Is there any problem if I use two nodejs server connect to one MongoDB server at the same time?. Can this way create any read/write issue on mongo instance?.
The same question for another case: One nodejs server connect to two MongoDB server at the same time?
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I am doing a database project using reactjs for frontend and Oracle database for the database connection.
Many sources for the connection of React and MySQL are available but there is hardly any source for connection with the oracle database in React.How do i do it? documentation for nodejs oracle connection is available.so i can connect with the database but how do i show results on localhost using Reactjs?
I have tried to create a simple javascript file and connect with oracle in it.I was able to get data on the console but how do i post it on localhost?
You need apis for acting as a bridge between reactjs application and oracle db. You can use any backend stack for oracle db connection and apis like nodejs, python etc. Reactjs is not to be used for server side applications, its only for the frontend meant to be running inside a browser.
I've connected to mLab using MongoClient.connect, but now I want to create a local database rather than use mLab. I've tried changing the URL to "mongodb://localhost:27017/mydb" to create a database locally as suggested, but I'm getting a failed to connect to server error. Is there anything I should install? Or am I just missing something?
First, install your mongoDB server:
https://docs.mongodb.com/manual/installation/
After that, you should be able to start your local mongodb server:
sudo service mongod start //in case of linux
Here the docs to start the mongodb server
Then, you will type mongo and the client command line will start.
And when typing use yourDatabase, mongo will create the database if
it does not exist.
Then, your server will be up, and the database created. Anyway, check the docs if you need the guides for windows or other systems.
First you need to understand how server works and mlab works. mLab is a company who provide database as a services. Means you no need to handle server hurdles, they take care server , backups , infrastructure etc. They provide mongodb server , You just need to create database on mongodb server's and use them.
Now comes to main points.
If you want use mongodb on your local system then you first need to install mongodb on your local system and then connect it.
I've got a mongodb collection that gets started with Meteor that I would like to connect to and edit from a nodejs file outside of meteor. From my understanding when I start meteor, I can open another terminal and type meteor mongo and it allows me to connect to the running mongodb instance that meteor is running. But how can I connect to this from a nodejs file? And add items to a collection in a database? What sort of security/authentication do I have to go through if any? (I don't remember having to set up a username/password for the mongodb, it just starts when meteor starts)
When running meteor locally, the mongodb is running on port 3001. There's no security or authentication, you simply have to connect to 127.0.0.1 port 3001, and then access the meteor database.
For historical reasons and technical necessity our app has the following configuration:
The node.js workers need to connect (using Socket.IO-Client) to the node.js database access point AND listen for a connection from the node.js servers (using Socket.IO). I am having issues getting both to connect and I am wondering, do I need to use different ports for each Socket.IO-client or can they operate on the same port?
Right now, things seem to connect for a moment, but no data is passed along.
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I am new to mongodb and want to know about connecting to remote server. I have mongodb running on remote server. I want to access the mongo database from another server and perform all the operation. How can i do that. I am using node.js with mongodb. Please help me how can i establish the connection.
You can use the following library for node:
https://github.com/christkv/node-mongodb-native
If you want a tool to access the database, you can use:
MongoHub (for Mac) & MongoVUE (for Windows)
Good luck!