MongoError: E11000 duplicate key error collection

[dev-aman-gupta]

Hi,
I am using this module for storing sessions in the database and now i am getting this error,

MongoError: E11000 duplicate key error collection: myDatabase.sessions index: _id_ dup key: { : "Lz4SJIHaBfGFfNg3_ChNTkFnwKBLQDUN" }
    at Function.MongoError.create (/home/user/public_html/projectName/server/node_modules/mongodb-core/lib/error.js:31:11)
    at toError (/home/user/public_html/projectName/server/node_modules/mongodb/lib/utils.js:139:22)
    at /home/user/public_html/projectName/server/node_modules/mongodb/lib/collection.js:1060:67
    at /home/user/public_html/projectName/server/node_modules/mongodb-core/lib/connection/pool.js:461:18
    at _combinedTickCallback (internal/process/next_tick.js:73:7)
    at process._tickDomainCallback (internal/process/next_tick.js:128:9)

I am using this module as,

app.use(session({
  secret:appConfig.JWT_SECRET,
  resave:false,
  saveUninitialized:true,
  store: sessionstore.createSessionStore({
      type: 'mongodb',
      host: 'localhost',         // optional
      port: 27017,               // optional
      dbName: 'databaseName',       // optional
      collectionName: 'sessions',// optional
      timeout: 10000             // optional
  }),

  cookie: {
         maxAge: 1000 * 60 * 60 // Milliseconds (3600000ms -> 60min)
     }
}));

How to prevent creating documents with the same id. Also i am not using Mongoose in my project. What can be done as this does not crash the server but close down all the connections with the database and the users are not able to login (or there is no api response).

[adrai]

You can try with v1.3.5 and the additional option: ignoreConcurrency: true