Java NIO_第4页-阿里云

以 Java NIO 的角度理解 Netty

前言上篇文章《Netty 入门指南》主要涵盖了 Netty 的入门知识，包括 Netty 的发展历程、核心功能与组件，并且通过实例演示了如何使用 Netty 构建一个 HTTP 服务器。由于 Netty 的抽象程度较高，因此理解起来可能会更加复杂和具有挑战性，所以本文将通过 Java NIO 的处...

BIO、NIO、IO多路复用模型详细介绍&Java NIO 网络编程

前言上文介绍了网络编程的基础知识，并基于 Java 编写了 BIO 的网络编程。我们知道 BIO 模型是存在巨大问题的，比如 C10K 问题，其本质就是因其阻塞原因，导致如果想要承受更多的请求就必须有足够多的线程，但是足够多的线程会带来内存占用问题、CPU上下文切换带来的性能问题，从而造成服务端崩...

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Java Spring Boot 2.6.0开发实战-1024程序员节创造营公益课

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Java Web开发-Web应用、Tomcat、HTTP请求与响应

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JAVA IO模式 —— BIO、NIO、AIO

! ! ! 学IO前，建议先了解下socket，简单讲，socket就是TCP协议的执行者，socket按照TCP协议在服务端和客户端之间建立起稳定连接通道后，服务端和客户端可分别从socket连接通道中获取输入流或输出（就是IO），下面在IO实例讲解中有用到一、总体认知（...

Netty入门到超神系列-Java NIO 三大核心(selector,channel,buffer)

前言上一章节我们认识了一下Java的三大IO，这一章节我们详细了解一下NIO的工作原理以及三大核心Selector,Channel,Buffer并尝试来做一些小案例。Java NIO 模型Java NIO有三个核心的组件： selector 选择器， channel 通道， buffer 缓冲区...

Netty入门到超神系列-Java NIO 三大核心(selector,channel,buffer)

前言上一章节我们理解了Java NIO三大核心，以及重点讲解了Buffer的原理和几个使用场景，其中也用到了channel。这一章我们来理解一下selector,结合channel来做一个c/s通信。理解Selector 和 ChannelSelector 选择器，也叫多路复用器，可以同时处理多个客...

Netty入门到超神系列-Java NIO零拷贝实战

前言这一章我们来操作一下NIO的零拷贝，这里我会先写代码样式一下传统IO数据拷贝场景下的耗时，然后再对比NIO场景下的考别耗时，通过耗时差异就能看到NIO零拷贝和传统IO拷贝的区别了。传统IO拷贝服务端服务端主要是接收一下客户端传输过来的数据//普通拷贝 - 服务端 public class Soc...

【Java面试】说说NIO和IO的区别，再说说Linux支持那些IO模型？

IOIO一般说的就是IO流了，IO流一般是从磁盘或者其他主机上去读取或者写入数据，当然，除了磁盘，还有网络，内存都是可以作为IO流的数据的来源或者目的地。再Java中也提供了字节流或者字符流去实现这种对数据流的操作。那么如果是面向网络的话，Java中也提供了这种对TCP/IP协议的封装的这种接口，叫...

Java NIO系列教程四【完】-管道-文件锁-异步写入

一、Pipe管道管道是 2 个线程之间的单向数据连接一个 source 通道（读取）和一个sink 通道（写入） 1.1 核心的方法打开管道 Pipe pipe = Pipe.open(); 写入管道-需要访问 sink 通道 Pipe.SinkChannel sinkChannel = pip...

Java NIO系列教程三

NIO Buffer缓冲和Selector 一、Buffer 通道进行交互。数据是从通道读入缓冲区，从缓冲区写入到通道中在 NIO 库中，所有数据都是用缓冲区处理的 1.1 基本用法使用 Buffer 读写数据，四个步骤（1）写入数据到 Buffer （2）调用 f...

Java NIO系列教程二

NIO详解一、其他Channel 1. Socket通道所有的 socket 通道类(DatagramChannel、SocketChannel 和 ServerSocketChannel)都继承了位于 java.nio.channels.spi 包中的 AbstractSelectable...

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