Consider building a microservice handling requests from various clients and other microservices. How would you implement socket programming for non-blocking, asynchronous I/O and high throughput?

  • Use Java's AsynchronousSocketChannel with NIO for asynchronous I/O and high throughput.
  • Implement a multi-threaded server using Java's ServerSocket with one thread per connection.
  • Employ Java's Socket with multi-threading for parallel request processing.
  • Use Java's DatagramSocket with UDP for low overhead and high throughput.
To achieve non-blocking, asynchronous I/O, and high throughput in a microservice, Java's AsynchronousSocketChannel with NIO (Option 1) is the ideal choice. It allows for efficient handling of multiple connections without the need for a thread per connection, leading to scalability. Options 2 and 3, which use multi-threading, may lead to higher resource consumption and less scalability. Option 4, utilizing UDP with DatagramSocket, may not guarantee reliable, ordered, and synchronous communication, which is essential for a microservice handling requests.
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