Last month, a big boss came to the company. Within a week of joining the company, he optimized the performance of the company's existing projects, which directly saved the company half of the cost.
After asking about the situation, I realized that this man was also abused along the way. I was laid off at the end of last year. I thought my skills were not bad. After reading the interview for a while and reviewing the basic knowledge, I started to apply for resumes from major companies. Ali was the first to give him an interview opportunity, but he failed to survive three times, and then various companies, large and small, were crushed in the actual interview. For a whole month and a half, I didn't get a single offer, and finally joined our company after targeted supplementary supplements.
Speaking of this, many fans have recently reported to me that before the interview, they felt that their usual skills were not bad, and they had memorized stereotyped essays, which was completely sufficient. Unexpectedly, the interviewer did not follow the routine and went directly to Java performance optimization, concurrent The bottom-level related interview questions are as follows (summary of collection of fan contributions):
How about it? Are you dumbfounded? This kind of performance problem is not something that we can know the solution by reading blogs or books. It requires a lot of actual combat experience to be able to chat with the interview with ease during the interview. If the scale of your system is not large, it is difficult to come into contact with similar problems, and you want to pass the interview of the current Internet company: If there is a small partner who needs the full version: like + forward, follow me [click the business card at the end of the article] then Available~
Standing on the shoulders of giants is what you should do right now
Taking this opportunity, LZ shared the Ali Java performance optimization [2023 version] bought from an old brother of Ali a few days ago, and shared it for your reference! After thoroughly understanding everything, I believe that you can solve Java performance problems independently whether you encounter Java performance problems in interviews or work!
Ali 2023 version Java performance optimization actual combat
The document covers Java programming, multi-threading, JVM, design pattern, database, and actual combat. It can be said that it covers all aspects of Java performance optimization. Let’s look down:
Overview of Performance Tuning
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What reference factors can reflect the performance of the system?
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How to develop a performance tuning strategy?
Five directions of performance tuning
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Java Programming
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Multithreading
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JVM articles
Design Patterns
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Database
Performance optimization in practice
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Database implements distributed lock
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E-commerce system distributed transaction solution
Service layer caching technology
Alibaba Double Eleven snap-up business process
at last
The length limit will not continue to lengthen the length and affect everyone's reading experience. If there is a small partner who needs the full version: like + forward, follow me and [click the business card below] to get it~