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gaoshanxiaoao's Projects

103976 icon 103976

103976个英语单词库(sql版,csv版,Excel版)包含英文单词,中文翻译,单词的词性及多种词义,执行SQL语句就可以生成表,支持SQL Server,MySQL等多种数据库

akshare icon akshare

AKShare is an elegant and simple financial data interface library for Python, built for human beings! 开源财经数据接口库

alibaba-mom icon alibaba-mom

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

angel icon angel

A Flexible and Powerful Parameter Server for large-scale machine learning

bootstrap icon bootstrap

The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.

cs-books icon cs-books

📚 Computer Science Books 计算机技术类书籍 PDF

didishit icon didishit

网络最火的O2O应用,价值100亿美刀的滴滴拉屎APP源码。

diff-match-patch icon diff-match-patch

Diff Match Patch is a high-performance library in multiple languages that manipulates plain text.

google-api-nodejs-client icon google-api-nodejs-client

Google's officially supported Node.js client library for accessing Google APIs. Support for authorization and authentication with OAuth 2.0, API Keys and JWT (Service Tokens) is included. API Reference Docs: http://google.github.io/google-api-nodejs-client/

hello-algo icon hello-algo

《Hello 算法》:动画图解、一键运行的数据结构与算法教程,支持 Python, C++, Java, C#, Go, Swift, JS, TS, Dart, Rust, C, Zig 等语言。English edition ongoing

maxent icon maxent

use Maximum Entropy Model do some experiments

mean-chat icon mean-chat

Simple Chat app using Socket.IO, MongoDB, Express, Angular, and NodeJS.

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