Tag：Bookkeeping
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Time：2021-7-15
What is redo log Redo log (redo log), a metaphor can be used to describe, that is, the hotel manager has a pink board, which is used to record customers’ credit records. If there are not many people on credit, he can write it on the pink board. If there are many people on credit, […]
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Time：2021-4-18
A lot of times, we can always hear the term “hard fork”, which makes people turn pale. However, after bitcoin and Ethereum have experienced a certain number of forks, it does not absolutely affect people’s pursuit of these two mainstream digital currencies. However, not all digital currencies will bifurcate, and even some currencies will hardly […]
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Time：2020-12-20
brief introduction Blockchain is a tamper proof shared digital distributed ledger that records transactions in public or private peer-to-peer networks. Distributed ledgers are distributed to all member nodes in the network. The sequential chain of blocks of encrypted hash links is used to record the history of asset exchange between peers in the network. Blockchain […]
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Time：2020-12-5
This paper was first published inSimple explanation of blockchain communityLink to the original text:How bitcoin mines (mining principle) – proof of workloadThe original text has been updated. Please read it stayBookkeeping principle of blockchainFirst, we learned that bookkeeping is the process of calculating hash package of transaction records, transaction time, account book serial number, last […]
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Time：2020-11-18
With the rapid rise of digital currencies such as bitcoin and Ethereum, the underlying technology of digital currency, blockchain technology, has begun to enter the public’s view. Yao Jinbo said: blockchain may be as great as the Internet. What are the advantages of blockchain technology over traditional Internet technology? What is its implementation principle? I […]
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Time：2020-11-13
The bookkeeping book of springboot Yesterday, I read Rego’s tutorial and wrote a simple bookkeeping book to practice. I didn’t put my notes down on my blog. I made it up today. Let’s get to the point. As the old rule, let’s take a look at the directory structure of the project and the login […]
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Time：2020-10-14
The first twoWechat DIYSeries: Wechat DIY: build wechat chat robot in one hour Wechat public ID DIY: training chat robot & image upload tool This paper introduces how to use the build & train chat robot and how to make the public number support the image upload to qiniu, so as to turn the public […]
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Time：2020-9-20
Docker basic operation guide Pull the basic image: docker pull centos:latest Run a container called base CentOS against the underlying CentOS image docker run –name base-centos -d centos:latest Copy the local JDK to the container docker cp /home/kxvz/jdk-8u201-linux-x64.rpm base-centos:/opt View all containers docker ps -a View all running containers docker ps Stopped containers docker stop […]
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Time：2020-9-19
A simple encryption tool, performance seems to be poor, to be optimized package com.kxvz.common.crypt; import javax.crypto.Cipher; import javax.crypto.KeyGenerator; import javax.crypto.SecretKey; import java.io.ByteArrayOutputStream; import java.security.SecureRandom; import java.util.ArrayList; import java.util.List; import java.util.Random; import java.util.zip.Deflater; import java.util.zip.Inflater; public class Xe { private static final String HEX_NORMAL = “0123456789abcdef”; private static final String HEX_TMP = “0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ”; private static final […]
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Time：2020-8-12
Item 1 – software project of household income and expenditure accounting Project development process description Project requirement description Simulation of home accounting software based on text interface The software can record the family’s income and expenditure, and print the income and expenditure statement Project interface ———————Family income and expenditure accounting software——————— 1. Revenue and expenditure […]
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Time：2020-8-7
On September 16, 51rpa editor shared the article “RPA’s technical expertise”. It was mentioned in the article that in order to be truly independent and write optimized, robust, safe, general and easy to maintain code, RPA developers need to have certain development experience, and professional people are the right way to do professional things. Share […]
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Time：2020-7-20
In fact, the technical status of blockchain is mainly that with the growth of its transaction volume and application, network congestion will occur. However, the existing bottom layer of blockchain is still in the primary development stage, there are many technical bottlenecks, DAPP landing will be very difficult, and TPS will become the bottleneck problem.The […]
