What are the differences between synchronous and asynchronous communication in distributed systems?

  • Asynchronous communication is always faster than synchronous communication.
  • In synchronous communication, the sender and receiver must be active at the same time, while in asynchronous communication, they operate independently of each other.
  • Synchronous communication involves a single sender and multiple receivers, whereas asynchronous communication involves multiple senders and a single receiver.
  • Synchronous communication requires a higher bandwidth compared to asynchronous communication.
Synchronous communication requires the sender and receiver to be active simultaneously, with the sender waiting for a response before proceeding, whereas asynchronous communication allows the sender to continue operation without waiting for an immediate response. Asynchronous communication offers benefits such as decoupling of components, better scalability, and fault tolerance, albeit with potential complexities in handling out-of-order messages and ensuring eventual consistency.
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