Thread safe

Currently the Dictionary cache is not thread safe. You can replace the current code with the following to correct

`using System; using System.Collections.Concurrent; using System.Collections.Generic;

namespace DeviceDetectorNET.Cache { public class DictionaryCache : ICache { private static readonly Object LockObj = new Object(); private static ConcurrentDictionary<string,object> _staticCache = new ConcurrentDictionary<string, object>(); public bool Contains(string id) { return _staticCache !=null && _staticCache.Keys.Count > 0 && _staticCache.ContainsKey(id); } public bool Delete(string id) { object obj; _staticCache.TryRemove(id, out obj); return true; }

public object Fetch(string id)
    {
        return Contains(id) ? _staticCache[id] : null;
    }

public bool FlushAll()
    {
        _staticCache = new ConcurrentDictionary<string, object>();
        return true;
    }

public bool Save(string id, object data, int lifeTime = 0)
    {

            if (Contains(id))
            {
                _staticCache[id] = data;
            }
            else
            {
                _staticCache.TryAdd(id, data);
            }
            return true;

    }
}

}`

[totpero]

Hi @hugoqribeiro , The .NetCore repo is fork from this repo, is not maintained from us. Here is one pull request to port this library to core but is some issues if i do this: here

[totpero]

Hi @hugoqribeiro, this library now is also supported .net core if you want to use it.