1. git clone senetinel 源码到本地,切换到release1.8分支 2. 找到FlowQpsDemo.java, 根据sentinel自带的案例来学习sentinel的原理 3. 先看main方法 public static void main(String[] args) throws Exception { initFlowQpsRule(); //tick(); // first make the system run on a very low condition…

小结: 1.在连接环节计数,有清零环节 有3个参量 maxburst unit_delay https://github.com/openresty/lua-resty-limit-traffic/blob/master/README.md -- limit the requests under 200 req/sec with a burst of 100 req/sec, -- that is, we delay requests under 300 req/sec and above 20…

本期内容 : 数据接收架构设计模式 数据接收源码彻底研究 一.Spark Streaming数据接收设计模式   Spark Streaming接收数据也相似MVC架构: 1. Mode相当于Receiver存储数据,C级别的,Receiver是个抽象因为他有好多的Receiver 2. ReceiverSupervisor 是控制器,因为Receiver启动是靠ReceiverSuperior启动的,及接收到的数据交给ReceiverSuperior存储数据的 3. Driver会获得源数据,…

上一节跑到了NormalModuleFactory模块,调用了原型方法create后,依次触发了before-rsolve.factory.resolver事件流,这节从resolver事件流开始讲. 源码简化如下: this.plugin("resolver", () => (data, callback) => { // 来自于create方法 const contextInfo = data.contextInfo; const context = data.cont…

compilation事件流中,依然只是针对细节步骤做事件流注入,代码流程如图: // apply => this-compilation // apply => compilation // return compialtion const compilation = this.newCompilation(params); this.applyPluginsParallel("make", compilation, err => { // callback...…

下一个compilation来源于以下代码: compiler.apply(new EntryOptionPlugin()); compiler.applyPluginsBailResult("entry-option", options.context, options.entry); 之前简单分析该处的apply,此处只看非数组单入口的情况,此时会引入SingleEntryDependency模块,与compilation相关的内容如下: compiler.plugin("…

正式开始跑编译,依次解析,首先是: compiler.apply( new JsonpTemplatePlugin(options.output), // start new FunctionModulePlugin(options.output), new NodeSourcePlugin(options.node), new LoaderTargetPlugin(options.target) ); 流程图如下: 这里是第一个compilation事件注入的地方,注入代码如下: compil…

呃,终于到了这地方-- newCompilation(params) { // ... this.applyPlugins("this-compilation", compilation, params); console.log(this._plugins['compilation'].length); this.applyPlugins("compilation", compilation, params); return compilation; } MMP,…

上一节生成Compilation实例后,添加了一些属性,随后触发this-compilation事件流,如下: Compiler.prototype.newCompilation = (params) => { // new Compilation() const compilation = this.createCompilation(); compilation.fileTimestamps = this.fileTimestamps; compilation.contextTimestam…

新年好呀~过个年光打游戏,function都写不顺溜了. 上一节的代码到这里了: // NormalModuleFactory的resolver事件流 this.plugin("resolver", () => (data, callback) => { // ... asyncLib.parallel( /*...*/ , /* results: [ [], { resourceResolveData: { context: { issuer: '', compiler:…