Benchmark for serial inserts for comparison

extras/benchmarks/lib/benchmarks.dart

@@ -18,6 +18,7 @@ List<Reportable> allBenchmarks(ScoreEmitter emitter) {
     SelectStringBenchmark(emitter),
     // high-level moor apis
     KeyValueInsertBatch(emitter),
+    KeyValueInsertSerial(emitter),
     // sql parser
     ParseMoorFile(emitter),
     TokenizerBenchmark(emitter),

extras/benchmarks/lib/src/moor/database.dart

@@ -1,5 +1,9 @@
+import 'dart:io';
+
 import 'package:moor/moor.dart';
 import 'package:moor_ffi/moor_ffi.dart';
+import 'package:path/path.dart' as p;
+import 'package:uuid/uuid.dart';
 
 part 'database.g.dart';
 
@@ -13,8 +17,18 @@ class KeyValues extends Table {
 
 @UseMoor(tables: [KeyValues])
 class Database extends _$Database {
-  Database() : super(VmDatabase.memory());
+  Database() : super(_obtainExecutor());
 
   @override
   int get schemaVersion => 1;
 }
+
+final _uuid = Uuid();
+
+QueryExecutor _obtainExecutor() {
+  final file =
+      File(p.join(Directory.systemTemp.path, 'moor_benchmarks', _uuid.v4()));
+  file.parent.createSync();
+
+  return VmDatabase(file);
+}

extras/benchmarks/lib/src/moor/key_value_insert.dart

@@ -13,7 +13,7 @@ class KeyValueInsertBatch extends AsyncBenchmarkBase {
   final Uuid uuid = Uuid();
 
   KeyValueInsertBatch(ScoreEmitter emitter)
-      : super('Inserting $_size entries', emitter);
+      : super('Inserting $_size entries (batch)', emitter);
 
   @override
   Future<void> run() async {
@@ -30,3 +30,25 @@ class KeyValueInsertBatch extends AsyncBenchmarkBase {
     });
   }
 }
+
+class KeyValueInsertSerial extends AsyncBenchmarkBase {
+  final _db = Database();
+  final Uuid uuid = Uuid();
+
+  KeyValueInsertSerial(ScoreEmitter emitter)
+      : super('Inserting $_size entries (serial)', emitter);
+
+  @override
+  Future<void> run() async {
+    await _db.delete(_db.keyValues).go();
+
+    for (var i = 0; i < _size; i++) {
+      final key = uuid.v4();
+      final value = uuid.v4();
+
+      await _db
+          .into(_db.keyValues)
+          .insert(KeyValuesCompanion.insert(key: key, value: value));
+    }
+  }
+}

extras/benchmarks/pubspec.yaml

@@ -7,6 +7,7 @@ dependencies:
   benchmark_harness: ^1.0.5
   intl: ^0.16.0
   uuid: ^2.0.0
+  path: ^1.6.0
 dev_dependencies:
   moor_generator:
   build_runner: