Tag：data source
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Time：2021-7-31
1、 Background Many times, our system often uses MySQL database, but suddenly we need to use Oracle database. At this time, we should consider making the system compatible with a variety of databases. 2、 Steps 1. Configure the corresponding data source in the configuration file or the service configuration file corresponding to the configuration center. […]
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Time：2021-7-29
1、 BackgroundWhen the application system connects to the Oracle database, the author needs to use English uniformly. The configuration cannot be modified on the database server side, because some methods need to be found on the application system side.2、 SolutionAfter consulting the data source and mybatis related source code, there are two ways to support […]
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Time：2021-7-29
Operation and maintenanceMonitoring toolsTens of millions, only open source solutions have traffic monitoring (MRTG, cacti, smokeping, graphite, etc.) and performance alarm (Nagios, ZABBIX, zenoss core, ganglia, opentsdb, etc.).Interview force series ｜ this article makes operation and maintenance monitoring no longer your weakness! And each software has its own characteristics and functions, their focus and objectives […]
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Time：2021-7-26
Enhancer form is a powerful form component contributed by Wuyuan company. Is the world the strongest? Has the final say: Practical demonstration https://www.bilibili.com/video/BV1uK4y1g7EL course 1. Arbitrary layout 2. Enter the domain type 3. Enter the domain binding option data source 4. Form binding data source 5. Form verification 6. Enter a field binding variable or […]
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Time：2021-7-26
As a data visualization software, users use the Chinese version of redash more to find and analyze the data source without editing and changing the data content. When establishing the data source, configuring a database user with permission control can better ensure data security and avoid data loss caused by user misoperation. Next, take the […]
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Time：2021-7-23
First look at the effect: The data model here has two layers: each group of cars is a layer model, and each line of car brands in each group is also a layer model. (1) Let’s create a wscars model first. stayWSCars.hMedium: #import <Foundation/Foundation.h> @interface WSCars : NSObject @property(nonatomic,copy) NSString *icon; @property(nonatomic,copy) NSString *name; +(WSCars […]
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Time：2021-7-21
order This paper briefly introduces the join operation of Kafka streams join A join operation merges two streams based on the keys of their data records, and yields a new stream. A join over record streams usually needs to be performed on a windowing basis because otherwise the number of records that must be maintained […]
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Time：2021-7-21
As a very popular event, I believe everyone has noticed the 11.11 cloud Carnival of Huawei cloud recently. Those who haven’t seen it will go to see it right awayhttp://t.cn/A6G4vI9I, there are many special offers and discounts in it!!!! Xiaobian was also surprised to find that Huawei cloud big data 1 yuan purchase special show, […]
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Time：2021-7-17
Recently, I plan to learn something about data analysis. In the figure below, although there are a lot of advertising elements, there are many techniques. It is said that programmers should have a little product thinking and be sensitive to data. After reading the introduction of some training institutions, there are many knowledge points involved, […]
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Time：2021-7-16
There are several systems in the team with large amount of data, and the number of them increases by tens of thousands every day. There is a system that needs to read the database regularly every day and calculate the relevant business logic, so as to obtain the latest user information. The whole time of […]
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Time：2021-7-16
Recently, I plan to learn something about data analysis. In the figure below, although there are a lot of advertising elements, there are many techniques. It is said that programmers should have a little product thinking and be sensitive to data. After reading the introduction of some training institutions, there are many knowledge points involved, […]
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Time：2021-7-9
#Preface: Mybatis is popular in persistence layer framework. Most projects are based on SSM. Although mybatis can directly operate the database in XML through SQL statements, it is very flexible. However, it is very troublesome to write a large number of XML files because all operations are carried out through SQL statements. Mybatis plus is […]
