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.
Don’t ask, I don’t know, but when I asked, I was surprised that the transcoding Java players on my body have been looking for internships one after another since February, and I have interviewed a lot of daily life and summer vacations, and I feel numb during the summer vacation. After reading the face-to-face scriptures for a while, reviewing the basic knowledge, I started to submit my resume. Xiaohongshu was the first to give him an interview opportunity, but after three interviews, for a whole month and a half, he didn't get a single offer!
I memorized stereotyped essays, but I didn’t expect the interviewer to go directly to Java performance optimization instead of playing cards according to the routine
As follows:
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!
Ali 2023 version Java performance optimization actual combat
The document covers Java programming, multi-threading, JVM, design pattern, database, and actual combat, covering the overall Java performance optimization
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
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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
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Service Layer Caching Technology
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Alibaba Double Eleven snap-up business process
How to implement the push mode of the general information flow system?
Counting system design (2): How to design a non-counting system at 500,000 QPS?
How to design a counting system that supports high concurrency
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