Alibaba's internal "100 billion level concurrent system architecture design notes" are all inclusive, too comprehensive

Write it at the front

The recruitment season is coming , I wonder if you have found one thing , Now, no matter it's a big Internet company , Or start-ups , Those interviewers always like to talk to you with high concurrence .

Even if , The business volume of their company is only tens of thousands QPS,

But I just want to test you with this , See if your foundation is solid .

In the present day IT The world, especially programmers , If you haven't contacted and understood high concurrency, it's a little too ignorant , As an excellent programmer , High concurrency system architecture designers must master . It's simple , Now most Internet companies will use high concurrency system architecture design . Like the common " Seckill activity "、" Grab a red envelope "、" Microblog hot search "、"12306 Grab tickets "、" Bike sharing brings new life " And so on are typical business scenarios with high concurrency , Programmers who can solve these common businesses are good hands in the company , Not to mention the extra annual salary 30W That's right .

Common high concurrency scenarios are ：

Ticket grabbing on holidays 、 Weibo explodes 、 E-commerce double 11 etc.

, As the business grows , These concurrency scenarios gradually appear .

High concurrency architecture is not a genius's meditation or inspiration , This process evolves with the development of business , Use a metaphor , First came the famous autumn mountains , I just got to the old driver .

High concurrency architecture is an evolving process , Rome wasn't built in a day , The Great Wall is not built in a day  , Build a good infrastructure for future expansion , That's important .

Nowadays, most Internet company interviews will ask you about your three high architecture , If you can't grasp it , That basically can't get a high salary .

A lot of people ask me ：

I have no contact with high concurrency projects in my usual work , How can I improve myself ？

Don't panic , today LZ Just give it to me privately from a brother Ali some time ago

《 100 billion level concurrent system architecture design notes 》

Share it with you , Next time at the interview , I'm no longer afraid of being made difficult by the interviewer ！

《 100 billion level concurrent system architecture design notes 》

explain ： The article is limited to length , So only part of the show , complete 《 100 billion level concurrent system architecture design notes 》 file LZ It has been sorted out , Friends who are learning high concurrency or want to review this document as an exercise 《 100 billion level concurrent system architecture design notes 》.

A list of notes

The basic chapter

Database section

Cache

Message queuing

Distributed services

Maintenance

Actual combat

Excerpts from the content

What is layered architecture

Performance optimization under high concurrency

The idea of high availability system design

How to make cache highly available ?

The principle of microservice splitting

Fixed window and sliding window algorithm

50 ten thousand QPS How to design the unread system ?

Ps： Due to space limitation , The notes can't be fully displayed for everyone , Here is a screenshot of the main content for your reference .

Learn how to say

Let's build an intuitive understanding of high concurrency system design , And then gradually evolve to support millions with the simplest architecture 、 Ten million concurrent distributed architecture as a case , Take you to solve the pain points in the process , Improve business processing capacity , Really complete a system evolution , Finally, the overall design idea is optimized combined with actual combat ！