Very slow Spring Boot application startup - spring

Question

I have a simple Spring Boot application that connects to a PostgreSQL database and serves as a JSON service. Somehow the startup has become very slow, see timings 10:37:10 and 10:38:00:
2015-05-09 10:37:09.649 INFO 20880 --- [lication.main()] o.apache.catalina.core.StandardService : Starting service Tomcat
2015-05-09 10:37:09.651 INFO 20880 --- [lication.main()] org.apache.catalina.core.StandardEngine : Starting Servlet Engine: Apache Tomcat/8.0.20
2015-05-09 10:37:09.767 INFO 20880 --- [ost-startStop-1] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2015-05-09 10:37:09.767 INFO 20880 --- [ost-startStop-1] o.s.web.context.ContextLoader : Root WebApplicationContext: initialization completed in 2970 ms
2015-05-09 10:37:09.979 INFO 20880 --- [ost-startStop-1] o.s.b.c.e.ServletRegistrationBean : Mapping servlet: 'dispatcherServlet' to [/]
2015-05-09 10:37:09.985 INFO 20880 --- [ost-startStop-1] o.s.b.c.embedded.FilterRegistrationBean : Mapping filter: 'characterEncodingFilter' to: [/*]
2015-05-09 10:37:10.105 INFO 20880 --- [lication.main()] o.s.j.d.DriverManagerDataSource : Loaded JDBC driver: org.postgresql.Driver
2015-05-09 10:37:10.214 INFO 20880 --- [lication.main()] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2015-05-09 10:37:10.233 INFO 20880 --- [lication.main()] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2015-05-09 10:37:10.585 INFO 20880 --- [lication.main()] org.hibernate.Version : HHH000412: Hibernate Core {4.3.8.Final}
2015-05-09 10:37:10.587 INFO 20880 --- [lication.main()] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2015-05-09 10:37:10.589 INFO 20880 --- [lication.main()] org.hibernate.cfg.Environment : HHH000021: Bytecode provider name : javassist
2015-05-09 10:37:10.968 INFO 20880 --- [lication.main()] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
2015-05-09 10:38:00.023 INFO 20880 --- [lication.main()] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQLDialect
2015-05-09 10:38:00.041 INFO 20880 --- [lication.main()] o.h.e.jdbc.internal.LobCreatorBuilder : HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException
2015-05-09 10:38:00.274 INFO 20880 --- [lication.main()] o.h.h.i.ast.ASTQueryTranslatorFactory : HHH000397: Using ASTQueryTranslatorFactory
Any thoughts? Is there anything I can do to diagnose the problem?

Answer 1

For Spring Boot you can set this in your application.properties file:
spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults=false
I also found that I needed to set another property or I would get the error "org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set". To rectify that I set this property:
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQLDialect
This reduced our startup time from about 100 seconds down to 12.

Answer 2

Problem solved using
properties.setProperty("hibernate.temp.use_jdbc_metadata_defaults", "false");
Thanks all.

Answer 3

Contributing application.yml version of property setting.
spring:
jpa:
properties:
hibernate:
temp:
use_jdbc_metadata_defaults: false

Answer 4

When I point to database in AWS RDS server it takes 78 seconds.
After given this configuration it takes 52 seconds.
spring:
jpa:
properties:
hibernate:
temp:
use_jdbc_metadata_defaults: false
And after given this configuration with the above configuration it takes only 10 seconds.
spring:
jpa:
hibernate:
ddl-auto: none

Answer 5

For dev environment, use the following property
spring.jpa.hibernate.ddl-auto=none
This would be a bit risky for staging and prod environment.

Answer 6

Are you running the tests on a local server? Perhaps there's some problem with the database server URL, such as a non-resolvable hostname or an IPv6 DNS entry, connecting with the same connection string from another application (e.g. http://squirrel-sql.sourceforge.net/) could confirm the problem.
The delay is definitely logged when creating the database connection for the first time (either while loading the driver or performing the connection).

Answer 7

I found the startup takes long time when the db server is far, in my case it won't take time when using the localhost db, and it take about 20 seconds in product enviroment with db is in us and server is in jp.

Answer 8

For springboot data JPA you need to add spring.data.jpa.repositories.bootstrap-mode=lazy in application.properties file this would also reduce bootup time.
spring.data.jpa.repositories.bootstrap-mode=lazy
spring.jpa.hibernate.ddl-auto=none
spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults=false

Answer 9

I used the following piece of code
spring:
jpa:
database-platform: org.hibernate.dialect.PostgreSQLDialect
show-sql: false
generate-ddl: true
**hibernate:
ddl-auto: none
properties:
hibernate.hbm2ddl.auto: none**