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2015 ali中间件比赛项目,1. 通信模块: 涉及到了消息架构设计,每一个主题分配1-2个队列,这个是可以横向增加,考虑到了一个主题有多个消费者订阅,而且还有过滤条件,为了负载均衡,对应的队列投递消息是根据随机数对队列数取膜完成的。以上是内存队列。 2. 持久化系统:因为考虑到机器坏掉,broker不可用等等原因导致的消息丢失,就需要每次收到的消息必须及时落盘,这个就是比赛优化的重中之重。为此设计了一个小型的文件系统,借鉴阿里的rocketmq. 用一个大的日志文件,一般1G大小每个,和内存队列的结构映射到实体队列。整个日志文件是顺序文件,每条消息固定大小,里面有对应的队列号,消息号,还有长度等等。这个方便恢复消息到实体队列用的。 同步刷盘,异步刷盘,持久化必须可靠,所以一般是同步刷盘到日志文件,日志文件定时异步刷盘到实体队列,实体队列里面是索引,消息的本体在日志文件里面。为了加快大面积的写入速度,用了内存映射:内存映射文件首先将外存上的文件映射到内存中的一块连续区域,被当成一个字节数组进行处理,读写操作直接对内存进行操作,而后再将内存区域重新映射到外存文件,这就节省了中间频繁的对外存进行读写的时间,大大降低了读写时间
Alibaba Java Diagnostic Tool Arthas/Alibaba Java诊断利器Arthas
Asynchronous Http and WebSocket Client library for Java
Spring Boot Async Event Publisher
AutoLoadCache 是基于AOP+Annotation等技术实现的高效的缓存管理解决方案,实现缓存与业务逻辑的解耦,并增加异步刷新及“拿来主义机制”,以适应高并发环境下的使用。
BeanUtils library is a Java bean copy utility with powerful functionality and high performance.
Central Application Tracking
基于Spring Boot 和Spring Cloud开发的配置中心,无缝兼容Spring Boot 和 Spring Cloud应用
消息最终一致性方案,基于rabbitmq的分布式事务解决方案
Nepxion Discovery is an enhancement for Spring Cloud Discovery on Eureka + Consul + Zookeeper + Nacos with Nacos + Apollo config for gray release, router and isolation 灰度发布、服务隔离、服务路由、服务权重、黑/白名单过滤
rules engine
Example
An easy Java HttpClient framework based on Apache HttpClient. Mapper-scan mode is supported using JAVA dynamic proxy.
Simple and lightweight pool implementation
Excel导入导出工具(一行代码解决导出问题)
统计Controller方法的执行时间
Fastsocket is a highly scalable socket and its underlying networking implementation of Linux kernel. With the straight linear scalability, Fastsocket can provide extremely good performance in multicore machines. In addition, it is very easy to use and maintain. As a result, it has been deployed in the production environment of SINA.
init project
FlexyPool adds metrics and failover strategies to a given Connection Pool, allowing it to resize on demand.
Fork of tagtraum industries' GCViewer. Tagtraum stopped development in 2008, I aim to improve support for Sun's / Oracle's java 1.6+ garbage collector logs (including G1 collector)
:octocat: 使用 Python Flask + SQLAchemy + Celery + Redis + React 开发的用于迅速搭建并使用 WebHook 进行自动化部署和运维,支持 Github / GitLab / Gogs / GitOsc。
A tutorial for building a simple GraphQL service in Java with Spring Boot
Java诊断工具
Spring Boot starter module for gRPC framework.
GuvnorNG Playground
光 HikariCP・A solid high-performance JDBC connection pool at last.
High-performance JSON parser
HandlerSocket client for java
A declarative, efficient, and flexible JavaScript library for building user interfaces.
🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.
TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
An Open Source Machine Learning Framework for Everyone
The Web framework for perfectionists with deadlines.
A PHP framework for web artisans
Bring data to life with SVG, Canvas and HTML. 📊📈🎉
JavaScript (JS) is a lightweight interpreted programming language with first-class functions.
Some thing interesting about web. New door for the world.
A server is a program made to process requests and deliver data to clients.
Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.
Some thing interesting about visualization, use data art
Some thing interesting about game, make everyone happy.
We are working to build community through open source technology. NB: members must have two-factor auth.
Open source projects and samples from Microsoft.
Google ❤️ Open Source for everyone.
Alibaba Open Source for everyone
Data-Driven Documents codes.
China tencent open source team.