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WorksheetsNodejs: Queues and Background Workers
Total questions: 10
Worksheet time: 5mins
What is a queue in the context of Node.js?
A data structure for storing files
A way to organize routes in Express.js
A mechanism for handling asynchronous tasks
A built-in module for event handling
Which npm package is commonly used for implementing queues in Node.js?
Bull
Dock
Fox
Eagle
What is the purpose of a background worker in a Node.js application?
To handle UI interactions
To execute tasks in the main thread
To perform tasks in the background without blocking the main thread
To manage database connections
In the context of queues, what does "FIFO" stand for?
First-In, First-Out
First-In, First-On
Fast-In, Fast-Out
First-Item, First-Off
How does a background worker differ from a regular JavaScript function?
Workers run in a separate thread or process
Workers can only handle synchronous tasks
Workers are not suitable for long-running tasks
Workers execute tasks immediately upon invocation
What is the primary advantage of using a queue for background processing in a Node.js application?
Improved code readability
Better handling of synchronous tasks
Scalability and asynchronous task execution
Reduced memory usage
How does a task queue help in achieving fault tolerance in a Node.js application?
By preventing tasks from failing
By being able to continue operating despite failures or malfunctions.
By ignoring failed tasks
By terminating the worker process on task failure
In the context of task queues, what is a "worker process"?
A separate JavaScript file containing tasks
A Node.js process responsible for executing tasks from the queue
A function within the main application responsible for background tasks
A callback function passed to the queue.process() method
What is the purpose of setting a timeout for a task in a queue?
To limit the overall execution time of the queue
To prioritize the task
To control the order of task execution
To increase the concurrency setting
What is the purpose of setting a delay for a task in a queue?
To prioritize the task
To postpone the execution of the task
To increase the concurrency setting
To set a timeout for the task
