Connection pooling concept in MongoDB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a MongoDB client with connection pooling enabled.

MongoDB

const client = new MongoClient(uri, { [1]: 10 });

Drag options to blanks, or click blank then click option'

AmaxPoolSize

BpoolSize

Cconnections

DconnectionLimit

Attempts:

3 left

💡 Hint

Common Mistakes

Using poolSize which is deprecated in newer drivers.

Using connectionLimit which is not a valid option here.

The maxPoolSize option sets the maximum number of connections in the pool for MongoDB clients.

2fill in blank

medium

Complete the code to connect the MongoDB client and log a success message.

MongoDB

await client.[1]();
console.log('Connected to MongoDB with pooling');

Drag options to blanks, or click blank then click option'

Astart

Binitialize

Copen

Dconnect

Attempts:

3 left

💡 Hint

Common Mistakes

Using start() which does not exist.

Using open() which is not a MongoDB client method.

The connect() method establishes the connection pool and connects the client to the MongoDB server.

3fill in blank

hard

Fix the error in the code to properly close the MongoDB client connection pool.

MongoDB

await client.[1]();

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Adisconnect

Bclose

Cshutdown

Dend

Attempts:

3 left

💡 Hint

Common Mistakes

Using disconnect() which is not a MongoDB client method.

Using end() which is not valid here.

The close() method properly closes all connections in the pool and releases resources.

4fill in blank

hard

Fill both blanks to create a MongoDB client with a max pool size of 20 and a timeout of 3000 ms.

MongoDB

const client = new MongoClient(uri, { [1]: 20, [2]: 3000 });

Drag options to blanks, or click blank then click option'

AmaxPoolSize

BconnectTimeoutMS

CsocketTimeoutMS

DpoolTimeout

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing socketTimeoutMS with connection timeout.

Using poolTimeout which is not a valid option.

maxPoolSize sets the max connections in the pool, and connectTimeoutMS sets the connection timeout in milliseconds.

5fill in blank

hard

Fill all three blanks to create a MongoDB client with a max pool size of 50, a connect timeout of 5000 ms, and a socket timeout of 45000 ms.

MongoDB

const client = new MongoClient(uri, { [1]: 50, [2]: 5000, [3]: 45000 });

Drag options to blanks, or click blank then click option'

AmaxPoolSize

BconnectTimeoutMS

CsocketTimeoutMS

DpoolSize

Attempts:

3 left

💡 Hint

Common Mistakes

Using poolSize instead of maxPoolSize.

Mixing up connectTimeoutMS and socketTimeoutMS.

Use maxPoolSize for max connections, connectTimeoutMS for connection timeout, and socketTimeoutMS for socket inactivity timeout.