Foreword:
Most people's Java development begins with concurrency. After learning concurrency, they feel like they have come into contact with a new world. When you look at the source code of the framework yourself, it will no longer be so difficult.
In recent years, in interviews with major manufacturers, high concurrency not only accounts for a large proportion, but is no longer limited to the use of concurrency tools, and more deeply goes into the underlying layer implementation principles. This can test the internal skills of potential programmers and see whether they can Know why.
Compared with a single-core environment, the I/O of the system in a multi-core environment becomes more complicated. For a homogeneous multi-core environment, each processor core has an equal status in the system and has the possibility of independent I/O operations. This makes the system, especially the operating system, must provide corresponding scheduling and management technical support. The importance of concurrency is self-evident. Especially if money is involved in the design, those who have done development have experience that the design of this kind of module will usually be knocked down several times and the code modified countless times.
Although it is said that the interview is about building rockets, the work is about tightening screws. But we also need to look at how we tighten the screws, right? If you want to improve, you naturally need to continue to learn and master deeper learning content.
I have provided a mind map overview of the learning content. You can review and verify your learning results based on the mind map.
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1. Mind map:
Challenges of concurrent programming:
The underlying and implementation principles of the concurrency mechanism:
Java memory model:
Concurrency basics:
Locks in Java:
Concurrency containers and frameworks:
Thread pool provided by JDK:
2. Catalog overview:
The following is an overview of the directory of the book. You can check to see if you have mastered the following contents.
3. Content excerpts:
Chapter 3: CAS Principle and JUC Atomic Class
Chapter 6: Core principles of abstract synchronizer:
Due to the limited length of the article, it can only be displayed in the form of screenshots. Friends who need learning materials can obtain relevant information below ↓↓↓Business Card