在繁忙的mysql服务器上,MySQLTuner 1.2.0总是建议添加query_cache_size,不管我如何增加值(我尝试了512 up )。另一方面,它警告说:
Increasing the query_cache size over 128M may reduce performance
以下是最后的结果:
>> MySQLTuner 1.2.0 - Major Hayden <major@mhtx.net>
>> Bug reports, feature requests, and downloads at http://mysqltu
在控制器类中,我
using Microsoft.Extensions.Caching.Memory;
private IMemoryCache _cache;
private readonly MemoryCacheEntryOptions CacheEntryOptions = new MemoryCacheEntryOptions()
.SetSize(1)
// Keep in cache for this time
.SetAbsoluteExpiration(TimeSpan.FromSeconds(CacheExpiryInSeconds));
在Star
在XBAP下载的最后,我得到了下面的错误跟踪。我已经尝试使用Procmon和VS2013-debugger找出缺少了什么。然而,到目前为止我还没有成功。有什么提示吗?
ERROR DETAILS
Following errors were detected during this operation.
* [23.05.2014 12:55:03] System.IO.FileNotFoundException
- The system cannot find the file specified. (Exception from HRESULT: 0x8007
我正在尝试通过在Windows7 (64位)上运行的Delphi XE7应用程序中的FireDAC来加密/解密SQLite数据库。
代码如下所示:
Procedure TMain.ActionBtnClick(Sender: TObject);
Begin
If ActionBtn.Caption = 'Encrypt' Then
Begin
SetPassword;
FDSQLiteSecurity.SetPassword;
End
Else
FDSQLiteSecurity.RemovePassword;
SetStatus;
End;
Pr
我有以下情况:
Activity1
public class Activity1 extends Activity{
ImageUtils.setArt(bitmap);
}
Activity2
public class Activity2 extends Activity{
Bitmap b= ImageUtils.getArt();
}
ImageUtils
public class ImageUtils{
private static Bitmap mArtWork;
public static Bitmap getArt(){
retur