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json-autosave

v1.1.2

Published

Automatically save a JSON-serializable object.

Downloads

95

Readme

I have mutable state that must be kept after restarts.

I use…

json-autosave

  • Automatically save a JSON-serializable state on disk in the background.
  • Minimizes disk IO operations.
  • Resilient to process and system crashes (on journaling and COW file systems).
var autosave = require('json-autosave');
var stats = autosave('stats.json');

stats.data = { pageViews: 0 };

Interface

autosave(filename, options) returns a JsonSave object.

Options:

  • interval: how frequently (in milliseconds) we should ensure that the data is saved.
  • data: default data if it does not already exist.

save.data: mutable JS object that will be saved to JSON on disk automatically. You can set it to whatever you like or change any property it has. The only restriction is that it must be JSON-serializable.

save.setInterval(ms) changes the frequency with which we save the data.

save.stop() prevents saving data updates to disk.

save.start() resumes saving data to disk.