A key principle of the live-service design is server-authoritative data. This means that persistent player data needs to be stored in a remote database, not the player’s local machine. One especially heavy piece of our backend architecture that made this possible was the inventory service. The term “inventory” here is a bit overloaded given just how many of the game’s systems use it. In Towerborne nearly every piece of persistent player data is part of the inventory. Beyond traditional inventory items like weapons and gear, the inventory also includes stats, quest state, conversation history, achievement progress, and more.
最直观的是营销成本失控。完美日记的增长高度依赖营销投放，营销费用率常年居高不下，甚至一度超过 60%。随着小红书、抖音等平台流量成本逐年攀升，获客成本成倍上涨，烧钱换增长的模式在资本退潮、市场冷静的背景下，失去了可持续性。
，更多细节参见91视频
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The weight of each term is given by the proportion of each sub-triangle area with respect to the total triangle area . Algebraically, this can be expressed like so: