I have several tasks that need to be executed all the time. In the task, a method is called to get the value, blocking the attempt to get the value for 10 minutes, and then exit the thread if the value is not available 10 minutes later. These tasks are m...
problem description recently, I have been optimizing the related business of the system learn that you can improve the performance of db through thread pooling here comes the problem mysql has its own thread pool. You can add parameters such as ...
problem description where should the Java thread pool be created? Or whether a thread pool is used for one business, multiple businesses, or the whole project ...
but I wonder if I can use a thread pool. Like fixedthreadpool. To limit the number of threads to control the number of visits if the number of visits exceeds the limit of the number of threads, refuse directly. Can you control the number of visits ?...
The question is written on the title, is there any way to be spaced by BAN, when it is applied too fast in crawlers? Or is it that there is no interval in this kind of concurrency? ...
now there is an older project, and the dependent version of the dependency package in package-lock.json is fixed: but once npm I , all the dependent versions circled in the red box above are changed to ^ x.x.x or ~ x.x.x . How can these depen...
problem description: it has recently been found that abnormal memory growth occurs when pages are constantly switching. for example, I have two routes, NewWallet and NewTransaction . As shown in the following figure, I first do Snapshot2 , then sw...
problem description in WeChat Mini Programs, I want to click the button to play or pause music. I use wx.createInnerAudioContext () to get the InnerAudioContext instance, then save InnerAudioContext to data, and control the music through the src prope...
In Java development, a global variable is declared in the class and is not initialized, then the variable is initialized in try {}, and the member variable is called outside the try {} block. The error variable is not initialized, but the variable has in...
A: getFruitData(){ this.$http.get(".. .. .. .. static fruit.json").then((res)=>{ console.log(res); var fruitData = res.data.data.fruitData; this.sliderFruitData = fruitData.filte...