Reactor Pattern

What is a Demultiplexer in Node.js?

In Node.js, a demultiplexer is a mechanism that takes a single stream of data and distributes it to one or more output streams. This process is essential for applications that need to process or route data dynamically, such as in server-side applications, real-time data processing, and network communication....

How Demultiplexers Work in Node.js

Demultiplexers in Node.js work by listening to an input stream, interpreting the data, and then routing the data to the appropriate output stream. This is often achieved using event listeners and conditional logic to determine the correct destination for each piece of data....

Event Looping

The series of steps in which the event looping in Node.js takes place is as follows:...

Applications of Demultiplexers

Network Communication: Demultiplexers can be used to route incoming network packets to different handlers based on the type of packet or its content. Real-Time Data Processing: In real-time systems, such as IoT or financial trading platforms, demultiplexers can distribute data to various processing units for parallel processing. Server-Side Applications: Demultiplexers can help in server-side applications to manage incoming requests and route them to different services or microservices based on the request type or URL....

Reactor Pattern

The Reactor Pattern in the Node.js web framework plays an important role in the functionality of the demultiplexer in the program. The Reactor Pattern pattern allows the user to prevent the stoppage of the operations which are processed by the I/O Unit operations. The I/O unit operations are directly provided to the demultiplexer in Node.js to avoid the blockage of the I/O requests....

Types of I/O Unit Operations

Blocking I/O: It makes a synchronous function call to stop the execution from the I/O unit until it sends the data for the next time. Non-Blocking I/O: It makes an asynchronous function call to continue with the execution of the program and it does not call the processor to block the input from the I/O unit....

Importance of Demultiplexer

I/O Unit Slowness: Demultiplexers help mitigate the slow performance of I/O units by quickly transferring data to the processor in Node.js. Reducing Latency: By efficiently transferring data to the processor, demultiplexers prevent increased latency in program execution, ensuring timely completion of tasks. Blocking I/O Handling: They assist in handling blocking I/O situations by preventing data transmission until the previous instruction is completed, thus enhancing execution efficiency. Event Loop Management: Demultiplexers aid in managing the event loop by queuing approved instructions, ensuring orderly transfer to the processor for execution. Non-Blocking I/O Efficiency: They facilitate non-blocking I/O operations by allowing multiple requests without blocking threads, improving overall system efficiency. Polling Bus Arbitration: Demultiplexers utilize polling bus arbitration to prioritize multithreaded requests, ensuring efficient execution without wasting CPU cycles on thread prioritization....