# How to store data in JSON file in Node-RED

**URL:** <https://discourse.nodered.org/t/how-to-store-data-in-json-file-in-node-red/6480>\
**Category:** General\
**Created:** [6 January 2019 23:56 UTC](https://discourse.nodered.org/t/how-to-store-data-in-json-file-in-node-red/6480 "2019-01-06T23:56:57Z")\
**Posts on this page:** 1\
**Showing post:** 12

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**Author:** ![hazymat](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/hazymat/32/108159_2.png) [@hazymat](https://discourse.nodered.org/u/hazymat)\
**Post date:** [9 January 2019 22:11 UTC](https://discourse.nodered.org/t/how-to-store-data-in-json-file-in-node-red/6480/12 "2019-01-09T22:11:28Z")

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Thanks @zenofmud and @drmibell for the practical tips. Most useful.

Out of interest @drmibell, re your earlier post where you suggested a JSON file. That's what I originally envisaged. Sorry if this is a basic question, but would you literally create the file with a text editor to start with? If you wanted to update it programmatically (e.g. one item might be a stored lighting scene, and there may be an option on a control panel to overwrite an existing scene with new settings) - I'm guessing there's a good way to do that?

Or do we get into possible problems with concurrency? Perhaps it may be better to store all of the json in persistent storage? Hopefully I didn't misunderstand your point about using JSON file for static information about devices and a global variable for state information...

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