Programmer Think

First of all, consider using cache for processing. If the cache is not enough, then use read-write separation for implementation application.yml configures two data sources #Default usage configuration spring: profiles: active: dev --- #Development and configuration spring: profiles: dev datasource: master: jdbc-url: jdbc: ...

1. Startup is the way to create bean s pom.xml <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.10</version> </dependency> <!-- maven Not in the warehouse oracle Database driver, here jar Put it under the project for i ...

This paper is based on Spring Cloud Fincheley SR4, Arthas 3.1.4 Recently, it is found that the service returns slowly, and feign's fallback is triggered. Check the log and find that the retry is triggered. What triggered the retry is found through the exception stack: Caused by: feign.RetryableException: connect timed out executing GET http:/ ...

Spring configures multiple data sources configuration file The first configuration class The second configuration class Catalog display Explanatory notes configuration file spring: datasource: master: driver-class-name: com.mysql.jdbc.Driver url: jdbc:mysql: username: ...

JDBC Connection Pool Technology and Druid Because database connection is a kind of resource, it must be created before use, and this process has time and space overhead. If the connection is created every time when database access is executed, and the connection is closed after use, this process is ...

Configuration of Data Connection Pool in SpringBook (tomcat,HikariCP,dbcp2,druid) Articles Catalogue Configuration of Data Connection Pool in SpringBook (tomcat,HikariCP,dbcp2,druid) 1. Four connection pools supported in spring boot 2. Configur ...

rely on Be careful The database connection pool is used here, the Druid is used here, and the Druid is used here is com.alibaba.druid-spring-boot-starter. The starter is provided by a third party. The names of MyBatis and Druid depend on are different from those of other libraries, but the mysql it supp ...

As business changes/requirements change, Java EE applications will be forced to connect multiple data sources for business processing. How to dynamically switch data sources in the most elegant/concise way without affecting the original project structure? In this paper, the dynamic switching practice after adding data sources once is taken as ...

I. Development Environment 1. windows 7 Enterprise Edition 2,Eclipse IDE for Enterprise Java Developers  Version: 2019-03 (4.11.0) 3,JDK 1.8 4,Maven 3.5.2 5,MariaDB 6,Tomcat 8.5 II. Basic Configuration 1. The settings of Maven in Eclipse are as follows 2. The database uses the default test library to create table categories 1 CREA ...