Programming VIP

background Take you to understand the thread state in Java, with pictures and code display, all dry goods. summary Look at the State enumeration in the Thread class, which is the State of the Java Thread. There are many states on the Internet. You can see that this enumeration is more authoritative. All kinds of nouns, what can be run, ready ...

1, Current limiting algorithm In high concurrency systems, there are three sharp tools to protect the system: caching, degradation and current limiting. This paper mainly introduces current limiting. There are three current limiting algorithms: 1. Counter algorithm Fixed windowsliding window 2. Token bucket algorithm3. Leaky bucket ...

User login authentication is a very common business in Web applications. The general process is as follows: The client sends the user name and password to the serverAfter the server-side verification is passed, save relevant data in the current session, such as login time, login IP, etc.The server returns a session to the client_ ID, which the ...

There are three ways to stop threads in Java:Customize the interrupt identifier to stop the thread.Use the thread interrupt method interrupt to stop the thread.Use stop to stop the thread.The stop method is an expiration method modified by @ Deprecated, that is, it is not recommended to use. Because the stop method will directly stop the thread ...

After understanding the basic principle of the above Environment, how to load the configuration from the remote server into the Spring Environment.NacosPropertySourceLocatorFollowing the above analysis ideas, we naturally went to find the implementation class of PropertySourceLocator and found that in addition to our customized GpJsonPropertySo ...

catalogue 1, Basic usage of method 🚆 What is the method ⭐ Significance of the method 🍉 Definition method 🍉 Execution procedure of method call 🍉 Relationship between argument and formal parameter 🍉 Method with no return value 2, Overloading of methods 🍉 Overload problems to be solved 🍉 Use method overload 🍉 Overloaded ru ...

Gets the attribute structure and its internal structure of the runtime class The internal structure of the attribute structure we are talking about here is the permission modifier of the attribute, the data type of the attribute, the name of the variable, and so on. There are two ways to get the attribute structure of a runtime class: getFi ...

Basic concept: when multiple classes have the same characteristic behavior, we can extract the same content from these classes to form a public class, and then derive a new class from the public class. The new class can inherit the data properties and behavior of the existing class and expand new capabilities. java uses the extends keyword to ...

Problem description Because spring boot usually simplifies the configuration and feels a little handmade, I handwritten JDBC and Mybatis in Mybatis class today. At the same time, there were several problems, which are recorded here. 0x01 JDBC insert Chinese garbled code The code is as follows The characters are still normal when the con ...

java learning notes (7) Start learning java and form the habit of blogging. I hope I can stick to it. Small partners with similar interests can learn together java Foundation 22, Array Definition of array An array is an ordered collection of data of the same typeArray describes several data of the same type, which are arranged and combined ...