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younfor's Projects

aap icon aap

AAP is an Admin Platform

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

android-qq icon android-qq

an im, you can send text,voice,files as long as you are connected with others by local network. No server

ap icon ap

Java有关AP的界面

bubbledrag icon bubbledrag

高仿QQ新版聊天消息提示气泡,可以拖动,反弹跳动

canal_mysql_nosql_sync icon canal_mysql_nosql_sync

基于canal 的 mysql 与 redis/memcached/mongodb 的 nosql 数据实时同步方案 案例,canal client

cqdrawerviewcontroller icon cqdrawerviewcontroller

iOS Swift侧拉抽屉控件, 只有一个文件,灵活的左侧拉,右侧拉。代码少可以自己修改增加效果

cs2-cpp icon cs2-cpp

Minimum-cost maximum-flow. This is a "ported to C++" version of the famous scaling push-relabel CS2 mcmf algorithm of A.V. Goldberg [1]. This C++ implementation is developed from the original C code. [1] A.V. Goldberg, "An Efficient Implementation of a Scaling Minimum-Cost Flow Algorithm," J. Algorithms, vol. 22, pp. 1-29, 1997.

deeplearning-ocr icon deeplearning-ocr

Build an Optical Character Recognition service using deep learning method

deepqa icon deepqa

My tensorflow implementation of "A neural conversational model", a Deep learning based chatbot

deepqa2 icon deepqa2

Train and serve QA Model with TensorFlow

gjson icon gjson

Get JSON values quickly - JSON Parser for Go

ivideo icon ivideo

一个可以观看国内主流视频平台所有视频的客户端(Mac、Windows、Linux),包括 VIP 资源

kaggle_diabetic icon kaggle_diabetic

Team o_O solution for the Kaggle Diabetic Retinopathy Detection Challenge

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