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Mongodb Topology Was Destroyed? 11 Most Correct Answers

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Normally, the ‘MongoDB error topology was destroyed’ error occurs if the node server’s connection to the MongoDB instance was interrupted while it was trying to write to it. Or if the mongo driver drops the connection for any reason.The unified topology is the first step in a paradigm shift away from a concept of “connecting” to a MongoDB deployment using a connect method.The underlying MongoDB driver has deprecated their current connection string parser. Because this is a major change, they added the useNewUrlParser flag to allow users to fall back to the old parser if they find a bug in the new parser. You should set useNewUrlParser: true unless that prevents you from connecting.

Mongodb Topology Was Destroyed
Mongodb Topology Was Destroyed

Table of Contents

What is unified topology MongoDB?

The unified topology is the first step in a paradigm shift away from a concept of “connecting” to a MongoDB deployment using a connect method.

What is useNewUrlParser true mongoose?

The underlying MongoDB driver has deprecated their current connection string parser. Because this is a major change, they added the useNewUrlParser flag to allow users to fall back to the old parser if they find a bug in the new parser. You should set useNewUrlParser: true unless that prevents you from connecting.


CSCI4208 – Lab 15: Mongo CRUD + REST API + JWT Auth

CSCI4208 – Lab 15: Mongo CRUD + REST API + JWT Auth
CSCI4208 – Lab 15: Mongo CRUD + REST API + JWT Auth

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Csci4208 - Lab 15:  Mongo Crud + Rest Api + Jwt Auth
Csci4208 – Lab 15: Mongo Crud + Rest Api + Jwt Auth

What is Mongoose connection?

Mongoose lets you start using your models immediately, without waiting for mongoose to establish a connection to MongoDB. mongoose. connect(‘mongodb://localhost:27017/myapp’); const MyModel = mongoose. model(‘Test’, new Schema({ name: String })); // Works MyModel. findOne(function(error, result) { /* …

How do you know if a mongoose is connected?

log(‘disconnected’); console. log(mongoose. connection. readyState); //logs 0 }); // Connect to a MongoDB server running on ‘localhost:27017’ and use the // ‘test’ database.

Check Mongoose Connection Status
  1. 0 = disconnected.
  2. 1 = connected.
  3. 2 = connecting.
  4. 3 = disconnecting.
  5. 4 = invalid credentials.

Is findByIdAndUpdate deprecated?

Model. findByIdAndUpdate() is issuing a deprecation warning for mongodb – which has deprecated collection. findAndModify. Mongodb suggests using findOneAndUpdate, findOneAndReplace or findOneAndDelete instead.

Is findOneAndUpdate deprecated?

DeprecationWarning: Mongoose: `findOneAndUpdate()` and `findOneAndDelete()` without the `useFindAndModify` option set to false are deprecated.

What can I use instead of useCreateIndex?

What version of Mongoose are you using? The useCreateIndex option has been deprecated for a while and removed as of the Mongoose 6 release per No More Deprecation Warning Options: useNewUrlParser , useUnifiedTopology , useFindAndModify , and useCreateIndex are no longer supported options.


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mongoError: Topology was destroyed – node.js – Stack Overflow

It seems to mean your node server’s connection to your MongoDB instance was interrupted while it was trying to write to it. Take a look at the Mongo source …

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MongoDB error topology was destroyed – Fix it now

Basically, the ‘MongoDB error topology was destroyed’ error occurs if the node server’s connection to the MongoDB instance was interrupted while it was …

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mongoError: Topology was destroyed – SyntaxFix

It seems to mean your node server’s connection to your MongoDB instance was interrupted while it was trying to write to it. Take a look at the Mongo source code …

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How to fix the ‘mongoError: Topology was destroyed’ error with …

To fix the ‘mongoError: Topology was destroyed’ error with Mongoose, we should make sure our connection to the MongoDB server isn’t interrupted.

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Which is better MongoDB or mongoose?

It provides a lot of convenience in the creation and management of data in MongoDB. On the downside, learning mongoose can take some time, and has some limitations in handling schemas that are quite complex. However, if your collection schema is unpredictable, or you want a Mongo-shell like experience inside Node.


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Hướng dẫn connect NodeJS Server CRUD users với MongoDB
Hướng dẫn connect NodeJS Server CRUD users với MongoDB

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Hướng Dẫn Connect Nodejs Server Crud Users Với Mongodb
Hướng Dẫn Connect Nodejs Server Crud Users Với Mongodb

Should I use mongoose or MongoDB?

Mongoose is not the only ODM library, there are hapijs/joi, MongoDB schemas, etc. And while Mongoose is good especially in areas of inferring data types, we should choose to use the MongoDB schema validation for schemas validation.

Is it necessary to close MongoDB connection?

There is no need for closing the connection explicitly. This way the application avoids creating and closing connections (which is an expensive operation).

Is mongoose connect a promise?

connect() return a promise that resolves to the mongoose singleton. As for mongoose. createConnection() , mongoose still supports using the return value of mongoose.

Why is it called a mongoose?

Etymology. The English word “mongoose” used to be spelled “mungoose” in the 18th and 19th centuries. The name is derived from names used in India for Herpestes species:muṅgūs or maṅgūs in classical Hindi;muṅgūs in Marathi;mungisa in Telugu;mungi, mungisi and munguli in Kannada.

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Do we need to close mongoose connection?

You should close a mongoose connection when a Node POSIX signal is happening. SIGINT process is triggered when Ctrl-C has been pressed on terminal or a server shutdown. Another possible scenario is to close a connection when a data streaming is done.

Is MongoDB update deprecated?

update is deprecated. Use updateOne, updateMany, or bulkWrite instead.


Buổi 22: ghép mongodb với server

Buổi 22: ghép mongodb với server
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Buổi 22: Ghép Mongodb Với Server
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What is the use of useCreateIndex?

useCreateIndex : Again previously MongoDB used an ensureIndex function call to ensure that Indexes exist and, if they didn’t, to create one. This too was deprecated in favour of createIndex .

What does findOneAndUpdate return?

By default, findOneAndUpdate() returns the document as it was before update was applied. You should set the new option to true to return the document after update was applied.

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