MyCache: Distributed caching engine for an ASP.NET web farm - Part II: The internal details

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using Microsoft.Practices.EnterpriseLibrary.Caching;

namespace MyCacheServiceLib
{
    /// <summary>
    /// Manages locking functionality
    /// </summary>
    class LockManager
    {
        ICacheManager cacheManager;

        public LockManager(ICacheManager cacheManager)
        {
            this.cacheManager = cacheManager;
        }
     
        /// <summary>
        /// Releases lock for the speficied Key
        /// </summary>
        /// <param name="Key"></param>
        public void ReleaseLock(string Key)
        {
            Key = BuildKeyForLock(Key);
            if (cacheManager.Contains(Key))
            {
                cacheManager.Remove(Key);
            }
        }

        /// <summary>
        /// Obtains lock for the specified Key
        /// </summary>
        /// <param name="Key"></param>
        /// <returns></returns>
        public bool SetLock(string Key)
        {
            Key = BuildKeyForLock(Key);
            if (cacheManager.Contains(Key)) return false;

            cacheManager.Add(Key, Key);
            return true;
        }

    
        /// <summary>
        /// Builds Key for locking an object in Cache
        /// </summary>
        /// <param name="Key"></param>
        /// <returns></returns>
        private string BuildKeyForLock(string Key)
        {
            Key = string.Format("Lock_{0}", Key);
            return Key;
        }
    }
}