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I am trying to get a hang of Connect's Session middleware, and I would like to know the difference between: Session.regenerate() vs Session.reload().
Specifically, I checked the docs, and no explanation was given about what session reload actually does. Similarly, I am also confused about Session.save() method. Any help greatly appreciated!
289
The session middleware handles all things for us, i.e., creating the session, setting the session cookie and creating the session object in req object. Whenever we make a request from the same client again, we will have their session information stored with us (given that the server was not restarted).
It helps in saving the data in the key-value form. In this module, the session data is not saved in the cookie itself, just the session ID. Installation of express-session module: You can visit the link Install express-session module.
By default, express-session creates a new MemoryStore instance for storing session data in server. However, in production, it is not recommended to use the default memory store, as mentioned in the official documentation. We should use other modules, such as connect-redis , a Redis-based session store.
It contains only an encrypted ID that is used by the server to identify which session object corresponds with that user. Session data is then only available on the server itself which further insulates it from some types of attacks.
Comparing the source code for the 2 functions:
store.js
Store.prototype.regenerate = function(req, fn){
var self = this;
this.destroy(req.sessionID, function(err){
self.generate(req);
fn(err);
});
};
and
session.js
defineMethod(Session.prototype, 'reload', function reload(fn) {
var req = this.req
, store = this.req.sessionStore;
store.get(this.id, function(err, sess){
if (err) return fn(err);
if (!sess) return fn(new Error('failed to load session'));
store.createSession(req, sess);
fn();
});
return this;
});
I read it as "get the session if it exists or create one" vs "destroy the previous and give me a new one".
171
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