京东后端开发工程师岗
社招全职3年以上软件开发岗地点:北京状态:招聘
任职要求
职位要求: 1. 具备3年以上后端开发工作经验, 符合京东价值观:客户为先、诚信、创新、感恩、拼搏、担当; 2. 具有扎实的Java编程基础,丰富Java多线程编程和调优经验,熟知Java JVM、GC、NIO等知识,对流行开源框架如Spring、Spring Boot有深入的了解和实战经验; 3. 熟悉使用目前流行的分布式组件和框架,并深入了解其中工作原理和设计思路,如:Redis、ZooKeeper、RPC、消息中间件等; 4. 具有丰富的数据库使用和优化经验,能对各种应用场景进行精准DB选型,包括:MySQL、HBase,MongoDB等。 符合京东价值观:客户为先、创新、拼搏、担当、感恩、诚信。
工作职责
职位描述: 负责京东创新零售核心模块研发,主要职责包括以下几点: 1.系统设计与架构:负责开发和优化后端系统,包括但不限于服务架构设计、数据库设计以及系统性能优化; 2.代码开发与维护:使用Java语言编写高质量、高性能的代码,参与整个开发周期,包括编码、测试、部署和维护; 3.性能优化:监控应用性能,定期进行性能评估和优化,确保应用的高效运行和良好用户体验; 4.团队合作与技术分享:与产品、设计和测试团队紧密合作,确保产品需求的准确实现,并在团队内进行技术分享和交流; 5.问题诊断与解决:快速响应生产环境中出现的问题,进行问题诊断和故障排除,确保应用的稳定运行。
包括英文材料
后端开发+
https://www.youtube.com/watch?v=tN6oJu2DqCM&list=PLWKjhJtqVAbn21gs5UnLhCQ82f923WCgM
Learn what technologies you should learn first to become a back end web developer.
Java+
https://www.youtube.com/watch?v=eIrMbAQSU34
Master Java – a must-have language for software development, Android apps, and more! ☕️ This beginner-friendly course takes you from basics to real coding skills.
多线程+
https://liaoxuefeng.com/books/java/threading/basic/index.html
和单线程相比,多线程编程的特点在于:多线程经常需要读写共享数据,并且需要同步。
https://www.youtube.com/watch?v=_uQgGS_VIXM&list=PLsc-VaxfZl4do3Etp_xQ0aQBoC-x5BIgJ
https://www.youtube.com/watch?v=IEEhzQoKtQU
https://www.youtube.com/watch?v=mTGdtC9f4EU&list=PLL8woMHwr36EDxjUoCzboZjedsnhLP1j4
https://www.youtube.com/watch?v=TPVH_coGAQs&list=PLk6CEY9XxSIAeK-EAh3hB4fgNvYkYmghp
https://www.youtube.com/watch?v=xPqnoB2hjjA
This video is an introduction to multithreading in modern C++.
https://www.youtube.com/watch?v=YKBwKy5PrpQ
Rust threading is easy to implement and improves the efficiency of your applications on multi-core systems!
JVM+
https://www.freecodecamp.org/news/jvm-tutorial-java-virtual-machine-architecture-explained-for-beginners/
https://www.youtube.com/watch?v=e2zmmkc5xI0
GC+
[英文] Garbage Collection
https://craftinginterpreters.com/garbage-collection.html
The GC doesn’t throw away the memory, it reclaims it to be reused for new data.
https://learn.microsoft.com/en-us/dotnet/standard/garbage-collection/fundamentals
In the common language runtime (CLR), the garbage collector (GC) serves as an automatic memory manager.
https://www.oracle.com/webfolder/technetwork/tutorials/obe/java/gc01/index.html
This tutorial covers the basics of how Garbage Collection works with the Hotspot JVM.
https://www.youtube.com/watch?v=c32zXYAK7CI
How does memory management work? In C you had to manage things yourself, but modern languages take care of a lot of it for you.
Spring+
https://liaoxuefeng.com/books/java/spring/index.html
Spring是一个支持快速开发Java EE应用程序的框架。它提供了一系列底层容器和基础设施,并可以和大量常用的开源框架无缝集成,可以说是开发Java EE应用程序的必备。
https://spring.io/guides/gs/rest-service
https://spring.io/quickstart
Level up your Java code and explore what Spring can do for you.
Spring Boot+
https://spring.io/guides/gs/spring-boot
his guide provides a sampling of how Spring Boot helps you accelerate application development.
https://www.youtube.com/watch?v=Nv2DERaMx-4&list=PLzUMQwCOrQTksiYqoumAQxuhPNa3HqasL
The author teaches you how to use Spring Boot from a complete beginner, to building a REST API with a real database, Dockerising it and deploying it to the cloud.
Redis+
[英文] Developer Hub
https://redis.io/dev/
Get all the tutorials, learning paths, and more you need to start building—fast.
https://www.runoob.com/redis/redis-tutorial.html
REmote DIctionary Server(Redis) 是一个由 Salvatore Sanfilippo 写的 key-value 存储系统,是跨平台的非关系型数据库。
https://www.youtube.com/watch?v=jgpVdJB2sKQ
In this video I will be covering Redis in depth from how to install it, what commands you can use, all the way to how to use it in a real world project.
ZooKeeper+
https://kubernetes.io/docs/tutorials/stateful-application/zookeeper/
This tutorial demonstrates running Apache Zookeeper on Kubernetes using StatefulSets, PodDisruptionBudgets, and PodAntiAffinity.
https://www.baeldung.com/java-zookeeper
Apache ZooKeeper is a distributed coordination service which eases the development of distributed applications.
[英文] Zookeeper Tutorial
https://www.tutorialspoint.com/zookeeper/index.htm
ZooKeeper is a distributed co-ordination service to manage large set of hosts.
RPC+
https://javaguide.cn/distributed-system/rpc/rpc-intro.html
为什么要 RPC ? 因为,两个不同的服务器上的服务提供的方法不在一个内存空间,所以,需要通过网络编程才能传递方法调用所需要的参数。并且,方法调用的结果也需要通过网络编程来接收。
https://www.youtube.com/watch?v=S2osKiqQG9s
This video is part of an 8-lecture series on distributed systems, given as part of the undergraduate computer science course at the University of Cambridge.
中间件+
https://www.youtube.com/watch?v=1oWPUpMheGk
MySQL+
https://juejin.cn/post/7190306988939542585
这是一篇 MySQL 通关一篇过硬核经验学习路线,包括数据库相关知识,SQL语句的使用,数据库约束,设计等。
[英文] MySQL Tutorial
https://www.mysqltutorial.org/
your go-to resource for mastering MySQL in a fast, easy, and enjoyable way.
https://www.youtube.com/watch?v=5OdVJbNCSso
MySQL SQL tutorial for beginners
https://www.youtube.com/watch?v=7S_tz1z_5bA
This beginner-friendly course teaches you SQL from scratch.
HBase+
[英文] HBase Tutorial
https://www.tutorialspoint.com/hbase/index.htm
HBase is a data model that is similar to Google's big table designed to provide quick random access to huge amounts of structured data. This tutorial provides an introduction to HBase, the procedures to set up HBase on Hadoop File Systems, and ways to interact with HBase shell.
MongoDB+
https://learnxinyminutes.com/mongodb/
MongoDB is a NoSQL document database for high volume data storage.
https://studio3t.com/academy/#courses
The fastest way to learn MongoDB
https://www.youtube.com/watch?v=c2M-rlkkT5o
This video will give you and introduction to MongoDB in 1 Hour. Afterwards I recommend exploring aggregation, replication, and sharding.
https://www.youtube.com/watch?v=ExcRbA7fy_A&list=PL4cUxeGkcC9h77dJ-QJlwGlZlTd4ecZOA
You'll learn how to use MongoDB (a NoSQL database) from scratch. You'll also learn how to integrate it into a simple Node.js API.
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