Summary:In order to evaluate the generalization ability of the model, that is, to judge whether the model is good or bad, we need to use a certain index to measure it. With the evaluation index, we can compare the pros and cons of different models, and use this index to further optimize the model. This […]
Summary:Cookie, Session, and Token are products of different development stages This article is shared from the HUAWEI CLOUD community “The Story Behind Cookies, Sessions, and Tokens” by Long Ge Notes. 1. Upgrade the interactive experience of the website As netizens, we use browsers to browse various websites every day to meet our daily work and
Summary:Thread Dump is a very useful tool for diagnosing Java application problems. This article is shared from Huawei Cloud Community “Debugging and Troubleshooting – Thread Dump Analysis of Java Thread Analysis”, author: Long Ge Notes. Thread Dump is a very useful tool for diagnosing Java application problems. Each Java virtual machine has the ability to
Summary:RocketMQ’s excellent performance cannot be avoided without its excellent storage model. This article is shared from Huawei Cloud Community “Finally Figured Out the Storage Model of RocketMQ”, author: Brother Yong java actual combat sharing. RocketMQ’s excellent performance cannot be avoided without its excellent storage model. 1 Overall overview First review the RocketMQ architecture. There are
Summary:What kind of system is considered a high concurrent system? Today, let’s decipher the architecture of a typical seckill system in a high-concurrency business scenario. This article is shared from the HUAWEI CLOUD community “[High Concurrency]Decryption of Seckill System Architecture, Not All Seckills Are Seckills (Upgraded Version)! ! “, Author: Glacier. What kind of system
Summary:This case will take you to use an open source SMART dataset and the random forest algorithm in machine learning to train a hard disk failure prediction model and test the effect. This article is shared from Huawei Cloud Community “Hard Disk Failure Prediction Based on Random Forest Algorithm”, author: HWCloudAI. Experimental objectives Master the
Summary:Working with dynamic SQL is not an easy task, but MyBatis significantly improves the ease of use of this feature with the powerful dynamic SQL language that can be used in any SQL mapped statement. This article is shared from Huawei Cloud Community “MyBatis Detailed Explanation – Dynamic SQL Usage and Principles”, author: Long Ge
Summary:Recently, when optimizing the locking method of the program, there was a deadlock! ! Why? ! After careful analysis, the reason was finally found. This article is shared from the HUAWEI CLOUD community “[High Concurrency]Deadlocked when optimizing the locking method! ! “, Author: Glacier. written in front Recently, when optimizing the locking method of the
Summary:How does Java implement and manage the thread pool? This article is shared from Huawei Cloud Community “JUC Thread Pool: Detailed Explanation of ThreadPoolExecutor”, author: Notes of Brother Long. Take the interview questions from big factories to understand hint Please continue with these questions, which will help you better understand the relevant knowledge points to
Summary:When multiple threads access shared data, there will be thread safety issues. This article is shared from the HUAWEI CLOUD community “Principles and Solutions of Multithreaded Security Issues and the Use and Difference of Synchronized and ReentrantLock”, author: Have a drink together. Overview of Thread Safety Issues Analysis of ticket sales There is no problem
Summary:This article focuses on several ways to improve program performance by optimizing Cache usage. This article is shared from HUAWEI CLOUD community “Things about Compiler Optimization (7): Cache Optimization”, author: Assistant Bi Sheng. introduction Software developers often expect computer hardware to have unlimited capacity, zero access delay, unlimited bandwidth, and cheap memory, but the reality
Summary:Java also uses constructors, and also provides a garbage collector (garbage collector), which will automatically release memory resources when they are no longer in use. This article is shared from Huawei Cloud Community “One Article Takes You to Understand Constructors in Java”, author: One of the Universe. C++ introduces the concept of a constructor (also
