
哈啰两轮c端资深后端开发-上海
社招全职5年以上技术地点:上海状态:招聘
任职要求
1. 背景与经验: 计算机相关专业本科及以上学历。 5年+ Java后端开发经验。 3年+ 互联网公司核心C端产品开发经验!(必须拥有直面海量用户的系统实战经验) 2. C端高并发核心能力: 精通Java并发编程:深刻理解JUC、线程池、锁优化、并发容器、CompletableFuture等。 精通高并发架构模式:缓存(Redis高阶应用)、消息队列(Kafka/RocketMQ)、分库分表(ShardingSphere)、异步化、弹性扩缩容的实战经验。 精通性能诊断与调优:JVM调优(G1/ZGC)、MySQL深度优化(执行计划、锁、事务隔离)、网络IO模型。 3. 技术栈: 精通Spring Boot/Spring Cloud Alibaba (Nacos, Sentinel, Seata)/Dubbo 等微服务生态。 精通MySQL数据库设计与优化,熟悉主流NoSQL (Redis/MongoDB/ES)。 4. 分布式系统: 深入理解分布式原理(CAP、一致性算法、分布式事务解决方案如TCC/Saga)。 5. C端特质: 强烈的用户导向意识:理解C端业务逻辑,关注技术决策对用户体验的影响。 应对高流量洪峰经验:经历过618、双11、春节红包、明星直播等真实大促或流量高峰保障。 快速迭代与抗压能力:适应C端业务快速变化,能在高压下保障系统稳定。 6. 工程素养: 熟练使用Git/Maven/Jenkins/Docker等工具链,具备良好编码习惯与单元测试意识。 熟悉Linux操作与常用命令。 --- 优先考虑项 (强加分项): 1. C端高并发标杆经验: 主导设计/开发过 日活超500万 或 QPS峰值过5万 的C端核心系统(如:交易下单、支付、即时通讯、Feed流、秒杀)。 有大流量场景下的全链路压测实战经验。 2. 极致性能优化案例: 成功将核心接口 RT 从100ms优化至20ms 级别,或解决过 GC导致的服务卡顿 等疑难问题。 有热点Key探测与动态分片、精细化的限流熔断策略设计经验。 3. 特定C端场景经验: 营销、用户增长系统开发经验。 4. 技术影响力: 有技术博客、开源贡献、社区演讲经历
工作职责
核心职责: 1. 负责核心C端业务系统架构设计与开发: 深入理解用户场景与需求,设计并开发高性能、高可用、可扩展的Java后端服务,直接支撑亿级用户产品功能。 聚焦用户体验:优化接口响应速度、系统稳定性,减少错误率,提升用户满意度与留存。 2. 高并发C端系统攻坚与优化: 设计并落地应对 千万级日活 (DAU) / 百万级QPS 的高并发、低延迟技术方案。 深度性能调优:解决线上高并发场景下的JVM GC、线程阻塞、慢SQL、缓存穿透/雪崩、网络瓶颈等核心问题。 设计实现C端核心链路保障机制:分布式锁、幂等控制、精准限流(用户/接口维度)、熔断降级、热点探测、柔性可用。 3. C端业务快速迭代与稳定性保障: 支撑快速产品迭代与AB测试,设计灵活可扩展的架构,平衡开发效率与系统稳定。 建立并完善C端系统监控、告警、应急响应机制,快速定位并恢复线上故障,保障用户体验。 4. 分布式架构实践: 基于微服务(Spring Cloud/Dubbo)构建高可靠分布式系统,解决服务治理、分布式事务、数据一致性难题。 5. 技术驱动业务: 通过技术创新(如引入新中间件、优化架构)提升系统容量、降低延迟、节约成本,直接赋能业务增长。 6. 技术规范与传承: 制定代码规范、设计规范,主导Code Review,培养初中级工程师C端高并发意识与能力。
包括英文材料
学历+
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.
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.
高并发+
https://www.baeldung.com/concurrency-principles-patterns
In this tutorial, we’ll discuss some of the design principles and patterns that have been established over time to build highly concurrent applications.
https://www.baeldung.com/java-concurrency
Handling concurrency in an application can be a tricky process with many potential pitfalls. A solid grasp of the fundamentals will go a long way to help minimize these issues.
https://www.oreilly.com/library/view/concurrency-in-go/9781491941294/
You’ll understand how Go chooses to model concurrency, what issues arise from this model, and how you can compose primitives within this model to solve problems.
https://www.oreilly.com/library/view/modern-concurrency-in/9781098165406/
With this book, you'll explore the transformative world of Java 21's key feature: virtual threads.
https://www.youtube.com/watch?v=qyM8Pi1KiiM
https://www.youtube.com/watch?v=wEsPL50Uiyo
缓存+
https://hackernoon.com/the-system-design-cheat-sheet-cache
The cache is a layer that stores a subset of data, typically the most frequently accessed or essential information, in a location quicker to access than its primary storage location.
https://www.youtube.com/watch?v=bP4BeUjNkXc
Caching strategies, Distributed Caching, Eviction Policies, Write-Through Cache and Least Recently Used (LRU) cache are all important terms when it comes to designing an efficient system with a caching layer.
https://www.youtube.com/watch?v=dGAgxozNWFE
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.
消息队列+
https://www.youtube.com/watch?v=xErwDaOc-Gs
Kafka+
https://developer.confluent.io/what-is-apache-kafka/
https://www.youtube.com/watch?v=CU44hKLMg7k
https://www.youtube.com/watch?v=j4bqyAMMb7o&list=PLa7VYi0yPIH0KbnJQcMv5N9iW8HkZHztH
In this Apache Kafka fundamentals course, we introduce you to the basic Apache Kafka elements and APIs, as well as the broader Kafka ecosystem.
RocketMQ+
https://www.baeldung.com/apache-rocketmq-spring-boot
In this tutorial, we’ll create a message producer and consumer using Spring Boot and Apache RocketMQ, an open-source distributed messaging and streaming data platform.
JVM+
https://www.freecodecamp.org/news/jvm-tutorial-java-virtual-machine-architecture-explained-for-beginners/
https://www.youtube.com/watch?v=e2zmmkc5xI0
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.
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.
Spring Cloud+
[英文] Spring Cloud Series
https://www.baeldung.com/spring-cloud-series
Learn Spring Cloud including concepts, additional libraries and examples for distributed systems.
Nacos+
https://nacos.io/docs/latest/overview/
Nacos 是 Dynamic Naming and Configuration Service 的首字母简称,一个易于构建 AI Agent 应用的动态服务发现、配置管理和AI智能体管理平台。
Dubbo+
https://dubbo.apache.org/en/overview/mannual/java-sdk/tasks/
微服务+
https://learn.microsoft.com/en-us/training/modules/dotnet-microservices/
Microservice applications are composed of small, independently versioned, and scalable customer-focused services that communicate with each other by using standard protocols and well-defined interfaces.
https://microservices.io/
Microservices - also known as the microservice architecture - is an architectural style that structures an application as a collection of two or more services.
https://spring.io/microservices
Building small, self-contained, ready to run applications can bring great flexibility and added resilience to your code.
https://www.ibm.com/think/topics/microservices
Microservices, or microservices architecture, is a cloud-native architectural approach in which a single application is composed of many loosely coupled and independently deployable smaller components or services.
https://www.youtube.com/watch?v=CqCDOosvZIk
https://www.youtube.com/watch?v=hmkF77F9TLw
Learn about software system design and microservices.
NoSQL+
https://nosql-database.org/
Everything about NoSQL Systems – Types, Benefits, and Real-World Uses
https://piaosanlang.gitbooks.io/mongodb/content/section1.1.html
NoSQL(NoSQL = Not Only SQL ),即"不仅仅是SQL",指的是非关系型的数据库。是对不同于传统的关系型数据库管理系统的统称。
https://www.youtube.com/watch?v=0buKQHokLK8
NoSQL databases can operate in multiple modes: as key-value store, document store or wide column store.
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.
ElasticSearch+
https://www.youtube.com/watch?v=a4HBKEda_F8
Learn about Elasticsearch with this comprehensive course designed for beginners, featuring both theoretical concepts and hands-on applications using Python (though applicable to any programming language). The course is structured in two parts: first covering essential Elasticsearch fundamentals including index management, document storage, text analysis, pipeline creation, search functionality, and advanced features like semantic search and embeddings; followed by a practical section where you'll build a real-world website using Elasticsearch as a search engine, working with the Astronomy Picture of the Day (APOD) dataset to implement features such as data cleaning pipelines, tokenization, pagination, and aggregations.
分布式系统+
https://www.distributedsystemscourse.com/
The home page of a free online class in distributed systems.
https://www.youtube.com/watch?v=7VbL89mKK3M&list=PLOE1GTZ5ouRPbpTnrZ3Wqjamfwn_Q5Y9A
CAP+
https://www.hellointerview.com/learn/system-design/core-concepts/cap-theorem
Master the fundamental tradeoffs between consistency and availability in distributed systems.
https://www.ibm.com/think/topics/cap-theorem
The CAP theorem says that a distributed system can deliver only two of three desired characteristics:
consistency, availability and partition tolerance (the ‘C,’ ‘A’ and ‘P’ in CAP).
https://www.youtube.com/watch?v=BHqjEjzAicA
算法+
https://roadmap.sh/datastructures-and-algorithms
Step by step guide to learn Data Structures and Algorithms in 2025
https://www.hellointerview.com/learn/code
A visual guide to the most important patterns and approaches for the coding interview.
https://www.w3schools.com/dsa/
Git+
https://www.youtube.com/watch?v=rH3zE7VlIMs
Learn Git from start to finished in this full course written by ThePrimeagen.
Maven+
https://liaoxuefeng.com/books/java/maven/index.html
Maven是一个Java项目管理和构建工具,它可以定义项目结构、项目依赖,并使用统一的方式进行自动化构建,是Java项目不可缺少的工具。
https://www.youtube.com/watch?v=Xatr8AZLOsE
You'll learn how to use Maven like a professional: installations, using the mvn wrapper, using Maven together with IDEs, and of course the Maven basics.
Jenkins+
https://www.youtube.com/watch?v=f4idgaq2VqA
Docker+
https://www.youtube.com/watch?v=GFgJkfScVNU
Master Docker in one course; learn about images and containers on Docker Hub, running multiple containers with Docker Compose, automating workflows with Docker Compose Watch, and much more. 🐳
https://www.youtube.com/watch?v=kTp5xUtcalw
Learn how to use Docker and Kubernetes in this complete hand-on course for beginners.
编程规范+
[英文] Google Style Guides
https://google.github.io/styleguide/
Every major open-source project has its own style guide: a set of conventions (sometimes arbitrary) about how to write code for that project. It is much easier to understand a large codebase when all the code in it is in a consistent style.
Linux+
https://ryanstutorials.net/linuxtutorial/
Ok, so you want to learn how to use the Bash command line interface (terminal) on Unix/Linux.
https://ubuntu.com/tutorials/command-line-for-beginners
The Linux command line is a text interface to your computer.
https://www.youtube.com/watch?v=6WatcfENsOU
In this Linux crash course, you will learn the fundamental skills and tools you need to become a proficient Linux system administrator.
https://www.youtube.com/watch?v=v392lEyM29A
Never fear the command line again, make it fear you.
https://www.youtube.com/watch?v=ZtqBQ68cfJc
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.
相关职位

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1. 识别短途出行用户线上互动潜在需求,设计好玩的游戏化骑行产品,提升骑行用户线上停留时长; 2. 通过活动奖励等产品运营手段提升产品留存活跃,为游戏化骑行产品活跃及体验负责; 3. 拆解业务目标和方向并转化为有效的产品解决方案,满足业务发展诉求; 4. 能够独立完成功能梳理、需求设计、把控需求质量和项目节奏,协同研发团队落地产品方案,并拿到结果 。
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社招4年以上设计
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社招1-3年技术
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