Java

Java Nio

Java NIO 的核心优势是用一个线程通过 Selector 管理成千上万个连接（非阻塞多路复用），同时借助零拷贝（transferTo）和直接缓冲区大幅提升 I/O 吞吐量，适合高并发场景。

Eglot for Java

This note covers how neo-emacs runs Java under Eglot: picking jdtls, installing it, and making go-to-definition work for JDK / Maven classes that only exist as .class files.

Java Dev Work Flow

在典型的 Java 后端迭代里，真正吞噬效率的不止有代码编写，还有冗长的重启和低质量发布反馈。

Java Caffeine 高性能本地缓存

Caffeine 是 Guava Cache 作者的后续作品，基于 W-TinyLFU 淘汰算法，目前 Java 本地缓存里性能最好。

Mqtt Usage

MQTT is a standard messaging protocol for the Internet of Things (IoT).MQTT today is used in a wide variety of industries, such as automotive, manufacturing, telecommunications, oil and gas, etc.

JeecgBoot 低代码平台II

最近开始使用 JEECG 搭建新项目，随着深入使用，对这款低代码平台有了更深层次的了解与体验。

JeecgBoot 低代码平台

国货之光产品、低代码平台 + 代码生成可二次迭代逻辑。

H2 Usage

h2 features are Very fast, open source, JDBC API, Embedded and server modes; in-memory databases, Browser based Console application, Small footprint: around 2.5 MB jar file size.

Sentinel Usage

Sentinel 是阿里巴巴开源的面向分布式服务架构的 流量防护 组件。它以流量为切入点，从 流量控制、熔断降级、系统负载保护 等多个维度保障服务稳定性。

Ftp Resume Transfer

Resumable transfer significantly improves the efficiency of file transfers,It is very efficient and convenient.Let’s try it in java