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preface There are two configuration injections in the configuration center, one is before startup, and the other is dynamic configuration after configuration changes. This article mainly summarizes the pre startup configuration injection spring environment. Pre knowledge spring configuration will store the configuration in the PropertySo ...

SQL injection concept Basic concepts of database Related terms data Data refers to the symbols that record and identify objective events. It is the physical symbols or a combination of these physical symbols that record the nature, state and relationship of objective things. It is a recognizable and abstract symbol. See for details Baidu ...

(recently, I was studying the book introduction to algorithms. Before, I liked to write notes by hand, but then I found that I always lost my notes, so I planned to make an electronic version of notes)   (in addition, pseudo code is used in the book, and python code is used in the notes if you need to try.) 2.1 insert sort     &nb ...

03-PDI(Kettle) import and export CDC Full, incremental and differential backup of data Reference blog: https://blog.csdn.net/qq_38097573/article/details/103593150 Far away, far away, there is a cashier. He has to write down a lot of bills every day. The old man was cautious all his life. In order to ensure the safety of the account book, ...

This article is reproduced from the official account of "good future technology". The use of Flink CDC 2 is introduced in the case of Flink SQL, and the core design of CDC is interpreted. The main contents are as follows:caseCore designCode explanationIn August, Flink CDC released version 2.0.0. Compared with version 1.0, it supports ...

reference resources TCP/IP network programming Yin Shengyu Multicast and broadcasting Multicast Multicast data transmission is based on UDP. The difference from the implementation of UDP server / client is that UDP data is transmitted to a single target, while multicast data is transmitted to a large number of hosts joining (registering) a ...

Reference link: mainly based on the Chinese version of scikit learn (sklearn) official documents: https://sklearn.apachecn.org/#/ 7 text feature extraction methods: http://blog.sina.com.cn/s/blog_b8effd230102zu8f.html Train of sklearn_ test_ Explanation of the meaning of the parameters of split() function (very complete): https://www.cnblogs.co ...

php basic syntax The php script executes on the server and sends the pure HTML results back to the browser Basic grammar Beginning and end <?php ?> The file extension is. php Each line of code must end with a semicolon php output echo and print, which can contain HTML tags echo: you can output one or more strings print: only one ...

Go operation Mysql database There is a database/sql package in go, which defines the methods of connecting and operating the database, And the native supports connection pool, which is concurrent and safe. This standard library has no specific implementation, but lists the specific contents that need to be implemented by a third-party libra ...

This article is for those who have deeply understood the mathematical principles and operation process of RNN, LSTM and GRU. If they do not understand its basic idea and process, it may not be very simple to understand. 1, Let's start with an example This is an example on the official website. Taking LSTM as an example this tim ...