diff --git a/FastGithub.Configuration/DomainPattern.cs b/FastGithub.Configuration/DomainPattern.cs
index 12f425e..0e841f2 100644
--- a/FastGithub.Configuration/DomainPattern.cs
+++ b/FastGithub.Configuration/DomainPattern.cs
@@ -7,7 +7,7 @@ namespace FastGithub.Configuration
     /// 表示域名表达式
     /// *表示除.之外任意0到多个字符
     /// </summary>
-    sealed class DomainPattern : IComparable<DomainPattern>
+    public class DomainPattern : IComparable<DomainPattern>
     {
         private readonly Regex regex;
         private readonly string domainPattern;
diff --git a/FastGithub.Configuration/FastGithubConfig.cs b/FastGithub.Configuration/FastGithubConfig.cs
index 17fcb40..bf929e5 100644
--- a/FastGithub.Configuration/FastGithubConfig.cs
+++ b/FastGithub.Configuration/FastGithubConfig.cs
@@ -117,9 +117,9 @@ namespace FastGithub.Configuration
         /// 获取所有域名表达式
         /// </summary>
         /// <returns></returns>
-        public string[] GetDomainPatterns()
+        public DomainPattern[] GetDomainPatterns()
         {
-            return this.domainConfigs.Keys.Select(item => item.ToString()).ToArray();
+            return this.domainConfigs.Keys.ToArray();
         }
     }
 }
diff --git a/FastGithub.DomainResolve/DomainSpeedTestService.cs b/FastGithub.DomainResolve/DomainSpeedTestService.cs
index 890305c..c957ff2 100644
--- a/FastGithub.DomainResolve/DomainSpeedTestService.cs
+++ b/FastGithub.DomainResolve/DomainSpeedTestService.cs
@@ -1,4 +1,5 @@
-using System;
+using FastGithub.Configuration;
+using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
@@ -71,7 +72,7 @@ namespace FastGithub.DomainResolve
                 return;
             }
 
-            var fileStream = File.OpenRead(DATA_FILE);
+            using var fileStream = File.OpenRead(DATA_FILE);
             var domains = await JsonSerializer.DeserializeAsync<string[]>(fileStream, cancellationToken: cancellationToken);
             if (domains == null)
             {
@@ -91,11 +92,24 @@ namespace FastGithub.DomainResolve
         /// 保存数据
         /// </summary>
         /// <returns></returns>
-        public async Task SaveDataAsync()
+        public async Task<bool> SaveDataAsync()
         {
-            var domains = this.domainIPAddressHashSet.Keys.ToArray();
-            using var fileStream = File.OpenWrite(DATA_FILE);
-            await JsonSerializer.SerializeAsync(fileStream, domains);
+            var domains = this.domainIPAddressHashSet.Keys
+                .Select(item => new DomainPattern(item))
+                .OrderBy(item => item)
+                .Select(item => item.ToString())
+                .ToArray();
+
+            try
+            {
+                using var fileStream = File.OpenWrite(DATA_FILE);
+                await JsonSerializer.SerializeAsync(fileStream, domains, new JsonSerializerOptions { WriteIndented = true });
+                return true;
+            }
+            catch (Exception)
+            {
+                return false;
+            }
         }
 
         /// <summary>