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This article introduces the relevant knowledge of "what are the knowledge points that must be broken through in advanced Java". In the operation of actual cases, many people will encounter such a dilemma. Next, let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

1. Java basic technology system, JVM memory allocation, garbage collection, class loading mechanism, performance optimization, reflection mechanism, multithreading, network programming, common data structures and related algorithms.

2. Have a clear understanding of object-oriented software development ideas and be familiar with common design patterns.

3, proficient in the current popular open source framework (spring/springmvc/ibatis), and have a certain understanding of its core ideas and implementation principles.

4. Be familiar with the development and design of database such as Oracle and MySQL, as well as the design and development of cache system Redis or Memcached.

5. Familiar with underlying middleware, distributed technology (including cache, message system, hot deployment), message middleware: ActiveMQ, RabbitMQ, workflow middleware: JBPM.

6. Proficient in shell programming, proficient in awk, sed, grep, strace, tcudump, gdb and other common commands.

7. Experience in design and development of large-scale distributed, high concurrency, high load (large amount of data) and high availability system.

8. Know something about configuration management and agile R & D model (svn,git).

9. Familiar with some common solutions and their principles: single sign-on, distributed cache, SOA, full-text retrieval, message middleware, load balancing, connection pooling, flow computing, etc.

10. Be able to have a general idea of the characteristics and business bottlenecks of the mainstream technologies on the market.

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