notbjoggisatall / spring-boot-quartz-cluster-environment

Spring Boot integration with Quartz Scheduler in a cluster environment

spring-boot-quartz-cluster-environment

• A demo project to execute jobs in a clustering environment with Quartz Scheduler, based on https://github.com/davidkiss/spring-boot-quartz-demo
• Quartz should be able to load balancing:

"Never run clustering on separate machines, unless their clocks are synchronized using some form of time-sync service (daemon) that runs very regularly (the clocks must be within a second of each other). See http://www.boulder.nist.gov/timefreq/service/its.htm if you are unfamiliar with how to do this." (from documentation)

Stack:

• Spring Boot
• Quartz
• MySQL (try docker: https://hub.docker.com/_/mysql/)

Run

• Apply resources/db/changelog/sql/quartz_tables_mysql.sql to your database
• Run two or more instances:

$ mvn spring-boot:run

Configuration (Optional)

• Quartz: quartz.properties
• Cron strategy: samplejob.frequency=0 * * * * ? (on application.properties)

Quartz documentation

• http://www.quartz-scheduler.org/documentation/quartz-2.x/configuration/ConfigJDBCJobStoreClustering.html