Where to store temporary files in a java web application? -

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i'm developing java/spring-mvc web app using scheduling system generate csv files send via e mail.

my first idea generate these files locally in server , send them recipients, have doubt. store temp files?

i deploy application war, know there problems.

is bad idea create temporary directory in web-inf directory? alternative serialize these files , store them in database table.

what's suggestion? best practice?

i left on jvm, i.e. use java.io.tmpdir system property. create directory in tmp dir (new file(system.getproperty("java.io.tmpdir")).mkdir()) or file in tmp directory (file.createtempfile("name", ".csv")).
application running on tomcat, tmp dir <catalina_home_directory>/temp.


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