![]() Small number of threads means less memory utilization and also less context switching as well. Non-blocking nature of threads helps in scaling the performance of the application. When the handler function is complete, one of thread from pool collect the response and pass it to the call back function. Request thread delegates the incoming requests to a thread pool (generally small number of threads) which delegate the request to it’s handler function and immediately start processing other incoming requests from request thread. There is generally only one request thread receiving the request.Īll incoming requests come with a event handler and call back information. In non-blocking or asynchronous request processing, no thread is in waiting state. It may hamper the performance and limit the full utilization of server capability. Blocking request processingĪs server can have some finite number of request threads, it limits the server capability to process that number of requests at maximum server load. It is also called synchronous request processing. During the time worker threads are busy, servlet thread (request thread) remain in waiting status and thus it is blocked. It delegates the request to worker threads for I/O operations such as database access etc. In traditional MVC applications, when a request come to server, a servlet thread is created. Blocking vs non-blocking (async) request processing 1.1.1. Reactive programming involves modeling data and events as observable data streams and implementing data processing routines to react to the changes in those streams.īefore digging deeper into reactive world, first understand the difference between blocking vs non-blocking request processing. Reactive programming is a programming paradigm that promotes an asynchronous, non-blocking, event-driven approach to data processing. In this spring webflux tutorial, we will learn the basic concepts behind reactive programming, webflux apis and a fully functional hello world example. It is fully non-blocking, supports reactive streams back pressure, and runs on such servers as Netty, Undertow, and Servlet 3.1+ containers. The reactive-stack web framework, Spring WebFlux, has been added Spring 5.0.
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