2023-04-02 01:34:36
Talk about HashMap, ConcurrentHashMap data structure, the difference between 1.7 and 1.8? Hashmap What will happen if only one writes the other full reads Which Map classes have been used, w...
2023-04-02 01:35:38
Which kernel parameters have you paid attention to under the Linux system, and tell us what you know. There are several IO models under Linux, and what are the meanings of each. What is the...
2023-04-02 01:39:41
What are the database isolation levels, what are their meanings, what is the default isolation level of MYsql, and the advantages and disadvantages of each storage engine Under high concurrency...