redisess

Redisess

High performant advanced Redis session manager for NodeJS.

Installation

Redisess requires "ioredis" library to work. It has been tested for redis, node-redis and ioredis client libraries.

$ npm install ioredis redisess --save

Basic Usage

The example blow show how can you use Redisess in a simple express applicaiton.

import express from 'express';
import Redis from 'ioredis';
import {SessionManager} from 'redisess';

const client = new Redis(); 

const manager = new SessionManager(client, {
    namespace: 'myapp',
    additionalFields: ['groupId'],
    ttl: 120 // Default Time-To-Live value in seconds: 120 seconds
  });

const app = express();
 
app.get('/login', async function (req, res) {
  const userName = req.query.userName;
  const pass = req.query.password;
  //...Login application logic here
  
  const session = await sm.create(userName, {
      ttl: 240, // You can overwrite ttl value per session
      groupId: 111 // You can store additional values
  }); 
  res.send('Your session id is '+session.sessionId);
});

app.get('/killSession/:sessionid', async function (req, res) {
  await sm.kill(req.params.sessionid); 
  res.send('Session ' + req.params.sessionid + ' is closed');
});

app.get('/killUser/:userId', async function (req, res) {
  await sm.killUser(req.params.userId); 
  res.send('All sessions for user "' + req.params.userId +'" are closed.');
})
 
app.listen(3000);

---

SessionManager

prototype.count()

Returns the number of sessions within the last n seconds. Get all session count if n is not defined or zero

count(secs: number = 0): Promise<number>

Parameters

• secs: The elapsed time since the last activity of the session. Returns total count of sessions If not defined or zero
• Return value : Returns the number of sessions.

---

prototype.countForUser()

Retrieves session count of single user which were active within the last n seconds.

countForUser(userId: string, secs: number = 0): Promise<number>

Parameters

• userId: Id of the user
• secs: The elapsed time since the last activity of the session. Returns total count of sessions If not defined or zero
• Return value : Returns the number of sessions.

---

prototype.create()

Creates a new session for the user

create(userId: string, props?: { ttl?: number, [index: string]: any }): Promise<Session>

Parameters

• userId: Id of the user
• props: Additional properties
  • ttl: Time-To-Live value in seconds
  • *...: Additional fields
• Return value : Returns new created session.

---

prototype.get()

Retrieves session by sessionId

get(sessionId: string, noUpdate: boolean = false): Promise<Session>

Parameters

• sessionId: Id of the session
• noUpdate: Update state of the session
• Return value : Returns new created session.

---

prototype.getAllSessions()

Retrieves all session ids which were active within the last n seconds.

getAllSessions(secs: number): Promise<string[]>

Parameters

• secs: The elapsed time since the last activity of the session. Returns total count of sessions If not defined or zero
• Return value : Returns the string array of all sessions.

---

prototype.getAllUsers()

Retrieves all user ids which were active within the last n seconds.

getAllUsers(secs: number): Promise<string[]>

Parameters

• secs: The elapsed time since the last activity of the session. Returns total count of sessions If not defined or zero
• Return value : Returns the string array of all users.

---

prototype.getUserSessions()

Retrieves session ids of single user which were active within the last n seconds.

getUserSessions(userId: string, n: number = 0): Promise<string[]>

Parameters

• userId: Id of the user
• n: The elapsed time since the last activity of the session.
• Return value : Returns the string array of all sessions for an user.

---

prototype.getOldestUserSession()

Retrieves oldest session of user

getOldestUserSession(userId: string, noUpdate: boolean = false): Promise<Session>

Parameters

• userId: Id of the user
• noUpdate: Update state of the session
• Return value : Returns new created session.

---

prototype.exists()

Returns true if sessionId exists, false otherwise

exists(sessionId: string): Promise<Boolean>

Parameters

• sessionId: Id of the session
• Return value : Returns Boolean.

---

prototype.kill()

Kills single session

kill(sessionId: string): Promise<void>

Parameters

• sessionId: Id of the session
• Return value : No return value.

---

prototype.killUser()

Kills all sessions of user

killUser(userId: string): Promise<void>

Parameters

• userId: Id of the user
• Return value : No return value.

---

prototype.killAll()

Kills all sessions for application

killAll(): Promise<void>

Parameters

• No parameter value
• Return value : No return value.

---

prototype.now()

Retrieves present time.

now(): Promise<number>

Parameters

• No parameter value
• Return value : Returns number.

---

prototype.quit()

Stops wipe timer

quit(): void

Parameters

• No parameter value
• Return value : No return value.

---

Session

---

prototype.sessionId

Returns session id value

sessionId(): string

---

prototype.userId

Returns user id value

userId(): string

---

prototype.ttl

Returns Time-To-Live value

ttl(): number

---

prototype.lastAccess

Returns the time (unix) of last access

lastAccess(): number

---

prototype.expires

Returns the time (unix) that session be expired.

expires(): number

---

prototype.expiresIn

Returns duration that session be expired.

expiresIn(): number

---

prototype.valid

Returns validation of session and user with last access control.

valid(): boolean

---

prototype.idle

Returns idle duration in seconds.

idle(): number

---

prototype.[additionalField]

Returns any additional field value

---

prototype.read()

Reads session info from redis server

read(): Promise<void>

---

prototype.get()

Retrieves user data from session.

get(key): Promise<any>

Parameters

• key: string | Array | Object<String,*>
• Return value : No return value.

---

prototype.set()

Stores user data to session

set(key, value): Promise<number>

Parameters

• key: string | Object
• value: *
• Return value : Length of values.

---

prototype.kill()

Kills the session

kill(): Promise<void>

---

prototype.write()

Write session to redis server.

write(): Promise<void>

---

Node Compatibility

• node >= 8.x

Change log

To see changelog click here

License

Available under MIT license.