Two days ago, I saw a question and answer on Zhihu, which said:
What kind of qualities and abilities does a Java programmer have to be called a senior engineer?
This question also triggered some of my thinking. Many people may say, "As a senior engineer, you must have a solid foundation, be proficient in a programming language, have at least read the source code of an excellent open source project, and have high concurrency/performance. Optimized work experience, strong communication skills, etc.”
All of the above are correct, and these knowledge points are also the test points in the interview. More than one fan in the background has given me feedback that during the interview, the interviewer is often asked if he has experience in high concurrency and performance tuning.
But the status quo of most people is: Although they have seen the relevant knowledge of high-concurrency performance optimization, because the company’s projects are too small or their own capabilities are poor, they are usually only responsible for CRUD in the company, and they have no access to large concurrency. As for the tuning problem, the working years have increased over time, but I don’t have any practical experience in high-concurrency performance tuning. In the end, when I was asked about this aspect in the interview, I could only hesitate and memorize a few stereotyped essays, which greatly affected myself. job hunting.
So how to learn high concurrency and performance tuning related knowledge?
About how to learn high concurrency, I wrote an article on April 8th. If you are interested, you can follow me and go to my homepage to view it. Today we mainly talk about how the company's projects are not good, the technology is poor, and Java programmers who usually have no access to performance optimization can learn system performance optimization? How to put performance optimization experience on your resume? how? The best way is of course to stand on the shoulders of giants to learn. If you plan to learn Java performance optimization in the near future but don’t know how to start, you can take a good look at this booklet of Java performance optimization that LZ often reads and Alibaba’s latest performance Optimize the record.
Java performance optimization full solution brochure
There are 11 chapters in the booklet, which are divided into 5 parts, namely 1-5, 6-7, 8, 9, 10-11. Due to space limitations, only the main content will be screenshotted below, and the full version is required at the end of the article.
- Directory overview
- first part
- the second part
- the third part
- fourth part
- the fifth part
Alibaba Java Performance Optimization Booklet (2023 Edition)
- Directory overview
- content excerpt
Tuning in practice
- How to design a better distributed lock?
- Distributed transaction optimization of e-commerce system
- How to use caching to optimize system performance?
- Remember a double ten - snap-buying performance bottleneck tuning
at last
Due to the space limit, it is impossible to display all the contents of the two booklets. You need the full version of the small partner-add assistant-ikt4435 to get it for free