The T2-Modulith is an implementation of the T2-Project as a monolith. It has still a modular structure enforced by Spring Modulith. Therefore, we call it T2-Modulith.
You can find more information about the migration from the microservices implementation to a monolithic implementation in the Architecture documentation.
Refer to the Deployment documentation on how to build, run or deploy the T2-Modulith application.
Refer to the Usage documentation on how to use the T2-Modulith application. There are two ways: via the UI or via the HTTP API endpoints.
You can configure many properties used at start and during runtime of the T2-Modulith application.
There are different property files located at ./src/main/resources/application-*.yaml.
Depending on your active Spring profiles, different property files are used. See e.g. documentation section Run in development mode on how to use the profile dev.
T2 configuration:
| property | read from env var | description |
|---|---|---|
| t2.cart.TTL | T2_CART_TTL | time to live of items in cart (in seconds) |
| t2.cart.taskRate | T2_CART_TASKRATE | rate at which the cart checks for items that exceeded their TTL (in milliseconds) |
| t2.inventory.size | T2_INVENTORY_SIZE | number of items to be generated into the inventory repository on start up |
| t2.inventory.TTL | T2_INVENTORY_TTL | time to live of reservations (in seconds) |
| t2.inventory.taskRate | T2_INVENTORY_TASKRATE | rate at which the inventory checks for reservations that exceeded their TTL (in milliseconds). |
| t2.inventory.setUnitsToMax | T2_INVENTORY_SET_UNITS_TO_MAX | boolean value. if true all units will be set to max integer. helpful for load testing scenarios |
| t2.payment.provider.enabled | T2_PAYMENT_PROVIDER_ENABLED | boolean value, defaults to true. if false, no connection to payment provider is made. |
| t2.payment.provider.timeout | T2_PAYMENT_PROVIDER_TIMEOUT | timeout in seconds. the payment service waits this long for an reply from the payment provider. |
| t2.payment.provider.dummy.url | T2_PAYMENT_PROVIDER_DUMMY_URL | url of the payment provider. |
| t2.computation-simulator.enabled | T2_COMPUTATION_SIMULATOR_ENABLED | boolean value, defaults to false. if true, the service computation-simulator gets called when an order is confirmed to simulate a compute intensive scenario. |
| t2.computation-simulator.pi.totalPoints | T2_COMPUTATION_SIMULATOR_PI_TOTAL_POINTS | total points that should be calculated of PI. 100000000 requires around 5 sec, 1000000000 around ~1 min |
Setting either TTL or taskrate to a value less or equal to zero disables the collection of expired entries (cart module and inventory module).
Postgres database:
| property | read from env var | description |
|---|---|---|
| spring.datasource.url | SPRING_DATASOURCE_URL | |
| spring.datasource.username | SPRING_DATASOURCE_USERNAME | |
| spring.datasource.password | SPRING_DATASOURCE_PASSWORD | |
| spring.datasource.driver-class-name | SPRING_DATASOURCE_DRIVER_CLASS_NAME | Should be usually set to org.postgresql.Driver |
MongoDB database:
| property | read from env var | description |
|---|---|---|
| spring.data.mongodb.uri | MONGO_HOST | host of the mongo db |