How to get high concurrency experience?
This is a question that the system invited me to answer when I visited Zhihu today, which also triggered some of my thinking: Why does everyone want to gain high-concurrency experience; want to have high-concurrency system design skills?
The reason LZ believes that there are three main points:
- Salary increase : After having the skills of high concurrent system design, you can get more substantial income.
- Promotion : High-concurrency system design is one of the essential skills for a junior and intermediate developer to be promoted to a high-level developer or even a system architect.
- Interview : Basically, some advanced development positions and large-scale recruitments will conduct in-depth investigations on the design of high-concurrency systems during interviews. It can even be said that this is a point that 100% will be asked by the interviewer. Only those who have relevant skills can pass the interview smoothly. Get your favorite offer.
After figuring out why, let's go back to the topic and talk about how ordinary programmers can get high concurrency experience:
For small partners who are in Internet companies and can participate in the construction of some distributed micro-service projects of the company in the future, if they want to gain high-concurrency experience, they only need to learn from the bosses of the company. It is precisely this kind of people who are difficult to deal with : they have always been in a traditional industry, the technology stack they have been exposed to is too old, and there are no outstanding projects on their resumes (many fans of LZ are such people). Judging from the fact that a junior Java interviewer will basically be asked questions about distributed high concurrency and multi-threading, if you don’t reserve in advance, you will definitely not be able to pass the interview, let alone the follow-up senior development post and rush to a big factory. So in order to better help my fans and friends who have been supporting me for a long time to learn how to improve/response to interviews, LZ brings you a set of 2023 latest high-concurrency system design records from Ali & JD.com, let’s look down :
The latest high-concurrency system design record of 2023 major manufacturers
For us Internet people, learning on the shoulders of giants is the most efficient way of learning. The three architecture design memos brought to you in this article add up to nearly a thousand pages. Each chapter is displayed, and those who need the full version only need to add a small assistant: ikt4435 to get it for free~ Let's take a look at the first one, the high-concurrency booklet from Ali:
- Tens of billions of concurrent system design
- Basic
High concurrency performance optimization
- Database
Database vertical split
- Cache
Cache read and write strategy
- Message Queue
The correct posture to reduce message delay
- Distributed Services
Service Deployment
- Maintenance
Current limiting algorithm
- Combat articles
Push-pull combination scheme
- The core technology of JD.com's billion-level traffic website architecture
The second Jingdong architecture core technology is divided into 4 parts, namely system design overview, high availability, high concurrency, and system design practical cases, with a total of 21 chapters:
- Directory overview
- content excerpt
Application level current limiting
application-level caching
Product detail page architecture design principles
- Taobao micro-service architecture in practice
This document has a total of 8 chapters, mainly recording the construction process and specific implementation details of the Taobao Double Eleven snap-up project
- Directory overview
- content excerpt
Operating principle of Dubbo
Cache snapping requests
Distributed payment function
at last
The space limit will not continue to lengthen the space. Friends who need the full version only need to add a small assistant: scan the code below to get it for free~