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System.gc 之后到底发生了什么？

本文基于 OpenJDK17 进行讨论在 JDK NIO 针对堆外内存的分配场景中，我们经常会看到 System.gc 的身影，比如当我们通过 FileChannel#map 对文件进行内存映射的时候，如果 JVM 进程虚拟内存空间...

# java

Lee9个月前

0130

Windows下Cmake编译Poco库

Windows下Cmake编译Poco库,C++ Windows下使用Cmake编译Poco库 1.编译前准备：先配置OpenSSL环境 (openssl version -a查看) 如果openssl是1.0.*版本，Poco版本最高用1.9.4。如果1.1或者更高，...

# c++

Lee2年前

05010

Legacy Interface

Legacy Interface, Suppose you are working on a very very big java project. Congratulations!!! Problem Scenario Suddenly your senior comes to your desk and says- 'Hey X, we need to ...

# java

kity4年前

0208

字符编码发展史2 — ISO-8859-N

字符编码发展史2 — ISO-8859-N, 2.2. 第二个阶段本地化 2.2.1. ANSI 2.2.2. ISO/IEC 8859-N 2.2.2.1. 什么是ISO/IEC 8859-N? 2.2.2.2. ISO 8859-1的编码表上一篇《字符编码发展史1 — ASCII...

# c++

Lee4个月前

05315

Caching & IOStrategy @ SwayDB

Caching & IOStrategy @ SwayDB,We all know that Memory IO is 50-200 times faster than Disk IO! Caching plays a decent role in boosting read and compaction performance but some machi...

# java # kotlin # scala

kity5年前

04115

OAuth 2.0（Open Authorization 2.0）授权框架入门介绍

拓展阅读 OAuth 2.0-01-Overview OAuth2-02-java 整合 OAuth2-03-springboot 整合 oauth2 是什么？ OAuth 2.0（Open Authorization 2.0）是一种授权框架，允许第三方应用程序访问用户在另一个服...

# java

Lee9个月前

0140

npm i 安装的依赖项目,运行正常,换成pnpm i安装的依赖运行报错

npm i 安装的依赖项目,运行正常,换成pnpm i安装的依赖运行报错,报错信息大概如下 Failed to compile with 15 errors 00:47:21These dependencies were not found: * codemirror/addon/di...

# vue

Lee2年前

0100

10 Programming Languages Side by Side (JS, Python, Ruby, PHP, GO, Rust, Dart, C#, Java, Ballerina)

10 Programming Languages Side by Side (JS, Python, Ruby, PHP, GO, Rust, Dart, C#, Java, Ballerina),Using the below you can see the basics of 10 different languages. For most of the...

# java # python # javascript

kity4年前

03411

the LivinGrimoire software design pattern

the LivinGrimoire software design pattern,the LivinGrimoire is a software design pattern, that absorbs skills. 1 line of code is needed to add a skill (similar to the matrix learn ...

# java # python # cpp

kity4个月前

0318

Mocking Logger in Java with Mockito

Mocking Logger in Java with Mockito,Yes, you read it correctly: 'Mocking Logger in Java'. That might sound very weird when you see this for the first time but there are some partic...

# java # testing

kity5年前

02315