Two years of development experience combing -- interview questions summary post

[Foreword]
Summary of JAVA development in the past two years, common Java interview questions, know ourselves and others, and find a good job (do not want to outsource).
[Composition]
1. The basic data structure of JAVA: including int String map list generic source code and its
conversion
AOP principle source code SpringMVC distribution request Mybatis-like ORM framework principle: encapsulating JDBC connection pool splicing sql log4j and level configuration printing MAVEN dependency control and packaging Similarities and differences between Git and SVN: commit, branch, merge branch, ant script, SpringBoot2.0 integration
4. Distributed And big data: hadoop storage HDFS query calculation sql version Hive memory version spark KV non-relational library redis MongoDB access collaborative ZooKeeper scheduling Yarn MOOC Just write the project according to the completion of the project, understand the core
5. High concurrency and multi-threading: principle: the same High code and issue thread security synchronous asynchronous lock expansion cache message queue service downgrade circuit breaker sub-database sub-
table Edit the group permission task port to view grep
[Principle]
The knowledge points are related to the actual work. There is something in the words.
[Basic data structure application conversion principle source code]
[Advanced knowledge points]