StackOverflow2013

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copied!<h3>Native code vs Managed Code</h3> <p>IIS would use native code for serving static files and likely employs some aggressive in-memory caching to achieve its performance.</p> <p>As ServiceStack is a .NET library that code is writing directly to ASP.NET's response stream so its harder to get any faster at streaming a file in managed .NET code. You could further increase performance by loading the file into memory and writing raw bytes instead.</p> <h3>Take advantage of HTTP Caching</h3> <p>Which is why if you have to do it managed code you should give your best efforts at taking advantage of HTTP Caching which is what we do in our <a href="https://github.com/ServiceStack/ServiceStack/blob/master/src/ServiceStack/WebHost.EndPoints/Support/StaticFileHandler.cs" rel="nofollow">StaticFileHandler</a> - i.e. what ServiceStack uses to serve its static content, e.g css/js/html pages.</p> <h3>Register a Raw HttpHandler</h3> <p>Although ServiceStack's request pipeline is heavily optimized (i.e. doesn't add much overhead) you can still by-pass it by registering your own custom <code>IHttpHandler</code> and handle the raw ASP.NET request yourself - this will be the fastest option in .NET code, e.g:</p> <pre><code>SetConfig(new EndpointHostConfig { RawHttpHandlers = { MiniProfilerHandler.MatchesRequest }, }); </code></pre> <p>This is what the built-in MiniProfiler uses to serve its static content. <a href="https://github.com/ServiceStack/ServiceStack/blob/master/src/ServiceStack/MiniProfiler/UI/MiniProfilerHandler.cs#L21" rel="nofollow">MatchesRequest</a> just takes a <code>IHttpRequest</code> to work out if it should handle the request (by returning a instance of IHttpHandler) or not (return null):</p> <pre><code>public static IHttpHandler MatchesRequest(IHttpRequest request) { var file = Path.GetFileNameWithoutExtension(request.PathInfo); return file != null && file.StartsWith("ss-") ? new MiniProfilerHandler() : null; } </code></pre> <p>Other than that, the stand-alone version of ServiceStack (i.e. HttpListener host) should provide better raw thoughput than ASP.NET.</p>

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