Fenn Zheng's repositories
scala-for-the-Impatient
My solutions for "Scala for the Impatient" exercises.
node-service-cluster
A service cluster framework for nodejs
xmindparser-java
xmind解析为json，对象，支持xmindzen，旧版xmind8
171208newCrawler
Java自用爬虫框架之巨潮网站A股爬虫
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
boot67
2016-2017末尾写的boot项目，里面含有A股交易所行情源解析的核心片段+es客户端的使用，异步持久化的线程模型
byte-buddy
Runtime code generation for the Java virtual machine.
cabot-alert-email
An email plugin for cabot
cloud-native-starter
Cloud Native Starter for Java/Jakarta EE based Microservices on Kubernetes and Istio
demo-agent
java agent demo
dHydra
主要针对多数据源多策略实时计算的量化分析开发框架。提供新浪Level2等数据获取
dubbo
Dubbo is a distributed service framework enpowers applications with service import/export capability with high performance RPC.
guano
zookeeper dump and restore utility
instagram-scraper
Scrapes an instagram user's photos and videos
istock
:point_right:一个基于spring boot 实现的java股票爬虫(仅支持A股)，如果你:heart:请:star: . V2升级版正在开发中！
java-agents-demo
An example of bytecode modifying Java agents done with Javassist and Byte Buddy
metrics
:chart_with_upwards_trend: Capturing JVM- and application-level metrics. So you know what's going on.
promql_java_client
java client for prometheus http api
redisson
Redisson - Redis Java client with features of In-Memory Data Grid. Over 50 Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Publish / Subscribe, Bloom filter, Spring Cache, Tomcat, Scheduler, JCache API, Hibernate, MyBatis, RPC, local cache ...
rocketmq-exporter
Apache RocketMQ Prometheus Exporter
Sentinel
A lightweight powerful flow control component enabling reliability and monitoring for microservices. (轻量级的流量控制、熔断降级 Java 库)
stockrecorder
记录A股美股股票分时数据
Takin
Takin is an Java-based, open-source system designed to measure online environmental performance test for full-links, Especially for microservices. Through ArchKeeper, middlewares and applications can identify real online traffic and test traffic, ensure that they enter the right databases.
thrift
Mirror of Apache Thrift
vue-pipeline
A pipeline component like jenkins blue ocean plugin.