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Threads

Synchronous​

Single Threaded​

  • each task gets executed 1 after another
  • each task waits for its previous task to be completed before getting executed

Multi-Threaded​

  • tasks get executed in different threads
    • but waits for other executing tasks on other threads to be completed before getting executed

Asynchronous​

Single Threaded​

  • tasks start executing without waiting for a different task to finish
  • at a given time, a single task gets executed

Multi-Threaded​

  • tasks get executed in different threads without waiting for any tasks and independently finish off their executions

Concurrency​

  • execution of tasks in a single core environment
  • tasks are context switched between one another

Parallelism​

  • 2 tasks are being performed simultaneously over the same time period