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OpenJDK 11 is the first long-term support version after OpenJDK 8. This version has changed a lot in JVM log configuration, mainly standardization and unification. In OpenJDK 8, there are many status bits in the log configuration, which is confusing and difficult to maintain and further iterate. In OpenJDK 11, the JVM log related configuration ...

This article starts with WeChat official account of vivo Internet technology.Links: https://mp.weixin.qq.com/s/l4vuYpNRjKxQRkRTDhyg2QAuthor: Chen wangrong Distributed task scheduling framework is almost a necessary tool for every large-scale application. This paper introduces the demand background and pain points of the use of task schedu ...

previously on My system environment is: CentOS Linux release 7.7.1908 (Core) Before installing Harbor, you need to install Docker and Docker compose (the installation of these two items will not be described in detail) Harbor introduction Harbor is an open-source project, which is used to store and distribute Docker images. It extends Docker D ...

Source code analysis Because spring security social is implemented based on social authentication filter, let's start with social authentication filter When it comes to Filter, there must be a corresponding configuration class SocialAuthenticationFilter is no exception. Its corresponding configuration class is SpringSocialConfigurer. To make ...

[TOC] Implementation of middleware with nginx openresty Be careful In the formal ngx.exec(), you must not output anything, such as ngx.say("debug"), otherwise you will be trapped in redirection The log will constantly prompt attempt to call ngx.exec after sending out response headers This should be a common sense problem. We all know ...

1, Classloader type in JVM From the perspective of Java virtual machine, there are only two different classloaders: boot classloader and other classloaders. 1. Bootstrap classloader: This is implemented by c + +, which is mainly responsible for the core api under the JAVA_HOME/lib directory or the jar packaging specified by the - Xbootclasspath ...

Mybatis source code analysis I (initialization process) Recently, I learned the source part of mybatis. Now I am going to record my understanding process while learning. This article mainly records the initial process of mybatis, mainly including the following points: 1. What did initialization do 2. How to parse the parameters of mybatis-confi ...

A previous article: The difference between dependency lookup and dependency injection , this article talks about dependency lookup and dependency injection as the means to implement IOC. We use more dependency injection in our actual work. How much do you know about the specific patterns and types of ...

Object oriented encapsulation case Encapsulation is a major feature of object-oriented programming The first step of object-oriented programming -- encapsulating properties and methods into an abstract class Objects are created using classes, and then objects call methods The details of the object ar ...

Refer to Google or tools for this article Official website documents Describes the use of or tools. The description of packing problem is to put a set of items of given size into a container with fixed capacity. Generally, due to the capacity limitation of the container, it is impossible to put all item ...