初步实验使用KV数据库（pebble）存储缓存索引

internal/utils/kvstore/tx_test.go

@@ -0,0 +1,65 @@
+// Copyright 2024 GoEdge CDN goedge.cdn@gmail.com. All rights reserved. Official site: https://goedge.cn .
+
+package kvstore_test
+
+import (
+	"fmt"
+	"github.com/TeaOSLab/EdgeNode/internal/utils/kvstore"
+	"testing"
+)
+
+func TestTable_ReadTx(t *testing.T) {
+	store, err := kvstore.OpenStore("test")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer func() {
+		_ = store.Close()
+	}()
+
+	db, err := store.NewDB("TEST_DB")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	table, err := kvstore.NewCounterTable[uint64]("users_counter")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	db.AddTable(table)
+
+	err = table.WriteTx(func(tx *kvstore.Tx[uint64]) error {
+		for i := 0; i < 1000; i++ {
+			var key = fmt.Sprintf("a%03d", i)
+			setErr := tx.Set(key, uint64(i))
+			if setErr != nil {
+				return setErr
+			}
+
+			value, getErr := tx.Get(key)
+			if getErr != nil {
+				return getErr
+			}
+			t.Log("write:", key, "=>", value)
+		}
+		return nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = table.ReadTx(func(tx *kvstore.Tx[uint64]) error {
+		for _, key := range []string{"a100", "a101", "a102"} {
+			value, getErr := tx.Get(key)
+			if getErr != nil {
+				return getErr
+			}
+			t.Log("read:", key, "=>", value)
+		}
+		return nil
+	})
+	if err != nil {
+		t.Fatal(err)
+	}
+}