Asynchronous execution

Asynchronous execution plays an essential role in developing high-performance and optimized applications. AWS Lambda supports asynchronous execution. There are different approaches to executing AWS Lambda functions in asynchronous mode. 

Understanding asynchronous execution

Asynchronous execution is the process of executing specific blocks of code without blocking user intervention. To understand it better, consider the jQuery Ajax mechanism for sending asynchronous requests to the server, which does so without blocking the user and capturing the success response or error response in a callback method. Have a look at the following diagram to get a better understanding:

Now, as you can see, once the server gets an asynchronous request from the client, the server returns an acknowledged response immediately. Once the request processing is done, either a success or failure response will be returned; otherwise, nothing will be returned. 

Whether a response is returned from...