Express middleware "express-session"란 무엇인가?

express-session


express-session란 ?
'express-session' 은 서버가 web sessions를 사용할 수 있게 해주는 middleware 이다.
* express-session middleware는 cookie-parser이 먼저 선언되어 있어야 사용 할 수 있다. 

 express-session의 사용 형태
var express = require('express');
var app = express();
var cookieParser = require('cookie-parser');
app.use(cookieParser());
var session = require('express-session');
app.use(session({
    secret:'keyboard cat',
    cookie: {secure:true}
        ...
});
express-session 의 옵션들
  • key: Cookie name, defaulting to connect.sid
  • store: Session store instance, usually a Redis object 
  • secret: Used to sign the session cookie, to prevent tampering; usually just a random string
  • cookie: Session cookie settings, defaulting to { path: '/', httpOnly: true, maxAge: null }
  • proxy: Boolean that indicates whether to trust the reverse proxy when setting secure cookies (via "X-Forwarded-Proto")
  • saveUninitialized: Boolean that forces the saving of a new session (default is true)
  • unset: Controls if you want to keep the session in the store after unsetting the session with possible values keep and destroy (default is keep)
  • resave: Boolean that forces the saving of the unmodified session (default is true)
  • rolling: Boolean that sets a new cookie on each request which resets the expiration (default is false)
  • genid: A function that generates session ID (default is uid2:https://www.npmjs.org/package/uid2, https://github.com/coreh/uid2)


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