diff --git a/src/Concerns/Debuggable.php b/src/Concerns/Debuggable.php
index 98697f1d..ff781f89 100644
--- a/src/Concerns/Debuggable.php
+++ b/src/Concerns/Debuggable.php
@@ -9,6 +9,8 @@ use Stancl\Tenancy\Enums\LogMode;
 use Stancl\Tenancy\Events\Contracts\TenancyEvent;
 use Stancl\Tenancy\Tenancy;
 
+// todo finish this feature
+
 /**
  * @mixin Tenancy
  */
diff --git a/src/Database/DatabaseConfig.php b/src/Database/DatabaseConfig.php
index 4c33348d..a4c79582 100644
--- a/src/Database/DatabaseConfig.php
+++ b/src/Database/DatabaseConfig.php
@@ -12,14 +12,17 @@ use Stancl\Tenancy\Database\Contracts\TenantWithDatabase as Tenant;
 
 class DatabaseConfig
 {
-    // todo docblocks
+    /** The tenant whose database we're dealing with. */
     public Tenant&Model $tenant;
 
-    public static Closure $usernameGenerator;
+    /** Database username generator (can be set by the developer.) */
+    public static Closure|null $usernameGenerator = null;
 
-    public static Closure $passwordGenerator;
+    /** Database password generator (can be set by the developer.) */
+    public static Closure|null $passwordGenerator = null;
 
-    public static Closure $databaseNameGenerator;
+    /** Database name generator (can be set by the developer.) */
+    public static Closure|null $databaseNameGenerator = null;
 
     public static function __constructStatic(): void
     {
diff --git a/src/Database/TenantDatabaseManagers/MicrosoftSQLDatabaseManager.php b/src/Database/TenantDatabaseManagers/MicrosoftSQLDatabaseManager.php
index 241a879a..65950baa 100644
--- a/src/Database/TenantDatabaseManagers/MicrosoftSQLDatabaseManager.php
+++ b/src/Database/TenantDatabaseManagers/MicrosoftSQLDatabaseManager.php
@@ -2,34 +2,12 @@
 
 declare(strict_types=1);
 
-// todo likely move all of these classes to Database\
-
 namespace Stancl\Tenancy\Database\TenantDatabaseManagers;
 
-use Illuminate\Database\Connection;
-use Illuminate\Support\Facades\DB;
-use Stancl\Tenancy\Database\Contracts\TenantDatabaseManager;
 use Stancl\Tenancy\Database\Contracts\TenantWithDatabase;
-use Stancl\Tenancy\Database\Exceptions\NoConnectionSetException;
 
-class MicrosoftSQLDatabaseManager implements TenantDatabaseManager
+class MicrosoftSQLDatabaseManager extends TenantDatabaseManager
 {
-    protected string $connection; // todo docblock, in all of these classes
-
-    protected function database(): Connection // todo consider abstracting this method & setConnection() into a base class
-    {
-        if ($this->connection === null) {
-            throw new NoConnectionSetException(static::class);
-        }
-
-        return DB::connection($this->connection);
-    }
-
-    public function setConnection(string $connection): void
-    {
-        $this->connection = $connection;
-    }
-
     public function createDatabase(TenantWithDatabase $tenant): bool
     {
         $database = $tenant->database()->getName();
@@ -48,11 +26,4 @@ class MicrosoftSQLDatabaseManager implements TenantDatabaseManager
     {
         return (bool) $this->database()->select("SELECT name FROM master.sys.databases WHERE name = '$name'");
     }
-
-    public function makeConnectionConfig(array $baseConfig, string $databaseName): array
-    {
-        $baseConfig['database'] = $databaseName;
-
-        return $baseConfig;
-    }
 }
diff --git a/src/Database/TenantDatabaseManagers/MySQLDatabaseManager.php b/src/Database/TenantDatabaseManagers/MySQLDatabaseManager.php
index 92a434c2..c96c162b 100644
--- a/src/Database/TenantDatabaseManagers/MySQLDatabaseManager.php
+++ b/src/Database/TenantDatabaseManagers/MySQLDatabaseManager.php
@@ -4,31 +4,10 @@ declare(strict_types=1);
 
 namespace Stancl\Tenancy\Database\TenantDatabaseManagers;
 
-use Illuminate\Database\Connection;
-use Illuminate\Support\Facades\DB;
-use Stancl\Tenancy\Database\Contracts\TenantDatabaseManager;
 use Stancl\Tenancy\Database\Contracts\TenantWithDatabase;
-use Stancl\Tenancy\Database\Exceptions\NoConnectionSetException;
 
-class MySQLDatabaseManager implements TenantDatabaseManager
+class MySQLDatabaseManager extends TenantDatabaseManager
 {
-    /** @var string */
-    protected $connection;
-
-    protected function database(): Connection
-    {
-        if ($this->connection === null) {
-            throw new NoConnectionSetException(static::class);
-        }
-
-        return DB::connection($this->connection);
-    }
-
-    public function setConnection(string $connection): void
-    {
-        $this->connection = $connection;
-    }
-
     public function createDatabase(TenantWithDatabase $tenant): bool
     {
         $database = $tenant->database()->getName();
@@ -47,11 +26,4 @@ class MySQLDatabaseManager implements TenantDatabaseManager
     {
         return (bool) $this->database()->select("SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = '$name'");
     }
-
-    public function makeConnectionConfig(array $baseConfig, string $databaseName): array
-    {
-        $baseConfig['database'] = $databaseName;
-
-        return $baseConfig;
-    }
 }
diff --git a/src/Database/TenantDatabaseManagers/PermissionControlledMySQLDatabaseManager.php b/src/Database/TenantDatabaseManagers/PermissionControlledMySQLDatabaseManager.php
index 30913f59..337864dc 100644
--- a/src/Database/TenantDatabaseManagers/PermissionControlledMySQLDatabaseManager.php
+++ b/src/Database/TenantDatabaseManagers/PermissionControlledMySQLDatabaseManager.php
@@ -54,11 +54,4 @@ class PermissionControlledMySQLDatabaseManager extends MySQLDatabaseManager impl
     {
         return (bool) $this->database()->select("SELECT count(*) FROM mysql.user WHERE user = '$username'")[0]->{'count(*)'};
     }
-
-    public function makeConnectionConfig(array $baseConfig, string $databaseName): array
-    {
-        $baseConfig['database'] = $databaseName;
-
-        return $baseConfig;
-    }
 }
diff --git a/src/Database/TenantDatabaseManagers/PostgreSQLDatabaseManager.php b/src/Database/TenantDatabaseManagers/PostgreSQLDatabaseManager.php
index d342b7b0..6a3aee2e 100644
--- a/src/Database/TenantDatabaseManagers/PostgreSQLDatabaseManager.php
+++ b/src/Database/TenantDatabaseManagers/PostgreSQLDatabaseManager.php
@@ -4,31 +4,10 @@ declare(strict_types=1);
 
 namespace Stancl\Tenancy\Database\TenantDatabaseManagers;
 
-use Illuminate\Database\Connection;
-use Illuminate\Support\Facades\DB;
-use Stancl\Tenancy\Database\Contracts\TenantDatabaseManager;
 use Stancl\Tenancy\Database\Contracts\TenantWithDatabase;
-use Stancl\Tenancy\Database\Exceptions\NoConnectionSetException;
 
-class PostgreSQLDatabaseManager implements TenantDatabaseManager
+class PostgreSQLDatabaseManager extends TenantDatabaseManager
 {
-    /** @var string */
-    protected $connection;
-
-    protected function database(): Connection
-    {
-        if ($this->connection === null) {
-            throw new NoConnectionSetException(static::class);
-        }
-
-        return DB::connection($this->connection);
-    }
-
-    public function setConnection(string $connection): void
-    {
-        $this->connection = $connection;
-    }
-
     public function createDatabase(TenantWithDatabase $tenant): bool
     {
         return $this->database()->statement("CREATE DATABASE \"{$tenant->database()->getName()}\" WITH TEMPLATE=template0");
@@ -43,11 +22,4 @@ class PostgreSQLDatabaseManager implements TenantDatabaseManager
     {
         return (bool) $this->database()->select("SELECT datname FROM pg_database WHERE datname = '$name'");
     }
-
-    public function makeConnectionConfig(array $baseConfig, string $databaseName): array
-    {
-        $baseConfig['database'] = $databaseName;
-
-        return $baseConfig;
-    }
 }
diff --git a/src/Database/TenantDatabaseManagers/PostgreSQLSchemaManager.php b/src/Database/TenantDatabaseManagers/PostgreSQLSchemaManager.php
index 1a3dcc77..fa5aa593 100644
--- a/src/Database/TenantDatabaseManagers/PostgreSQLSchemaManager.php
+++ b/src/Database/TenantDatabaseManagers/PostgreSQLSchemaManager.php
@@ -4,31 +4,10 @@ declare(strict_types=1);
 
 namespace Stancl\Tenancy\Database\TenantDatabaseManagers;
 
-use Illuminate\Database\Connection;
-use Illuminate\Support\Facades\DB;
-use Stancl\Tenancy\Database\Contracts\TenantDatabaseManager;
 use Stancl\Tenancy\Database\Contracts\TenantWithDatabase;
-use Stancl\Tenancy\Database\Exceptions\NoConnectionSetException;
 
-class PostgreSQLSchemaManager implements TenantDatabaseManager
+class PostgreSQLSchemaManager extends TenantDatabaseManager
 {
-    /** @var string */
-    protected $connection;
-
-    protected function database(): Connection
-    {
-        if ($this->connection === null) {
-            throw new NoConnectionSetException(static::class);
-        }
-
-        return DB::connection($this->connection);
-    }
-
-    public function setConnection(string $connection): void
-    {
-        $this->connection = $connection;
-    }
-
     public function createDatabase(TenantWithDatabase $tenant): bool
     {
         return $this->database()->statement("CREATE SCHEMA \"{$tenant->database()->getName()}\"");
diff --git a/src/Database/TenantDatabaseManagers/SQLiteDatabaseManager.php b/src/Database/TenantDatabaseManagers/SQLiteDatabaseManager.php
index 6f3a8f62..59c373a9 100644
--- a/src/Database/TenantDatabaseManagers/SQLiteDatabaseManager.php
+++ b/src/Database/TenantDatabaseManagers/SQLiteDatabaseManager.php
@@ -6,6 +6,7 @@ namespace Stancl\Tenancy\Database\TenantDatabaseManagers;
 
 use Stancl\Tenancy\Database\Contracts\TenantDatabaseManager;
 use Stancl\Tenancy\Database\Contracts\TenantWithDatabase;
+use Throwable;
 
 class SQLiteDatabaseManager implements TenantDatabaseManager
 {
@@ -13,7 +14,7 @@ class SQLiteDatabaseManager implements TenantDatabaseManager
     {
         try {
             return file_put_contents(database_path($tenant->database()->getName()), '');
-        } catch (\Throwable) {
+        } catch (Throwable) {
             return false;
         }
     }
@@ -22,7 +23,7 @@ class SQLiteDatabaseManager implements TenantDatabaseManager
     {
         try {
             return unlink(database_path($tenant->database()->getName()));
-        } catch (\Throwable) {
+        } catch (Throwable) {
             return false;
         }
     }
diff --git a/src/Database/TenantDatabaseManagers/TenantDatabaseManager.php b/src/Database/TenantDatabaseManagers/TenantDatabaseManager.php
new file mode 100644
index 00000000..f0751f0d
--- /dev/null
+++ b/src/Database/TenantDatabaseManagers/TenantDatabaseManager.php
@@ -0,0 +1,35 @@
+<?php
+
+namespace Stancl\Tenancy\Database\TenantDatabaseManagers;
+
+use Illuminate\Database\Connection;
+use Illuminate\Support\Facades\DB;
+use Stancl\Tenancy\Database\Contracts\TenantDatabaseManager as Contract;
+use Stancl\Tenancy\Database\Exceptions\NoConnectionSetException;
+
+abstract class TenantDatabaseManager implements Contract // todo better naming?
+{
+    /** The database connection to the server. */
+    protected string $connection;
+
+    protected function database(): Connection
+    {
+        if (! isset($this->connection)) {
+            throw new NoConnectionSetException(static::class);
+        }
+
+        return DB::connection($this->connection);
+    }
+
+    public function setConnection(string $connection): void
+    {
+        $this->connection = $connection;
+    }
+
+    public function makeConnectionConfig(array $baseConfig, string $databaseName): array
+    {
+        $baseConfig['database'] = $databaseName;
+
+        return $baseConfig;
+    }
+}
diff --git a/src/Resolvers/DomainTenantResolver.php b/src/Resolvers/DomainTenantResolver.php
index 44ec4fdc..eb25ad26 100644
--- a/src/Resolvers/DomainTenantResolver.php
+++ b/src/Resolvers/DomainTenantResolver.php
@@ -26,9 +26,7 @@ class DomainTenantResolver extends Contracts\CachedTenantResolver
 
         /** @var Tenant|null $tenant */
         $tenant = config('tenancy.tenant_model')::query()
-            ->whereHas('domains', function (Builder $query) use ($domain) {
-                $query->where('domain', $domain);
-            })
+            ->whereHas('domains', fn (Builder $query) => $query->where('domain', $domain))
             ->with('domains')
             ->first();