hikaricp

问题 I have a springboot application which connects to a postgres DB.Connection pool used is Hikari. I have a select query running every 5 minutes.Though it gets executed properly most of the times, i encounter a PSQLException intermittently org.postgresql.util.PSQLException: An I/O error occurred while sending to the backend. at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:333) ~[postgresql-42.2.2.jar!/:42.2.2] at org.postgresql.jdbc.PgStatement.executeInternal

问题 I am trying to simulate an scenario where my service loses connection to a database and cannot do an INSERT by blocking the connection with iptables, but I can't make the executeQuery() method to timeout. What I did is setting a timeout for the PreparedStatement like this statement.setQueryTimeout(5) . Here is the code. HikariConfig config = new HikariConfig(); config.setJdbcUrl("jdbc:mysql://db-url/db"); config.setUsername("user"); config.setPassword("passwd"); config.setMaximumPoolSize(10);

问题 I am using hikari cp with spring boot app which has more that 1000 concurrent users. I have set the max pool size- spring.datasource.hikari.maximum-pool-size=300 When i look at the processlist of mysql using show processlist; It shows max 300 which is equal to the pool size.It never increases than max pool.Is this intened? I thought pool size means connections maintained so that the connections can be reused when future requests to the database are required but when need comes more

问题 I am using hikari cp with spring boot app which has more that 1000 concurrent users. I have set the max pool size- spring.datasource.hikari.maximum-pool-size=300 When i look at the processlist of mysql using show processlist; It shows max 300 which is equal to the pool size.It never increases than max pool.Is this intened? I thought pool size means connections maintained so that the connections can be reused when future requests to the database are required but when need comes more

问题 i want to use Hikari CP in my Spring 4.0.3 context but seems i am missing something. My bean configuration looks like: <bean id="dataSource" class="com.zaxxer.hikari.HikariDataSource"> <constructor-arg> <bean class="com.zaxxer.hikari.HikariConfig"> <constructor-arg> <props> <prop key="dataSource.driverClassName">${database.driver}</prop> <prop key="dataSource.jdbcUrl">${database.database.jdbc.url}</prop> <prop key="dataSource.port">${database.port}</prop> <prop key="dataSource.databaseName">$

问题 Looking around for a connection pool solution on App Engine, with Cloud SQL, multiple entries show up with the suggestion that HikariCP should work because it allows for an external ThreadFactory configuration. For example; JDBC connection pool compatible with App Engine Connection pool on app engine with Cloud SQL The configuration would be something like this: import com.google.appengine.api.ThreadManager; ... HikariConfig lConfig = new HikariConfig(); config.setThreadFactory(ThreadManager

问题 I want to configure HinkariCP data source with Spring4 Java config. My config looks like: @Configuration @EnableJpaRepositories("com.app.dao.repository") @EnableTransactionManagement public class DataAccessConfig { private static final String PROPERTY_NAME_HIBERNATE_DIALECT = "hibernate.dialect"; private static final String PROPERTY_NAME_HIBERNATE_FORMAT_SQL = "hibernate.format_sql"; private static final String PROPERTY_NAME_HIBERNATE_SHOW_SQL = "hibernate.show_sql"; private static final

问题 I want to configure HinkariCP data source with Spring4 Java config. My config looks like: @Configuration @EnableJpaRepositories("com.app.dao.repository") @EnableTransactionManagement public class DataAccessConfig { private static final String PROPERTY_NAME_HIBERNATE_DIALECT = "hibernate.dialect"; private static final String PROPERTY_NAME_HIBERNATE_FORMAT_SQL = "hibernate.format_sql"; private static final String PROPERTY_NAME_HIBERNATE_SHOW_SQL = "hibernate.show_sql"; private static final

问题 I have recently configured my application to use Spring Cloud Config with Github as a configuration repository. Spring Boot - 2.1.1.RELEASE Spring Cloud Dependencies - Greenwich.RC2 My application is using pretty much everything out of the box. I have just configured the database in application.yml and I have HikariCP autoconfigurations doing the magic in the background. I am refreshing my applications using this job that calls refresh() method on the RefreshEndpoint. import org.slf4j.Logger;

问题 Why does Spring Batch use 1 database connection for each thread? Stack: Java 8 Spring Boot 1.5 Spring Batch 3.0.7 HikariCP 2.7.6 DataSource config: batcdb (postgres) readdb (oracle) writedb (postgres) Each datasource is using HikariCP with default 10 connections each. Spring Batch config: ThreadExecutor-1: core-pool-size: 10 max-pool-size: 10 throttle-limit: 10 Job-1 Config / ThreadPoolTaskExecutor: (pool sizes and throttle limit set via application.yml) @Bean public Step job1Step() { return