凌晨2点17分，某电商平台的后台监控突然发出刺耳警报——核心交易系统接口响应时间从平均200ms飙升至8秒，数据库CPU使用率突破95%，排队订单数在10分钟内累积超过5万笔。运维团队紧急排查后发现，问题源头竟是一次“看似无害”的需求变更：“在订单详 ...

在计算机科学的世界里，“缓存”被誉为最伟大的发明之一——它通过将频繁访问的数据存储在高速存储器（如CPU缓存）中，大幅减少了访问主内存的延迟，让程序运行如虎添翼。从CPU的多级缓存（L1/L2/L3）到数据库的查询缓存，再到应用层的本地缓存（如Guava Cache、Caffeine），缓存技术无处不在，成为提升性能的关键手段。

JUnit团队发布了JUnit 6.0.0（2025年9月30日公开可用），统一了Platform、Jupiter和Vintage的版本号，并将最低Java版本提升至17（对于Kotlin测试代码则是Kotlin 2.2）。此更新增加了对Kotlin suspend测试的原生支持，新的CancellationToken ...

多年来，Java 一直是编程世界里绕不开的老面孔。从 90 年代末的企业级应用到如今的大型服务端系统，Java 凭借“写一次，到处跑”的理念，占据了无数开发者的日常。它稳定、成熟、生态庞大，但也常被人诟病——臃肿、语法冗长、速度不够快。于是，Java ...

本篇文章将介绍使用Jackson库处理JSON数据的多种高级技术，涵盖了JSON解析、查询、序列化/反序列化控制等核心功能。主要实现 ...

Liz Simmons is an education staff writer at Forbes Advisor. She has written about higher education and career development for various online publications since 2016. She earned a master’s degree in ...

November 7, 2025 • Health Secretary Robert F. Kennedy Jr.'s Centers for Disease Control and Prevention has launched an unprecedented review of routine shots given to kids, alarming public health ...

More than 420 anti-science bills attacking longstanding public health protections – vaccines, milk safety and fluoride – have been introduced in statehouses across the U.S. this year, part of an ...

Hamas carried out mass public executions in Gaza on Monday, gruesome video shows — as the bloodthirsty terror group desperately seeks to maintain control over the ...

HAJIN, Syria—The two American-backed Kurdish soldiers were riding in a pickup truck past a row of shops when Islamic State militants on motorcycles opened fire with AK-47s, killing them both. A shop ...