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The general principle of mysqldump and the influence of DDL operation in the backup process of mysqldumpThe general principle of mysqldumpThe first caseThe second case The general principle of mysqldump and the influence of DDL operation in the backup process of mysqldump MySQL Version: 5.7.18 Isolation level: REPEATABLE-READ If th ...

Detailed Description of Virtual Machine Performance Monitoring and Fault Handling Tools 4.1 Overview This article refers to Chapter IV of Zhou Zhiming's "Deep Understanding of Java Virtual Machine", in order to sort out ideas, simply record it for later reference. JDK itself provides a lot of convenient monitoring tools for JVM perfor ...

Recently written front-end, not summarizing flutter's learning process, now summarize, about animation, layout, login, home page, routing, json formatting, drop-down refresh, picture loading preview, welcome page, focus question, live, upload pictures, page information transfer, these knowledge points.Because the official documents give few po ...

aggregate Unlike most languages, Kotlin distinguishes between variable and immutable sets (list, sets, maps, etc.). Precise control over when collections can be edited helps reduce BUG and well-designed API s. Before that, it is necessary to understand the difference between read-only variable sets and actual invariant sets. Both ...

1. Overview of CopyOnWriteArrayList CopyOnWriteArrayList is a thread-safe collection that stores elements internally through an array. From the name, it can be seen that this is a List of "Write-Time Replication". Every time the List is modified, a new array will be created. copy the original array elements to the new array, and mod ...

Graphics of the Development of Dahua Camera java Following the last project of Hai Kang, this month began the two development of Dahua webcam. 1. First of all, the emo downloaded from the official website, which is only written in C, let me understand how to read a java development, this aspect is a little worse than ...

For reprint, please indicate the source: http://blog.csdn.net/lmj623565791/article/details/23272657 Today, the company has a need to do some data grabbing after the specified website query, so it took some time to write a demo for demonstration. The idea is simple: you access links through Java, get html strings, and then parse links an ...

"🙊🙊🙊This tutorial is experimental and unsupported." Classic Answer to Last Homework Question: What are the common garbage collectors in Java? In fact, Garbage Collector is closely related to specific JVM implementations. Different vendors (IBM, Oracle) and different versions of JVM offer different choices. Next, let me talk ab ...

In this article, we will introduce the use of Canvas. Introduction to Canvas Canvas, which we can call canvas, can draw all kinds of things on it. It's the foundation of 2D graphics rendering on Android platform. It's very powerful. Generally speaking, there are two main characteristics of the more basic things: 1. Stron ...

In the second half of 2018, the block chain industry is gradually fading away from the impetuosity and rationality at the beginning of its development. On the surface, it seems that the demand and status of relevant talents are declining. But in fact, it is the gradual decline of the initial bubble that gives people more attention to the real t ...