FIBONACCI Task Manager

This application was design in hexagonal architecture with few bounded contexts (modules):

For more description see: fibonacci-cluster-docker and fibonacci-cluster-k8s

Requirements

• Java 21
• Artemis
• PostgreSQL

Configuration

App can be configured by environment variables:

• BROKER_URL - the URI to connect to the Artemis cluster

• BROKER_USER - the Artemis user

• BROKER_PASSWORD - the Artemis password

• JOB_RESULT_QUEUE_NAME - the name of the job result queue

• RESULT_LISTENER_CONCURRENCY - the consumer concurrency, by default 1-10

• JMS_SESSION_CACHE_SIZE - the size of the cache for SessionConnectionFactory, by default 5

• TOMCAT_PORT - the port of exposed API, by default 8080

• POSTGRES_DATASOURCE_URL - the URL to the PostgreSQL datasource

• POSTGRES_USER - the database user

• POSTGRES_PASSWORD - the database password

• POSTGRESS_POOL_SIZE - the database connection pool size, by default 5

• POSTGRESS_CONNECTION_TIMEOUT the database connection timeout, by default 5000 ms

• FIB_ALGORITHMS - the list of active Fibonacci numbers algorithms, by default all are activated. The possible values are: ITERATIVE,RECURSIVE,BINETS,EXPONENTIAL

The example configuration:

BROKER_URL=tcp://localhost:61616
BROKER_USER=artemis
BROKER_PASSWORD=artemis
JOB_RESULT_QUEUE_NAME=job-result

POSTGRES_DATASOURCE_URL=jdbc:postgresql://localhost:5432/task_manager
POSTGRES_PASSWORD=postgres
POSTGRES_USER=postgres