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radar blip

Single threaded servers with asynchronous I/O

Última actualización : Oct 22, 2012
Not on the current edition
This blip is not on the current edition of the Radar. If it was on one of the last few editions it is likely that it is still relevant. If the blip is older it might no longer be relevant and our assessment might be different today. Unfortunately, we simply don't have the bandwidth to continuously review blips from previous editions of the Radar Understand more
Oct 2012
Probar ? Vale la pena intentarlo. Es importante entender cómo construir esta habilidad. Las empresas deberían implementar esta tecnología en un proyecto que pueda manejar el riesgo.
Node.js is just one example of a class of single threaded servers with asynchronous I/O that are seeing increased popularity. A traditional web or application server associates each incoming request with a thread until all the processing tasks associated with that request are complete and the response has been sent back. If any of those tasks involve I/O, the thread blocks while that I/O takes place. This approach can waste finite resources such as file descriptors and memory since each connection occupies a thread whether or not that thread is actually consuming CPU cycles. An alternative architecture is starting to emerge in implementations like Node.js (a JavaScript server running on Google V8), Nginx (an open source web server and proxy), and Webbit (a Java application server), that uses a single thread to serve many connections, processing all I/O asynchronously. These servers support orders of magnitude more simultaneous connections because each one consumes far fewer resources.
Mar 2012
Evaluar ? Vale la pena explorarlo con el objetivo de entender cómo afectará a tu empresa.
Publicado : Mar 16, 2012
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