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Continue with synchronized, last article What's the difference between having synchronized or not? We have learned that synchronized is used when multiple threads compete for the same resource concurrently. In this article, we will learn what is locked by synchronized as a pessimistic lock? Lock instance object In the last article, we have cod ...

A summary of three methods of grey level publishing implemented by Nginx The main principle of gray-scale publishing is access routing control, and the key point is to ensure that each access is the same node. Mode 1: adjust the load balance weight Load balancing is based on the existing network structure, which provides a ...

Preface Preceding text [from getting started to giving up - Kubernetes] getting started with Kubernetes - expanding and shrinking stateless applications In, we learned how to deploy a stateless application through yaml file and expand and shrink it. For stateless applications, in case of failure or pod deletion, relevant resources will be relea ...

Logical Structure of Database Cluster Database Cluster -- database cluster, which is a collection of a group of databases rather than multiple database servers Database -- database, a collection of database objects Database object -- database object, a data structure used to store query data Database cluster > Database > database ...

The full name of aac is Android architecture components. Google recently released an official version and was immediately attracted by it. Isn't that the magic medicine to improve the traditional MVP? To add dependency, we will not repeat it. For many examples on the Internet, this article just encapsulates ViewModel and LiveData! 1. Creat ...

Java--Socket Programming TCP communication Blog description The information involved in this article comes from Internet collation and personal summary, which means personal learning and experience summary. If there is any infringement, please contact me to delete, thank you! Explain TCP communication can realize data interaction between two ...

1, Network communication protocol 1. Concept:         Through computer network, multiple computers can be connected. Computers in the same network need to abide by certain rules when connecting and communicating. In computer network, these rules of connection and communication are called network communicati ...

Last time we added an add? Layer function, this time we will create a neural network to predict / fit the corresponding data. Let's create the following virtual data, which is conic data, but at the same time, some noise is added, and the image is: The corresponding code to create these forged data is: import numpy as np # Create a column (equi ...

Occasionally in development, when it is necessary to generate a unique id, such as adding, deleting or modifying any item of the array many times, it is necessary to add a unique identifier to each item to distinguish. The following are various methods of generating unique identification collected from the network, which are summarized here for ...

Preface In the previous article, I have described some contents of docker's entry level. This article begins to explain other contents of docker in depth. First, it will talk about the principle and practical operation of the discovery and automatic update part of docker container service. Talk about the concept and advantages (just look at t ...