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Chapter 14 of SpringCloud Alibaba, upgrade, distributed transaction solution, Seata 1, Overview of distributed transactions 1. What is distributed transaction With the rapid development of the Internet, the software system has changed from the original single application to the distributed application. The distributed system will split an appli ...

API is a good choice when using cross platform applications. In addition to the website, your product may also have Android and iOS applications. In this case, the API is just as good because you can write different front ends without changing any back-end code. When using the API, just click GET, POST or other types of requests with some param ...

1, Simple entry level tree menu implementation (pure background logic) 1. Introduction (1) Development environment　　IDEA + JDK1.8 + mysql 1.8　　SpringBoot 2.2.6 + mybatis-plusHere, it is only developed in the background (json data is returned), which will be explained in the subsequent presentation of the front page. (2) Data sheetAs follows ...

Before To turntable net By the time, I had published the non full-text search code, and the friends in need wanted to be able to read my blog. This paper mainly discusses how to do full-text search, because I spent a long time to design a new work: viewpoint , the point of view still has a high demand for full-text search, so I spent a lot of t ...

This article comes from  codeday  By codeday I am trying to get the log data from the table. I choose the place of time span ("maandag" to "vrijdag"). This can get the result I want, but now I get the problem that only three measurements are displayed every day The first one is the first one after 8 o'clock ...

Author: Tian Jie It's not uncommon for a long query execution time to cause an application aware "jam" in the daily support and use of the database, but the SQL execution "jam" caused by the time zone setting is still an interesting phenomenon, which has not been specifically concerned before. This customer's meticulous and ...

1. Words written in the front I still want to learn Python well. I have learned the basic grammar part for a long time. With a little penetration of the application part, I can go to data analysis, crawler, web, machine learning and other aspects, and have a long way to go.OK, no more nonsense, start programming. 2. Build project structure F ...

1 Requirements One of the functions in my front-end and back-end separated lab management project is student status statistics.My design is to calculate the proportion of each state by day.For ease of calculation, at 0 o'clock a day, the system needs to reset the student's status and insert a piece of data as the start of the day.In addition, c ...

I've been working on sqlite and python recently After referring to the tutorials on the Internet Combined with the previous java jdbc database tool classes, write the following python connection sqlite tool classes The main reason for this is to keep a java like Object args dynamic parameter writing method is compati ...

Recently, there is a requirement in developing projects. The strings of XML messages queried from the database need to be parsed with parameters, which supports modification on the page. Therefore, the function of parsing XML text using JavaScript is born. The specific idea is to get the DOM object of XML, and then through traversal and recur ...