Heimdall: Actually set max lifetime and pool size.

foundation-heimdall/src/main/kotlin/cloud/kubelet/foundation/heimdall/FoundationHeimdallPlugin.kt

@@ -21,6 +21,7 @@ import org.bukkit.event.player.*
 import org.bukkit.plugin.java.JavaPlugin
 import org.jetbrains.exposed.sql.Database
 import org.postgresql.Driver
+import java.time.Duration
 import java.time.Instant
 import java.util.*
 import java.util.concurrent.ConcurrentHashMap
@@ -63,6 +64,8 @@ class FoundationHeimdallPlugin : JavaPlugin(), Listener {
       username = config.db.username
       password = config.db.password
       schema = "heimdall"
+      maximumPoolSize = 10
+      maxLifetime = Duration.ofMinutes(10).toMillis()
     })
     val initMigrationContent = FoundationHeimdallPlugin::class.java.getResourceAsStream(
       "/init.sql"

tool-gjallarhorn/src/main/kotlin/cloud/kubelet/foundation/gjallarhorn/GjallarhornCommand.kt

@@ -28,7 +28,7 @@ class GjallarhornCommand : CliktCommand(invokeWithoutSubcommand = true) {
       password = jdbcConnectionPassword
       minimumIdle = dbPoolSize / 2
       maximumPoolSize = dbPoolSize
-      maxLifetime = Duration.ofHours(2).toMillis()
+      maxLifetime = Duration.ofMinutes(10).toMillis()
     })
     val db = Database.connect(pool)
     currentContext.findOrSetObject { db }