# Flattening my Dependency Graph

DevFeed: [Flattening my Dependency Graph](<https://devfeed.tech/articles/flattening-my-dependency-graph-32249.md>)

Original publisher: [Read original article](<https://publicobject.com/2026/02/03/flattening-my-dependency-graph/>)

Author: Jesse Wilson

Published: 2026-02-03T05:28:50Z

Content type: opinion

Language: en

Sources: [Public Object](<https://devfeed.tech/sources/public-object.md>)

Topics: [Kotlin](<https://devfeed.tech/topics/kotlin.md>), [Persistence](<https://devfeed.tech/topics/persistence.md>), [Dependency injection](<https://devfeed.tech/topics/dependency-injection.md>), [PostgreSQL](<https://devfeed.tech/topics/postgresql.md>), [Ktor](<https://devfeed.tech/topics/ktor.md>)

Tags: [dependency-injection](<https://devfeed.tech/tags/dependency-injection.md>), [kotlin](<https://devfeed.tech/tags/kotlin.md>), [ktor](<https://devfeed.tech/tags/ktor.md>), [modules](<https://devfeed.tech/tags/modules.md>), [persistence](<https://devfeed.tech/tags/persistence.md>), [postgresql](<https://devfeed.tech/tags/postgresql.md>)

## AI overview

The author describes structuring a Kotlin server's dependency graph using a three-module pattern for each feature: public API, implementation, and dependency-injection wiring. The approach aims to support parallel builds, reduce unnecessary rebuilds, and keep dependencies manageable.

## Source excerpt

Rounds has a Kotlin server that integrates a few things: PostgreSQL persistence via SQLDelight (hosted on PlanetScale!) WebAuthn4J for Passkeys kotlinx.html for dynamic web pages Ktor for HTTP binding The service uses six database tables. The business domain tables are Game and GameEvent. Support for auth, sessions, and collaborative