上一次讨论类似问题，还是在月初。刚好有老外网友做了一个实验，对 62 门编程语言速度做了一个比较，通过莱布尼茨公式计算 π 值，然后给出运行速度的排名，最慢是 Python （CPython）。实验过程和结果都公开透明，参见网址：https://github.com/niklas-heer/speed-comparison。 有时候，我挺理解那些对 Java 有偏见的程序员的。比如，Python ...

OpenJDK的Amber项目发布了一份全新的设计说明，名为“Java面向数据编程：超越记录类（Record）”，阐述了一种探索性的方案，以便将类似记录类的特性拓展至更灵活的类设计中。该文档引入了载体类（carrier class）与载体接口（carrier ...

Java idiomatic SDK for the Gemini Developer APIs and Vertex AI APIs. You can create a client by configuring the necessary environment variables. Configuration setup instructions depends on whether you ...

Nizam Syafei was rushed to hospital in West Java, Indonesia, after suffering extensive injuries - and was asked to point out who had caused his wounds moments before he passed away ...

2025年下半年，全球网络安全态势发生了微妙而深刻的变化。卡巴斯基实验室发布的遥测数据揭示了一个令人警醒的趋势：QR码钓鱼攻击（Quishing）的数量在该时期内激增了五倍。这一数据并非简单的线性增长，而是反映了攻击生态系统的质变。攻击者不再满足于小 ...

Rubio Warns Iran That ‘Hardest Hits’ Are Yet to Come LIVE Trump Predicts Weeks of War as Military Strikes Widen A top Iranian official pledges attacks on tankers looking to pass through Strait of ...

Abstract: In-band Network Telemetry (INT) and sketching algorithms are two promising directions for measuring network traffic in real time. To combine sketch with INT and preserve their advantages, a ...

Safe coding is a collection of software design practices and patterns that allow for cost-effectively achieving a high degree ...

这不是一条 SQL 就搞定的事情吗？ 我曾经负责过的并发量蛮高的商品库存系统，核心扣减逻辑真的就是靠一条 SQL 搞定的。没有引入分布式锁（如 Redis Lock）或者消息队列。 核心思路其实就是数据库层面的乐观锁。利用 MySQL 的行锁特性 + UPDATE 语句的原子性，再配合 Java 中判断影响行数（Affected ...