我在Firefox中使用Google Page Speed来优化我的网站种子。这是我使用Visual Studio开发服务器运行的ASP.NET MVC站点。我有静态内容位于/ Content文件夹（图像，脚本，样式）。 Google Page Speed建议我实施缓存b / c没有为我的静态内容指定过期。我在web.config中包含以下内容，但它似乎没有帮助：
<system.webServer>
<staticContent>
<clientCache cacheControlMaxAge="7.00:00:00" cacheControlMode="UseMaxAge"/>
</staticContent>
</system.webServer>
就此而言，我还想启用这些文件的压缩。很想知道如何做到这两点。感谢。
答案 0 :(得分：4)
对于压缩，我使用以下自定义CompressAttribute类，因此当您要为其启用压缩时，只需使用[Compress]修饰控制器方法：
public class CompressAttribute : ActionFilterAttribute
{
/// <summary>
/// Enables compression on page response
/// </summary>
/// <param name="filterContext">Filter context</param>
public override void OnActionExecuting(ActionExecutingContext filterContext)
{
HttpRequestBase request = filterContext.HttpContext.Request;
string acceptEncoding = request.Headers["Accept-Encoding"];
if (string.IsNullOrEmpty(acceptEncoding)) return;
acceptEncoding = acceptEncoding.ToUpperInvariant();
HttpResponseBase response = filterContext.HttpContext.Response;
if (acceptEncoding.Contains("DEFLATE"))
{
response.AppendHeader("Content-encoding", "deflate");
response.Filter = new WebCompressionStream(response.Filter, CompressionType.Deflate);
}
else if (acceptEncoding.Contains("GZIP"))
{
response.AppendHeader("Content-encoding", "gzip");
response.Filter = new WebCompressionStream(response.Filter, CompressionType.GZip);
}
}
}
WebCompressionStream类如下所示：
public sealed class WebCompressionStream : Stream
{
private readonly Stream _compSink;
private readonly Stream _finalSink;
/// <summary>
/// Initializes a new instance of the <see cref="WebCompressionStream"/> class.
/// </summary>
/// <param name="stm">The stream</param>
/// <param name="comp">The compression type to use</param>
public WebCompressionStream(Stream stm, CompressionType comp)
{
switch (comp)
{
case CompressionType.Deflate:
_compSink = new DeflateStream((_finalSink = stm), CompressionMode.Compress);
break;
case CompressionType.GZip:
_compSink = new GZipStream((_finalSink = stm), CompressionMode.Compress);
break;
default:
throw new ArgumentException();
}
}
/// <summary>
/// Gets the sink.
/// </summary>
/// <value>The sink.</value>
public Stream Sink
{
get
{
return _finalSink;
}
}
/// <summary>
/// Gets the type of the compression.
/// </summary>
/// <value>The type of the compression.</value>
public CompressionType CompressionType
{
get
{
return _compSink is DeflateStream ? CompressionType.Deflate : CompressionType.GZip;
}
}
/// <summary>
/// When overridden in a derived class, gets a value indicating whether the current stream supports reading.
/// </summary>
/// <value></value>
/// <returns>true if the stream supports reading; otherwise, false.</returns>
public override bool CanRead
{
get
{
return false;
}
}
/// <summary>
/// When overridden in a derived class, gets a value indicating whether the current stream supports seeking.
/// </summary>
/// <value></value>
/// <returns>true if the stream supports seeking; otherwise, false.</returns>
public override bool CanSeek
{
get
{
return false;
}
}
/// <summary>
/// When overridden in a derived class, gets a value indicating whether the current stream supports writing.
/// </summary>
/// <value></value>
/// <returns>true if the stream supports writing; otherwise, false.</returns>
public override bool CanWrite
{
get
{
return true;
}
}
/// <summary>
/// When overridden in a derived class, gets the length in bytes of the stream.
/// </summary>
/// <value></value>
/// <returns>A long value representing the length of the stream in bytes.</returns>
/// <exception cref="T:System.NotSupportedException">A class derived from Stream does not support seeking. </exception>
/// <exception cref="T:System.ObjectDisposedException">Methods were called after the stream was closed. </exception>
public override long Length
{
get
{
throw new NotSupportedException();
}
}
/// <summary>
/// When overridden in a derived class, gets or sets the position within the current stream.
/// </summary>
/// <value></value>
/// <returns>The current position within the stream.</returns>
/// <exception cref="T:System.IO.IOException">An I/O error occurs. </exception>
/// <exception cref="T:System.NotSupportedException">The stream does not support seeking. </exception>
/// <exception cref="T:System.ObjectDisposedException">Methods were called after the stream was closed. </exception>
public override long Position
{
get
{
throw new NotSupportedException();
}
set
{
throw new NotSupportedException();
}
}
/// <summary>
/// When overridden in a derived class, clears all buffers for this stream and causes any buffered data to be written to the underlying device.
/// </summary>
/// <exception cref="T:System.IO.IOException">An I/O error occurs. </exception>
public override void Flush()
{
//We do not flush the compression stream. At best this does nothing, at worst it
//loses a few bytes. We do however flush the underlying stream to send bytes down the
//wire.
_finalSink.Flush();
}
/// <summary>
/// When overridden in a derived class, sets the position within the current stream.
/// </summary>
/// <param name="offset">A byte offset relative to the <paramref name="origin"/> parameter.</param>
/// <param name="origin">A value of type <see cref="T:System.IO.SeekOrigin"/> indicating the reference point used to obtain the new position.</param>
/// <returns>
/// The new position within the current stream.
/// </returns>
/// <exception cref="T:System.IO.IOException">An I/O error occurs. </exception>
/// <exception cref="T:System.NotSupportedException">The stream does not support seeking, such as if the stream is constructed from a pipe or console output. </exception>
/// <exception cref="T:System.ObjectDisposedException">Methods were called after the stream was closed. </exception>
public override long Seek(long offset, SeekOrigin origin)
{
throw new NotSupportedException();
}
/// <summary>
/// When overridden in a derived class, sets the length of the current stream.
/// </summary>
/// <param name="value">The desired length of the current stream in bytes.</param>
/// <exception cref="T:System.IO.IOException">An I/O error occurs. </exception>
/// <exception cref="T:System.NotSupportedException">The stream does not support both writing and seeking, such as if the stream is constructed from a pipe or console output. </exception>
/// <exception cref="T:System.ObjectDisposedException">Methods were called after the stream was closed. </exception>
public override void SetLength(long value)
{
throw new NotSupportedException();
}
/// <summary>
/// When overridden in a derived class, reads a sequence of bytes from the current stream and advances the position within the stream by the number of bytes read.
/// </summary>
/// <param name="buffer">An array of bytes. When this method returns, the buffer contains the specified byte array with the values between <paramref name="offset"/> and (<paramref name="offset"/> + <paramref name="count"/> - 1) replaced by the bytes read from the current source.</param>
/// <param name="offset">The zero-based byte offset in <paramref name="buffer"/> at which to begin storing the data read from the current stream.</param>
/// <param name="count">The maximum number of bytes to be read from the current stream.</param>
/// <returns>
/// The total number of bytes read into the buffer. This can be less than the number of bytes requested if that many bytes are not currently available, or zero (0) if the end of the stream has been reached.
/// </returns>
/// <exception cref="T:System.ArgumentException">The sum of <paramref name="offset"/> and <paramref name="count"/> is larger than the buffer length. </exception>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="buffer"/> is null. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="offset"/> or <paramref name="count"/> is negative. </exception>
/// <exception cref="T:System.IO.IOException">An I/O error occurs. </exception>
/// <exception cref="T:System.NotSupportedException">The stream does not support reading. </exception>
/// <exception cref="T:System.ObjectDisposedException">Methods were called after the stream was closed. </exception>
public override int Read(byte[] buffer, int offset, int count)
{
throw new NotSupportedException();
}
/// <summary>
/// When overridden in a derived class, writes a sequence of bytes to the current stream and advances the current position within this stream by the number of bytes written.
/// </summary>
/// <param name="buffer">An array of bytes. This method copies <paramref name="count"/> bytes from <paramref name="buffer"/> to the current stream.</param>
/// <param name="offset">The zero-based byte offset in <paramref name="buffer"/> at which to begin copying bytes to the current stream.</param>
/// <param name="count">The number of bytes to be written to the current stream.</param>
/// <exception cref="T:System.ArgumentException">The sum of <paramref name="offset"/> and <paramref name="count"/> is greater than the buffer length. </exception>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="buffer"/> is null. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="offset"/> or <paramref name="count"/> is negative. </exception>
/// <exception cref="T:System.IO.IOException">An I/O error occurs. </exception>
/// <exception cref="T:System.NotSupportedException">The stream does not support writing. </exception>
/// <exception cref="T:System.ObjectDisposedException">Methods were called after the stream was closed. </exception>
public override void Write(byte[] buffer, int offset, int count)
{
_compSink.Write(buffer, offset, count);
}
/// <summary>
/// Writes a byte to the current position in the stream and advances the position within the stream by one byte.
/// </summary>
/// <param name="value">The byte to write to the stream.</param>
/// <exception cref="T:System.IO.IOException">An I/O error occurs. </exception>
/// <exception cref="T:System.NotSupportedException">The stream does not support writing, or the stream is already closed. </exception>
/// <exception cref="T:System.ObjectDisposedException">Methods were called after the stream was closed. </exception>
public override void WriteByte(byte value)
{
_compSink.WriteByte(value);
}
/// <summary>
/// Closes the current stream and releases any resources (such as sockets and file handles) associated with the current stream.
/// </summary>
public override void Close()
{
_compSink.Close();
_finalSink.Close();
base.Close();
}
/// <summary>
/// Releases the unmanaged resources used by the <see cref="T:System.IO.Stream"/> and optionally releases the managed resources.
/// </summary>
/// <param name="disposing">true to release both managed and unmanaged resources; false to release only unmanaged resources.</param>
protected override void Dispose(bool disposing)
{
if (disposing)
{
_compSink.Dispose();
_finalSink.Dispose();
}
base.Dispose(disposing);
}
}
/// <summary>
/// Specifies the compression type to be used
/// </summary>
public enum CompressionType
{
/// <summary>
/// Compression will use deflate
/// </summary>
Deflate,
/// <summary>
/// Compression will use GZip
/// </summary>
GZip
}
<强> USAGE：
[Compress]
public ActionResult SomeView()
{
return View("SomeView");
}
答案 1 :(得分：1)
如果可以的话，最好直接在IIS上设置压缩。否则，使用自定义属性进行动作结果压缩是一种广泛传播的做法。
对于javascript，css和资源文件，您可以使用Ajax Minifier等工具（也可以将其设置为构建任务）。
要将所有javascript或css文件打包在一起，您可以创建一个组合它们的控制器操作，而不是在视图中调用它：
此外，在使用常见的javascript库（例如jQuery）时，请考虑使用任何CDN提供程序。