I want to use Server Managed connection pool in my web application,Now i'm using JdbcTemplate to get the connection.How to get the datasource from the WebSphere and use in my application.
I googled but got confused with JndiTemplate and JdbcTemplate..
A good guide to Websphere + Spring can be found at Using Spring and Hibernate with WebSphere Application Server
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Does SpringBoot use JNDI for the data base connection (auto configuration) ?
Can you give sample use cases which requires JNDI implementation in Spring Boot Application ?
JNDI is very useful when the servlet container or the application server provides some resources to the application.
The usual example is the datasource. It is useful, because binding the datasource to the JNDI allows you to deploy the same application into different environments without changing any configuration file.
I am using Spring boot + MySQL + Data JPA.
When I started my spring boot app, its taking initial pool size as 10.
I have tried to customize it using following property:
spring.datasource.dbcp2.initial-size=20
But its not working. How to fix this ?
If you don't configure your Connection Pool, Spring Boot will pick HikariCP at default. The connection pool for HikariCP can be configured as following:
spring.datasource.hikari.maximum-pool-size=5
When multiple spring boot applications created and deployed to a tomcat server. Is it possible to use a common connection pooling, datasource instead of providing these details in application.properties file. Or does this already taken care within the spring boot implementation
When you deploy multiple application then each application manages it connection pool.
Spring boot boundary is limited to each application context and it does not know what other application deployed and which db they are using.
I have created a spring boot application that uses spring boot starter data elasticsearch to connect to elasticsearch. I want to configure this application to setup connection pooling. How do I configure the application.properties to support it?
Old answer. Since Boot 2.2, the reactive client doesn't have these options.
From the docs:
spring.data.elasticsearch.properties.*= # Additional properties used to configure the client.
Though it does appear that the default TransportClient does pool connections anyway.
According to the Spring Boot Doc, we are suggested using Tomcat pooling datasource. If I want to deploy my Spring Boot application as a war file to a standard Tomcat server. How to config the pooling datasource? How to make Spring using the datasource which standard Tomcat provided?
Do a standard JNDI lookup and expose the resulting DataSource as a Bean (either via XML or Java Config).
The pooled data source can then be setup any way you like in a element in Tomcat's context.xml