Recall & Review
beginner
What is connection pooling in MongoDB?
Connection pooling is a technique where multiple database connections are kept open and reused to handle requests efficiently, reducing the overhead of opening and closing connections repeatedly.
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beginner
Why is connection pooling important in database applications?
It improves performance by reusing existing connections, reduces latency, and lowers resource consumption on the database server.
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intermediate
How does MongoDB manage connection pools internally?
MongoDB drivers create a pool of connections that are shared among requests. When a request needs a connection, it takes one from the pool and returns it after use, allowing efficient reuse.
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intermediate
What could happen if connection pooling is not used in a high-traffic MongoDB application?
Without connection pooling, the application would open and close connections frequently, causing high latency, increased resource use, and possible connection limits being reached.
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beginner
Name one configuration option related to connection pooling in MongoDB drivers.
One common option is 'maxPoolSize', which sets the maximum number of connections in the pool.
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What does connection pooling help reduce in MongoDB applications?
✗ Incorrect
Connection pooling reduces the overhead by reusing open connections instead of opening new ones each time.
Which MongoDB driver setting controls the maximum connections in the pool?
✗ Incorrect
maxPoolSize sets the maximum number of connections allowed in the connection pool.
What happens when all connections in the pool are busy and a new request comes in?
✗ Incorrect
The request waits for a free connection from the pool to maintain efficient resource use.
Connection pooling primarily improves which aspect of database interaction?
✗ Incorrect
Connection pooling improves performance by managing connections efficiently.
True or False: Connection pooling opens a new connection for every database request.
✗ Incorrect
False. Connection pooling reuses existing connections instead of opening new ones for every request.
Explain connection pooling in MongoDB and why it is useful.
Think about how opening and closing connections repeatedly affects speed and resources.
You got /4 concepts.
Describe what could happen if an application does not use connection pooling with MongoDB under heavy load.
Consider the cost of creating new connections each time.
You got /4 concepts.