# Spot the bug: .NET

> One snippet. Find the bug, or prove there isn't one.

Daily challenge: 2026-08-19 (UTC) · Senior

```csharp
using System.Collections.Generic;

public class RequestCounter
{
    private readonly Dictionary<string, int> _counts = new();
    private readonly object _lock = new();

    public void Increment(string endpoint)
    {
        lock (_lock)
        {
            if (!_counts.ContainsKey(endpoint))
                _counts[endpoint] = 0;
            _counts[endpoint]++;
        }
    }

    public int GetCount(string endpoint)
    {
        return _counts.TryGetValue(endpoint, out var count) ? count : 0;
    }
}
```

## Your verdict

- Security flaw
- Logic bug
- Code style
- No issue

One attempt per day. The answer shows up right after.

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