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While Cloud Storage
is the recommended solution for reading and writing files in App Engine,
if your app only needs to write temporary files, you can use language-specific
methods to write files to a directory named /tmp.
All files in this directory are stored in the instance's RAM, therefore writing
to /tmp takes up system memory. In addition, files in the /tmp directory are
only available to the app instance that created the files. When the instance is
deleted, the temporary files are deleted.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Hard to understand","hardToUnderstand","thumb-down"],["Incorrect information or sample code","incorrectInformationOrSampleCode","thumb-down"],["Missing the information/samples I need","missingTheInformationSamplesINeed","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-21 UTC."],[[["\u003cp\u003eCloud Storage is recommended for reading and writing files in App Engine.\u003c/p\u003e\n"],["\u003cp\u003eTemporary files can be written to the \u003ccode\u003e/tmp\u003c/code\u003e directory using language-specific methods.\u003c/p\u003e\n"],["\u003cp\u003eFiles in \u003ccode\u003e/tmp\u003c/code\u003e are stored in the instance's RAM and consume system memory.\u003c/p\u003e\n"],["\u003cp\u003eTemporary files in \u003ccode\u003e/tmp\u003c/code\u003e are only accessible to the instance that created them and are deleted when the instance is deleted.\u003c/p\u003e\n"]]],[],null,[]]
