We don't need that much RAM

Dockerfile

@@ -44,4 +44,4 @@ COPY --from=builder /tmp/app/target/app-*.jar /app/app.jar
 COPY --from=jdkbuilder /myjdk /myjdk
 WORKDIR /app
 
-CMD ["/myjdk/bin/java", "-server", "-XX:+UnlockExperimentalVMOptions", "-Xms256m", "-Xmx1g", "-XX:+UseG1GC", "-XX:MaxGCPauseMillis=100", "-XX:+UseStringDeduplication", "-jar", "app.jar"]
+CMD ["/myjdk/bin/java", "-server", "-XX:+UnlockExperimentalVMOptions", "-Xms64m", "-Xmx256m", "-XX:+UseG1GC", "-XX:MaxGCPauseMillis=100", "-XX:+UseStringDeduplication", "-jar", "app.jar"]

app/src/main/kotlin/Config.kt

@@ -6,7 +6,7 @@ import be.simplenotes.shared.config.ServerConfig
 import java.util.*
 import java.util.concurrent.TimeUnit
 
-object Config {
+class Config {
     //region Config loading
     private val properties: Properties = javaClass
         .getResource("/application.properties")

app/src/main/kotlin/SimpleNotes.kt

@@ -3,22 +3,29 @@ package be.simplenotes.app
 import be.simplenotes.app.extensions.addShutdownHook
 import be.simplenotes.app.modules.*
 import be.simplenotes.domain.domainModule
+import be.simplenotes.persistance.migrationModule
 import be.simplenotes.persistance.persistanceModule
 import be.simplenotes.search.searchModule
 import org.koin.core.context.startKoin
+import org.koin.core.context.unloadKoinModules
 
-fun main() = startKoin {
-    modules(
-        serverModule,
-        persistanceModule,
-        configModule,
-        baseModule,
-        userModule,
-        noteModule,
-        settingsModule,
-        domainModule,
-        searchModule,
-        apiModule,
-        jsonModule
-    )
-}.addShutdownHook()
+fun main() {
+    startKoin {
+        modules(
+            serverModule,
+            persistanceModule,
+            migrationModule,
+            configModule,
+            baseModule,
+            userModule,
+            noteModule,
+            settingsModule,
+            domainModule,
+            searchModule,
+            apiModule,
+            jsonModule
+        )
+    }.addShutdownHook()
+
+    unloadKoinModules(listOf(migrationModule, configModule))
+}

app/src/main/kotlin/modules/ConfigModule.kt

@@ -4,7 +4,8 @@ import be.simplenotes.app.Config
 import org.koin.dsl.module
 
 val configModule = module {
-    single { Config.dataSourceConfig }
-    single { Config.jwtConfig }
-    single { Config.serverConfig }
+    single { Config() }
+    single { get<Config>().dataSourceConfig }
+    single { get<Config>().jwtConfig }
+    single { get<Config>().serverConfig }
 }

persistance/src/main/kotlin/PersistanceModule.kt

@@ -29,10 +29,13 @@ private fun hikariDataSource(conf: DataSourceConfig): HikariDataSource {
     return HikariDataSource(hikariConfig)
 }
 
+val migrationModule = module {
+    single<DbMigrations> { DbMigrationsImpl(get(), get()) }
+}
+
 val persistanceModule = module {
     single<UserRepository> { UserRepositoryImpl(get()) }
     single<NoteRepository> { NoteRepositoryImpl(get()) }
-    single<DbMigrations> { DbMigrationsImpl(get(), get()) }
     single { hikariDataSource(get()) } bind DataSource::class onClose { it?.close() }
     single {
         get<DbMigrations>().migrate()

persistance/src/test/kotlin/notes/NoteRepositoryImplTest.kt

@@ -4,6 +4,7 @@ import be.simplenotes.domain.model.*
 import be.simplenotes.domain.usecases.repositories.NoteRepository
 import be.simplenotes.domain.usecases.repositories.UserRepository
 import be.simplenotes.persistance.DbMigrations
+import be.simplenotes.persistance.migrationModule
 import be.simplenotes.persistance.persistanceModule
 import be.simplenotes.shared.config.DataSourceConfig
 import me.liuwj.ktorm.database.*
@@ -27,7 +28,7 @@ internal class NoteRepositoryImplTest {
     }
 
     private val koinApp = koinApplication {
-        modules(persistanceModule, testModule)
+        modules(persistanceModule, migrationModule, testModule)
     }
 
     private fun dataSourceConfig() = DataSourceConfig(

persistance/src/test/kotlin/users/UserRepositoryImplTest.kt

@@ -3,6 +3,7 @@ package be.simplenotes.persistance.users
 import be.simplenotes.domain.model.User
 import be.simplenotes.domain.usecases.repositories.UserRepository
 import be.simplenotes.persistance.DbMigrations
+import be.simplenotes.persistance.migrationModule
 import be.simplenotes.persistance.persistanceModule
 import be.simplenotes.shared.config.DataSourceConfig
 import me.liuwj.ktorm.database.*
@@ -28,7 +29,7 @@ internal class UserRepositoryImplTest {
     }
 
     private val koinApp = koinApplication {
-        modules(persistanceModule, testModule)
+        modules(persistanceModule, migrationModule, testModule)
     }
 
     private fun dataSourceConfig() = DataSourceConfig(