Freaks City

This document outlines the various business logic operations handled by a chat server, including essential functionalities like heartbeats, user registration, login, friend management, profile updates, group operations, and real-time messaging. Data Packet Structure All data packets are prefixed with a business id followed by a sequence number, ...

CacheManager The cache manager stores caches for notification messages and chat messages. Because users may be offline, when a friend sends a message or a group mesage is sent, those messages cannot be delivered to the user. Therefore, messages are first sent to the cache manager. When the user comes online, the cached messages are pushed to th ...