大型互联网电商平台业务，技术与架构，包括平台+内容型电商， 代表包括淘宝、京东、快手，内容涵盖电商系统建设的各个维度，按照业务域方式进行拆分。
电商的本质是零售。
https://processon.com/view/5a95abffe4b046e1c332d7d5#map
https://processon.com/view/5a95abffe4b046e1c332d7d5#outline
https://github.com/DuHouAn/MCard
https://github.com/gupei2015/marketing-coupon/
https://github.com/caisl/activity-platform
https://github.com/Notelzg/mall/tree/dev/coupon-service
https://github.com/Notelzg/mall/tree/dev
https://github.com/xubinux/xbin-store
https://github.com/roirrow/rule
https://github.com/tpiekarski/coupon-engine
https://github.com/lgminh/PromotionRuleShoppingCart
https://github.com/13shivam/promotionengine
https://github.com/Anuradha-Khadanga123/PromotionRuleEngine
https://github.com/YornSopheaktra/promotionAggregator
https://github.com/monpro/distributed-coupon-system
https://github.com/xuqinghua91/awesome-delay-queue
https://github.com/bingoohuang/delayqueue
https://github.com/smallFive55/delayMessage