public static class CompressionExtensions
{
    /// <summary>
    /// Compresses the specified data.
    /// </summary>
    /// <param name="data">The data.</param>
    /// <returns></returns>
    public static byte[] Compress(this byte[] data)
    {
        using (MemoryStream output = new MemoryStream())
        {
            using (DeflateStream def = new DeflateStream(output, CompressionMode.Compress))
            {
                def.Write(data, 0, data.Length);
            }
            return output.ToArray();
        }
    }
    /// <summary>
    /// Decompresses the specified data.
    /// </summary>
    /// <param name="data">The data.</param>
    /// <returns></returns>
    public static byte[] Decompress(this byte[] data)
    {
        using (MemoryStream input = new MemoryStream())
        {
            input.Write(data, 0, data.Length);
            input.Position = 0;
            using (DeflateStream def = new DeflateStream(input, CompressionMode.Decompress))
            {
                using (MemoryStream output = new MemoryStream())
                {
                    byte[] buff = new byte[64];
                    int read = -1;
                    read = def.Read(buff, 0, buff.Length);
                    while (read > 0)
                    {
                        output.Write(buff, 0, read);
                        read = def.Read(buff, 0, buff.Length);
                    }
                    def.Close();
                    return output.ToArray();
                }
            }
        }
    }
}

public static class CacheExtensions
{
    /// <summary>
    /// Compress and Set Object in cache.
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="cache">The cache.</param>
    /// <param name="Key">The key.</param>
    /// <param name="o">The o.</param>
    public static void SetInCache<T>(this Cache cache, String Key, T o)
    {
        BinaryFormatter bf = new BinaryFormatter();
        using (MemoryStream ms = new MemoryStream())
        {
            bf.Serialize(ms, o);
            byte[] bts = ms.ToArray();
            cache[Key] = bts.Compress();
        }
    }
    /// <summary>
    /// Decompress and Get Object from cache.
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="cache">The cache.</param>
    /// <param name="Key">The key.</param>
    /// <returns></returns>
    public static T GetFromCache<T>(this Cache cache, String Key)
    {
        if (cache[Key] == null)
            return default(T);
        byte[] bts = (byte[])cache[Key];
        byte[] uncompressed = bts.Decompress();
        BinaryFormatter bf = new BinaryFormatter();
        using (MemoryStream ms = new MemoryStream(uncompressed))
        {
            T o = (T)bf.Deserialize(ms);
            return o;
        }
    }
}

public static class SessionExtensions
{
    /// <summary>
    /// Compress and Set Object in Session.
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="session">The session.</param>
    /// <param name="Key">The key.</param>
    /// <param name="o">The o.</param>
    public static void SetInSession<T>(this HttpSessionState session, String Key, T o)
    {
        BinaryFormatter bf = new BinaryFormatter();
        using (MemoryStream ms = new MemoryStream())
        {
            bf.Serialize(ms, o);
            byte[] bts = ms.ToArray();
            session[Key] = bts.Compress();
        }
    }
    /// <summary>
    /// Decompress and Get Object from Session.
    /// </summary>
    /// <typeparam name="T"></typeparam>
    /// <param name="session">The session.</param>
    /// <param name="Key">The key.</param>
    /// <returns></returns>
    public static T GetFromSession<T>(this HttpSessionState session, String Key)
    {
        byte[] bts = (byte[])session[Key];
        byte[] uncompressed = bts.Decompress();
        BinaryFormatter bf = new BinaryFormatter();
        using (MemoryStream ms = new MemoryStream(uncompressed))
        {
            T o = (T)bf.Deserialize(ms);
            return o;
        }
    }
}