feat: 使用异步提高性能

Author: ArgoZhang

src/components/BootstrapBlazor.IP2Region/Services/IP2RegionService.cs

@@ -31,20 +31,22 @@ public IP2RegionService(IOptions<BootstrapBlazorOptions> options, IOptions<IP2Re
     private readonly IOptions<BootstrapBlazorOptions> _options;
     private readonly IOptions<IP2RegionOptions> _ipOptions;
     private readonly ILogger<IP2RegionService> _logger;
+    private readonly TaskCompletionSource _tcs = new();
     private Searcher? _search;
 
     /// <summary>
     /// <inheritdoc/>
     /// </summary>
     /// <param name="ip"></param>
-    protected override Task<string?> LocateByIp(string ip)
+    protected override async Task<string?> LocateByIp(string ip)
     {
+        await _tcs.Task;
         string? result = null;
         if (_search != null && _options.Value.WebClientOptions.EnableIpLocator)
         {
             result = _search.Search(ip);
         }
-        return Task.FromResult(result);
+        return result;
     }
 
     private void InitSearch()
@@ -60,9 +62,11 @@ private void InitSearch()
         {
             _search = new Searcher(CachePolicy.Content, xdbPath);
             _logger.LogInformation("IP2Region xdb file {dbPath} loaded", xdbPath);
+            _tcs.TrySetResult();
         }
         catch (Exception ex)
         {
+            _tcs.TrySetException(ex);
             _logger.LogError(ex, "IP2Region xdb file path: {dbPath}", xdbPath);
         }
     }