多项新特性和更改：

- 添加模拟数据生成器；
- GC时添加碎片整理；
- 优化日志输出，添加更多DEBUG监控项目；
- 修复输出时分库配置逻辑的严重错误；
- 优化了少许内存性能，减少Lambda闭包分配；

MesETL.App/Services/DataRecordQueue.cs

@@ -39,6 +39,10 @@ public class DataRecordQueue : IDisposable
     {
         if (_queue.TryTake(out record))
         {
+            // if (record.Database is not null)
+            // {
+            //     Console.WriteLine("out " + record.Database);
+            // }
             Interlocked.Add(ref _currentCharCount, -record.FieldCharCount);
             OnRecordRead?.Invoke();
             return true;

MesETL.App/Services/ErrorRecorder/OutputErrorRecorder.cs

@@ -9,6 +9,7 @@ public sealed class OutputErrorRecorder : ErrorRecorder
     private readonly string _outputDir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, $"ErrorRecords/{UID}/Output");
     private readonly string _database;
     private readonly Dictionary<string, int> _logIndex = new();
+    private static readonly object Lock = new();
 
     public OutputErrorRecorder(string database, ILogger logger) : base(logger)
     {
@@ -50,7 +51,17 @@ public sealed class OutputErrorRecorder : ErrorRecorder
 
 
                       """;
-        await File.AppendAllTextAsync(filePath, content, Encoding.UTF8);
+        try
+        {
+            lock (Lock)
+            {
+                File.AppendAllText(filePath, content, Encoding.UTF8);
+            }
+        }
+        catch(Exception e)
+        {
+            Logger.LogError(e, "输出错误日志时发生错误");   
+        }
     }
 
     /// <summary>

MesETL.App/Services/ProcessContext.cs

@@ -59,11 +59,12 @@ public class ProcessContext
 
     public void AddTableInput(string table, int count)
     {
-        _tableProgress.AddOrUpdate(table, (input:count, output:0), (k, tuple) =>
+        if (!_tableProgress.TryAdd(table, (input: count, output: 0)))
         {
+            var tuple = _tableProgress[table];
             tuple.input += count;
-            return tuple;
-        });
+            _tableProgress[table] = tuple;
+        }
     }
     
     public void AddTableOutput(string table, int count)

MesETL.App/Services/Seq/SeqService.cs

@@ -117,6 +117,7 @@ public class SeqService
     /// </summary>
     public async Task ApplyToDatabaseAsync()
     {
+        if (_cachedSequence.Count == 0) return;
         var sql = GenerateCachedSeqSql();
         await DatabaseHelper.NonQueryAsync(_connectionString, sql);
     }