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preface Better manage the connection with the database, avoid memory leakage and server crash due to too many connections, and reduce resource consumption. 1, Database connection pool 1. The necessity of JDBC database connection pool When developing web programs based on database, the traditional mode basically follows the followi ...

MongoDB is the most popular NoSQL database, and SpringBoot is a best practice for using Spring. Today, let's talk about the two ways SpringBoot integrates MongoDB. The installation of MongoDB can be queried on the official website. The most convenient way for local development is to use Docker. 1, Preparatory work 1. Engineering generation ...

Catalog 1 Initialize DruidXADataSource 2 Initialize Atomikos DataSourceBean 1 Initialize DruidXADataSource Initializing DruidXADataSource is done by the application developer as follows: /** * jdbc.ds1 Get configuration information, initialize druidDataSource1 * @return */ @Bean(name="druidDataSource1") @Configurati ...

Java--JDBC database connection pool Blog description The information involved in this article comes from Internet collation and personal summary, which means personal learning and experience summary. If there is any infringement, please contact me to delete, thank you! concept In fact, it is a container (Collection) for database connection. A ...

Java--JDBC database connection pool Blog description The information involved in this article comes from Internet collation and personal summary, which means personal learning and experience summary. If there is any infringement, please contact me to delete, thank you! concept In fact, it is a container (Collection) for database connection. A ...

​ In this chapter, we started to formally build a big data environment, with the goal of building a stable big data environment that can be operated and monitored. We will use Ambari to build the underlying Hadoop environment, and use the native way to build Flink, Druid, Superset and other real-time computing environments. Use the combinatio ...

The last article describes the idea of permission control implemented by matrix web as a whole. Let's review: First of all, the user needs to log in and fill in the user name and password. The backend receives the login request and verifies the user and password. After the verification is successful, the Token is generated according to the u ...

Preface Recently, I have used Spring Boot with MyBatis, general Mapper plug-in and PageHelper paging plug-in to do several small and medium-sized API projects. I feel that it is very comfortable to develop this project with this set of framework and tools, and the team's response is also good. In the process of project construction and develop ...

The for loop has been used for single insertion before. When the traffic volume increases to tens of thousands, a Connection is null error will be reported. This is the first time I have encountered this business scenario. Record the following. If I know more, I will continue to update this article. Combined posts: ...

Time record April 21, 2020 Preface       At present, the project reconstruction adopts springboot2.1.13 to integrate mybatis-plus3.1.2 and druid connection pool 1.1.20. When the response body json result set and the request body json result set are returned in the controller controller controller, both serialization and dese ...