feat: 添加 database - cache(redis)

tool/string.go

@@ -0,0 +1,11 @@
+package tool
+
+import "unsafe"
+
+func BytesToString(b []byte) string {
+	return unsafe.String(unsafe.SliceData(b), len(b))
+}
+
+func StringToBytes(s string) []byte {
+	return unsafe.Slice(unsafe.StringData(s), len(s))
+}