c# - ASP.NET MVC and FileResult caching -


i have such simple code:

// cache disabled  [outputcache(nostore = true, duration = 0)] public async task<actionresult> getvideo(string path) {                 byte[] data = await _fileservice.getfileasync(path);                             if (data == null)         return httpnotfound();      return file(data, "video/mp4"); }

this code simple: retrieves file's content byte array , sends client. have web page contains video tags. of tags use getvideo source. each video 400-500 mb. after page ready w3wp.exe in task manager takes 3-4 gb ram , doesn't release memory. wrote disable resutl caching outputcacheattribute. problem doesn't hide in method getfileasync because when replace line 

byte[] data = await _fileservice.getfileasync(path);

with line 

byte[] data = system.io.file.readallbytes(server.mappath(path));

this problem still exists. maybe knows how release memory after sending bytes client?


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