Debugging and Diagnostics

🔍 Debugging and Diagnostics

Common Issues

1. Performance Issues

Symptoms

• Slow UUID generation
• High CPU usage
• Memory pressure

Diagnostics

// Enable performance tracking
using System.Diagnostics;

var sw = Stopwatch.StartNew();
for (int i = 0; i < 1000000; i++)
{
    var id = new UUID();
}
sw.Stop();
Console.WriteLine($"Time taken: {sw.ElapsedMilliseconds}ms");

Solutions

• Use bulk generation for multiple UUIDs
• Implement object pooling for frequent operations
• Avoid unnecessary string conversions

2. Thread Safety Issues

Symptoms

• Duplicate UUIDs
• Race conditions
• Inconsistent behavior in multi-threaded scenarios

Diagnostics

// Test thread safety
var ids = new ConcurrentBag<UUID>();
Parallel.For(0, 1000000, _ =>
{
    ids.Add(new UUID());
});

// Check for duplicates
var duplicates = ids.GroupBy(x => x)
    .Where(g => g.Count() > 1)
    .Select(g => g.Key);

Solutions

• Use the built-in thread-safe generation
• Avoid shared state modifications
• Implement proper synchronization when needed

3. Memory Issues

Symptoms

• High memory usage
• Frequent garbage collection
• Out of memory exceptions

Diagnostics

// Monitor memory usage
var before = GC.GetTotalMemory(true);
// Your UUID operations here
var after = GC.GetTotalMemory(true);
Console.WriteLine($"Memory used: {after - before} bytes");

Solutions

• Use value type (struct) operations
• Implement array pooling for bulk operations
• Avoid unnecessary object creation

Debugging Tools

1. Performance Profiling

public static class UUIDProfiler
{
    public static void ProfileGeneration(int count)
    {
        var sw = Stopwatch.StartNew();
        for (int i = 0; i < count; i++)
        {
            var id = new UUID();
        }
        sw.Stop();
        
        Console.WriteLine($"Generated {count:N0} UUIDs in {sw.ElapsedMilliseconds}ms");
        Console.WriteLine($"Average time per UUID: {sw.ElapsedMilliseconds / (double)count}ms");
    }
}

2. Memory Analysis

public static class UUIDMemoryAnalyzer
{
    public static void AnalyzeMemoryUsage(int count)
    {
        GC.Collect();
        var before = GC.GetTotalMemory(true);
        
        var ids = new UUID[count];
        for (int i = 0; i < count; i++)
        {
            ids[i] = new UUID();
        }
        
        var after = GC.GetTotalMemory(false);
        Console.WriteLine($"Memory per UUID: {(after - before) / (double)count} bytes");
    }
}

Best Practices

1. Performance Optimization

   • Use appropriate string format methods
   • Implement caching for frequently used UUIDs
   • Avoid unnecessary conversions

2. Thread Safety

   • Use thread-local storage when appropriate
   • Implement proper synchronization
   • Avoid shared state modifications

3. Memory Management

   • Use value type operations
   • Implement object pooling
   • Avoid unnecessary allocations

Logging and Monitoring

public static class UUIDLogger
{
    public static void LogOperation(Action operation, string operationName)
    {
        var sw = Stopwatch.StartNew();
        try
        {
            operation();
            sw.Stop();
            Console.WriteLine($"{operationName} completed in {sw.ElapsedMilliseconds}ms");
        }
        catch (Exception ex)
        {
            Console.WriteLine($"Error in {operationName}: {ex.Message}");
            throw;
        }
    }
}