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POEfficient way to expose generated files in the server?
 

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  1. POEfficient way to expose generated files in the server?
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    <p>I'm working on an application running on JBoss5.1, JEE5, JSF2, Spring3.0, Icefaces2.0, HTML and Jquery1.8. <br><br>I have a requirement of generating files on the fly for customers to download. When a file is generated, currently I'm streaming the file content as bytes on to the JSF page and using <code>&lt;ice:outputResource&gt;</code> to show a link to download. This works fine for smaller size files. As file size increases, this is not a good solution as I'm running into <code>OutOfMemoryError</code> issues because application JVM has to bear the burden of taking file content into the Heap and then funnel through the application. <br><br>What I would like to do is to provide the generated files as direct links so that they can be served by the web contained through HTTP. I have a constraint of doing this in a secure environment so that user is authenticated before he can generate and see the link. So, I plan to generate file into WEB-INF directory and delete file as soon as user downloads, effectively making WEB-INF to contain only files currently being viewed by customers. What I'm not sure is <strong>how JBoss server handles these files in terms of caching and if affects server performance</strong>. Also, I appreciate if there are any alternative approaches to my problem. </p> <p>I believe I described my problem clearly, if not please let me know. Thanks in advance for your time and assistance.</p> <p>PS - I can even create files outside WEB-INF and still make them secure.</p>
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    1. COyou shouldn't be generating the files into WEB-INF, you should use the system temp directory (or some configured working directory for your application).
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    2. COdepending on how you generate the files, you may not even need temp files, you could stream them directly to the client.
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    3. CO@jtahlborn Thanks, yes that's alright. I can even create outside WEB-INF and still make them secure. I'm generating files in CSV,PDF and XLS using Java FileOutputStream. When you say stream directly to the client, can you elaborate please?
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