chore: refactor storage layer

internal/database/serializationutil/serializationutil.go

@@ -0,0 +1,36 @@
+package serializationutil
+
+import "encoding/binary"
+
+func Itob(v int64) []byte {
+	b := make([]byte, 8)
+	binary.BigEndian.PutUint64(b, uint64(v))
+	return b
+}
+
+func Btoi(b []byte) int64 {
+	return int64(binary.BigEndian.Uint64(b))
+}
+
+func Stob(v string) []byte {
+	var b []byte
+	b = append(b, Itob(int64(len(v)))...)
+	b = append(b, []byte(v)...)
+	return b
+}
+
+func Btos(b []byte) (string, int64) {
+	length := Btoi(b[:8])
+	return string(b[8:8+length]), 8+length
+}
+
+func BytesToKey(b []byte) []byte {
+	var key []byte
+	key = append(key, Itob(int64(len(b)))...)
+	key = append(key, b...)
+	return key
+}
+
+func NormalizeSnapshotId(id string) string {
+	return id[:8]
+}