C++11 -- multithreaded programming 6

In this article, we will discuss the necessity of event processing in multithreading Sometimes a thread needs to wait for something to happen, such as the condition is true or the task is completed through another thread such as Suppose we are building a web-based application. This application performs the following tasks:, Handshake with serv ...

Posted by padma on Mon, 08 Nov 2021 23:25:20 -0800

Distributed project_ Identityserver4_ClientCredentials

Identityserver4 Client Credentials Client credential mode 1. Preparation dotnet CLI quick install template Identityserver template dotnet new -i IdentityServer4.Templates 2. Create ASP. Net core application Create an IdentityServery project md quickstart cd quickstart md src cd src dotnet new is4empty -n IdentityServer This will create ...

Posted by Hodo on Mon, 08 Nov 2021 23:21:04 -0800

Golang NSQ message queue usage practice

I read a lot on the Internet and copied the official website README. I didn't explain many important things clearly. I had to study it myself.My blog, keyword Less-Bug.com, welcome to pay attention.Introduction to NSQnsqd: daemon, client communication. Default port 4150 (TCP) 4151 (HTTP)Nsqlookupd: equivalent to a router. The client can discove ...

Posted by mabans on Mon, 08 Nov 2021 23:18:21 -0800

Leetcode question set 13 (remove elements)

Removing elements from an array in O(N) time usually uses a two fingered needle method. 27. Remove element  Give you an array nums   And a value Val, you need to remove all values in place equal to   val   And returns the new length of the array after removal. Instead of using extra array space, you must use only O(1) ex ...

Posted by Izzy1979 on Mon, 08 Nov 2021 23:07:23 -0800

Chapter V Decision Tree

Decision tree is a basic classification and regression method. This chapter mainly discusses the decision tree for classification. The decision tree model has a tree structure. In the classification problem, it represents the process of classifying instances based on features. It can be considered as a set of if then rules, or as a conditional ...

Posted by achilles on Mon, 08 Nov 2021 23:05:06 -0800

Debugging method after opening MMU when Linux kernel starts

Recently, I was debugging the Linux kernel and tracking the startup process. It is found that before turning on mmu, the physical address can be used to output debugging information by losing data to the serial port Fifo. However, once the code runs to enable mmu, in the assembly stage, mmu only maps the physical memory and does not map io, so ...

Posted by canabatz on Mon, 08 Nov 2021 22:58:01 -0800

Time processing (Backend)

Reference connection @Use of JsonFormat and @ DateTimeFormat annotations: https://www.cnblogs.com/mracale/p/9828346.html com.fasterxml.jackson tool class: https://www.cnblogs.com/loong-hon/p/10315000.html Detailed summary and usage of Jackson API: https://blog.csdn.net/wangmx1993328/article/details/88598625 com.fasterxml.jackson introduction ...

Posted by Vik on Mon, 08 Nov 2021 22:48:33 -0800

Easy to use vim configuration and explanation,. vimrc makes office more efficient

Many Xiaobai should start using vim just like me. They don't know how to configure it. They have been plagued by problems such as not highlighting SV syntax and boring background color. The following is the summary and explanation of the boss. An efficient vim configuration is of great help to the office! . vimrc configuration Powerful vim ...

Posted by Zippyaus on Mon, 08 Nov 2021 22:35:16 -0800

Learn the Tidy extension library in PHP together

It is estimated that many students may not have heard of this extension. This is not a teddy bear, but an extension for dealing with HTML related operations. It can be mainly used for formatting and displaying data format contents such as HTML, XHTML and XML. About Tidy Library The tidy library extension is released with PHP, that is, we can ad ...

Posted by zushiba on Mon, 08 Nov 2021 22:35:20 -0800

[shared memory] performance comparison of mmap, shm and MappedByteBuffer

Introduction Due to the need to write a java program and an existing c program (AFL) for local communication in the near future, the efficiency of sending data using udp is not very high. In addition, AFL itself uses shm to share the physical memory to obtain the execution path information of the subroutine to be tested, while the shared memor ...

Posted by rugzo on Mon, 08 Nov 2021 22:26:33 -0800