Scheduling jobs in Spring with Quartz Clustered mode - PoC

This repository demonstrates how to schedule jobs in Spring Boot application with Quartz Clustered mode.

Features

Retry Pattern With Exponential Back-Off
Quartz Clustered Mode
PostgreSQL DB
Flyway
Docker / Docker Compose

Getting Started

Prerequisites:

Java 11
Docker

Installation

Build docker image

./gradlew bootBuildImage

Usage:

Start services.
```
cd docker
docker compose up -d
```
Check if all services are running.
```
docker compose ps
```

Schedule new todo job.

curl --location --request POST 'http://localhost:8080/api/v1/todos' \
--header 'Content-Type: application/json' \
--data-raw '{
    "id": 2
}'

Simulate failure.

curl --location --request POST 'http://localhost:8080/api/v1/todos' \
--header 'Content-Type: application/json' \
--data-raw '{
    "id": 1
}'

Check logs and verify if retry with exponential backoff works.

docker compose logs -f
# ...
# 2022-04-08 08:40:35.884 ERROR 84542 --- [z-demo_Worker-1] com.rbiedrawa.app.todos.TodoJob          : Todo [1] is odd - simulating failure😈
# 2022-04-08 08:40:35.888 ERROR 84542 --- [z-demo_Worker-1] c.r.app.core.scheduler.RetryableJobBean  : Job todoGroup.todoJob-1 failed with exception. Rescheduling...
# java.lang.RuntimeException: Todo 1 is odd
# 2022-04-08 08:40:35.920  INFO 84542 --- [z-demo_Worker-1] c.r.app.core.scheduler.RetryableJobBean  : Successfully rescheduled job todoGroup.todoJob-1 using new trigger todoGroup.todoJob-1 
# 
# 2022-04-08 08:40:39.931 ERROR 84542 --- [z-demo_Worker-2] com.rbiedrawa.app.todos.TodoJob          : Todo [1] is odd - simulating failure😈
# 2022-04-08 08:40:39.931 ERROR 84542 --- [z-demo_Worker-2] c.r.app.core.scheduler.RetryableJobBean  : Job todoGroup.todoJob-1 failed with exception. Rescheduling...
# java.lang.RuntimeException: Todo 1 is odd
# 2022-04-08 08:40:39.954  INFO 84542 --- [z-demo_Worker-2] c.r.app.core.scheduler.RetryableJobBean  : Successfully rescheduled job todoGroup.todoJob-1 using new trigger todoGroup.todoJob-1 
# ...

Open Adminer and investigate database structure. Connection details:
- System: PostgresSQL
- Server: db
- Username: demo
- Password: demo
- Database: demo
Stop services.
```
docker compose down -v
```

References

For further reference, please consider the following sections:

License

Distributed under the MIT License. See LICENSE for more information.

rbiedrawa/spring-quartz-flyway-poc