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What is a transaction? Transaction is to treat a series of actions as an independent unit of work, which are either completed or ineffective. Attribute ACID of transaction: 1. Atomicity: a transaction is an atomic operation consisting of a series of actions. The atomicity of a transaction ensures that the actions are either completed or inef ...

brief introduction The remoting module of RocketMQ is the basis of communication among RocketMQ client, consumer, NameServer and Broker. It is implemented through the netty framework. The inheritance structure of the core class is as follows: The RemotingService interface defines the start(), shutdown(), registerRPCHook() methods. The re ...

Effect video Jump to Baidu map for route calculation and navigation Route calculation and navigation in APP Function realization Jump mode implementation Function Description: by initializing Baidu map API, obtain the longitude and latitude of the current position as the starting point, and the entered address as the destination, t ...

Content index of this article: 1.Bean Underlying principles of life cycle 2.Underlying principle of dependency injection 3.Initialize underlying principles 4.Inferential construction method and underlying principle 5.AOP Underlying principle 6.Spring Transaction underlying principle However, they are only general processes. In the follow-up, ...

Personal blog original link Java access rights (class, interface, internal class, internal interface) ref: Rookie tutorial - java TutorialJava programming ideas [by Bruce Eckel] Access modifier Some types can only use partial access modifiers and have default modifiers public, all classes are visible private, the current class is ...

Automatic configuration of MockMvc As mentioned above, @ AutoConfigureMockMvc provides the function of automatically configuring MockMvc and instantiating the function of MockMvc The specific code is in Within the MockMvcAutoConfiguration autoconfiguration class in the spring boot test autoconfiguration project. The effectiveness of this auto ...

LeetCode problem solution - dynamic programming - subsequence problem Reference: labuladong WeChat official account, hand handle brush, dynamic programming series, official account, excellent public address, recommended to everyone. In this paper, we will pick up the routine of sub sequence problem. In fact, there are two kinds of templ ...

All paths of binary tree Given a binary tree, return all the paths from the root node to the leaf node. Note: leaf nodes refer to nodes without child nodes. 1. Method 1: the temporary path is stored in String class Solution { List<String> res = new ArrayList<String>(); public List<String> binaryTreePaths(TreeNode r ...

Pull hook education PC Station - micro service version - Lao sun 1. Review microservices 1. General Let's first look at how micro services are described in Martin Fowler's paper Microservice is an architecture mode or architecture style. It advocates dividing a single application into a group of small services. Each service runs in its ow ...

First, you need to know some definitions of inheritance. Briefly, but be sure to remember: In the concept of inheritance, there are subclasses and superclasses. The superclass is also called superclass or base class, and the subclass is also called derived class (don't change the word to be silly)Inheritance is for subclass objects to have the ...