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Learning TypeScript 2.x - Second Edition
book

Learning TypeScript 2.x - Second Edition

by Remo H. Jansen
April 2018
Beginner content levelBeginner
536 pages
13h 21m
English
Packt Publishing
Content preview from Learning TypeScript 2.x - Second Edition

Understanding non-blocking I/O

An input or output operation (I/O) is an operation that requires writing or reading from a physical source. This includes things such as saving a file into your hard disk or sending a file through the network.

In the past, operating systems only allowed us to perform I/O operations in what is known as a blocking model. In a blocking model, we can run an application in a thread, but when an I/O request takes place, the thread is blocked until the request is completed.

Web servers implemented using blocking I/O are not be able to handle multiple simultaneous connections using the same thread. For example, when an HTTP request arrives at the web server, it might need to perform some I/O operation (for example, ...

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Publisher Resources

ISBN: 9781788391474Supplemental Content