The general principle of mysqldump and the influence of DDL operation in the backup process of mysqldump

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 ...

Posted by kuri7548 on Mon, 17 Jun 2019 16:55:48 -0700

Deep Understanding of Java Virtual Machines (IV)

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 ...

Posted by jwagner on Sat, 08 Jun 2019 16:28:06 -0700

Flutter Phase 8 - Control Summary

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 ...

Posted by Zpixel on Wed, 05 Jun 2019 09:25:06 -0700

Sets and Intervals of Kotlin Advancement

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 ...

Posted by Cerberus_26 on Wed, 22 May 2019 12:42:47 -0700

CopyOnWriteArrayList Source Details

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 ...

Posted by rainerpl on Tue, 21 May 2019 11:45:09 -0700

Graphics of the Development of Dahua Camera java

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 ...

Posted by Hypnos on Sun, 19 May 2019 06:21:56 -0700

Java crawler, implementation of information capture

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 ...

Posted by Plasma on Sat, 18 May 2019 18:34:15 -0700

Deep Understanding of JVM03 - Virtual Machine Performance Monitoring and Fault Handling Tool

"๐Ÿ™Š๐Ÿ™Š๐Ÿ™ŠThis 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 ...

Posted by Swede78 on Fri, 17 May 2019 10:33:40 -0700

Drawing Basic Shape of Android Custom View( V)_Canvas

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 ...

Posted by buckboru on Thu, 16 May 2019 16:20:46 -0700

Introduction to Block Chain: Source Analysis of core-state in ETF (II)

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 ...

Posted by toxic_brain on Sat, 11 May 2019 12:11:24 -0700