Difference between asynchronous and synchronous programming in Node.js

In Node.js, asynchronous programming involves executing code without waiting for the result, allowing other operations to continue in parallel. Synchronous programming, on the other hand, requires the code to be executed in a sequential manner, waiting for each operation to complete before moving to the next.

Some key differences between asynchronous and synchronous programming in Node.js include:

• Asynchronous programming helps in improving the performance and efficiency of the application by allowing non-blocking operations.
• Synchronous programming can lead to blocking the execution of other operations, especially in I/O-bound tasks.
• Asynchronous programming in Node.js is achieved through callbacks, Promises, or async/await syntax.
• Synchronous programming in Node.js follows a 'blocking' behavior, where each operation must be completed before moving to the next one.

Overall, understanding the difference between asynchronous and synchronous programming is crucial for developing efficient and scalable applications in Node.js.