1.連接mongoDB
https://blog.csdn.net/oak160/article/details/79571906
2.設置redis與session
https://www.cnblogs.com/samsimi/p/6547452.html
涉及到的指令
//mongodb內(nèi)容
npm install --save koa //koa安裝
npm install --save koa-bodyparser //koa的參數(shù)解析中間件
npm install --save koa2-cors //koa的跨域中間件
npm install --save koa-router //koa的路由映射
npm install --save mongodb //mongodb
npm install --save mongoose //mongoose
//redis與session內(nèi)容
npm install --save koa2-cookie-session //koa2-cookie-session,替代express-session
npm install --save koa-session-redis //koa-session-redis session存到redis
npm install --save ioredis //連接redis
