Question

Blocking operations that limit scalability of web operations include except
A. Waiting for a resource to be free before creating a response
B. Application might need to query a database before generating a response
C. Application might need to request data from a remote web service.
D. Providing asynchronous access to the thread as soon as it is free ​

Answer 1

Answer:

Application might need to query a database before generating a response

Answer 2

The option D. "Providing asynchronous access to the thread as soon as it is free"

is not an example of a blocking operation that limits scalability of web operations. Rather, it is a way to improve scalability by allowing the thread to continue processing other requests while it waits for the response from the previous request.

• The other options, A, B, and C, are examples of blocking operations that can limit scalability of web operations. Waiting for a resource to be free before creating a response, querying a database before generating a response, and requesting data from a remote web service all involve blocking the thread until a response is received, which can limit the number of requests that can be processed at any given time.

• To improve scalability, it is important to minimize the use of blocking operations by using techniques such as asynchronous programming, caching, and load balancing. These techniques can help reduce the amount of time that threads spend waiting for responses, allowing the server to handle more requests and improve overall performance.

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