5,"strokeStyle":"solid","roughness":0.4,"opacity":100,"version":1,"versionNonce":1,"isDeleted":false,"groupIds":["step-16"],"frameId":null,"roundness":null,"boundElements":null,"updated":0,"link":null,"locked":false,"id":"shape-57","type":"arrow","seed":4202,"x":364,"y":1352.7000000000003,"width":238,"height":0,"points":[[0,0],[-238,0]],"lastCommittedPoint":null,"startBinding":null,"endBinding":null,"startArrowhead":null,"endArrowhead":"arrow","elbowed":false,"customData":{"revealStep":16}}],"appState":{"viewBackgroundColor":"#fbfbf8","gridSize":null},"files":{}}