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hwlsniper's Projects

abu icon abu

阿布量化交易系统(股票,期权,期货,比特币,机器学习) 基于python的开源量化交易,量化投资架构

ace-merge icon ace-merge

Spring Cloud 跨服务数据聚合小框架,解决服务拆分的静态数据聚合之痛。举个栗子:两个服务,A服务的某张表用到了B服务的某张表的值,我们在对A服务那张表查询的时候,把B服务某张表的值聚合在A服务的那次查询过程中。

adempiere icon adempiere

ADempiere Business Suite ERP/CRM/MFG/SCM/POS done the Bazaar way in an open and unabated fashion. Focus is on the Community that includes Subject Matter Specialists, Implementors and End-Users.

adex-core icon adex-core

AdEx Core: the smart contracts that power the AdEx Network

advanced-go-programming-book icon advanced-go-programming-book

:books: 《Go语言高级编程》开源图书,涵盖CGO、Go汇编语言、RPC实现、Protobuf插件实现、Web框架实现、分布式系统等高阶主题(完稿)

agile-service icon agile-service

The service is responsible for Agile process management and providing users with a better user experience through rich display.

albianj2 icon albianj2

Albianj是我们设计并开发的一套分布式统一框架。他主要是面向海量数据处理、海 量数据访问、并解决互联网开发中经常会碰到的数据海量增长问题,也一并解决 互联网开发团队中,因开发人员的水平参差不齐而导致的代码质量不可控问题。它主要有简单小巧的IoC,ORM,数据路由,缓存集成,分布式唯一id等等功能。

algernon icon algernon

:tophat: Small self-contained pure-Go web server with Lua, Markdown, HTTP/2, QUIC, Redis and PostgreSQL support

algorithm-exercise icon algorithm-exercise

Data Structure and Algorithm notes. 数据结构与算法/leetcode/lintcode题解/

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

alios-things icon alios-things

AliOS Things released by Alibaba is an open-source implementation of operating system (OS) for Internet of Things (IoT).

alisql icon alisql

AliSQL is a MySQL branch originated from Alibaba Group. Fetch document from Release Notes at bottom.

alluxio icon alluxio

Memory-Centric Virtual Distributed Storage System

angel icon angel

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

ants icon ants

🐜⚡️A high-performance goroutine pool for go

anychat icon anychat

anychat是一个极简纯净的websocket聊天插件,支持对接任何身份系统,嵌入方只需提供三个API即可进行实时通讯。支持个人聊天、群聊天、上下线、查看聊天记录、离线消息推送等,服务器绝对控制权的推送机制,合理的线程设计,支持mongodb存储聊天记录,天生的嵌入式支持。

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