如何在节点js中永远设置一个值

Question

I'm new in node js. I want to save an id in a global variable. I need that in many functions. But when server restart the variable get empty. Is there any way to save my required value for a long time even when server restart?

Answer 1

You can store variables as environmental variables, so that they can load each time you restart your server. or you can have them in file system or in database.

1. Environment variables can be set command line as node.js process variable and read them anywhere in you node code with process.env.[variable_name]
2. You can write your variables in file and read them using FS module
3. Or you can have you variables in database as well.

Answer 2

You can save the variable using Store-js

To save the value using store js npm install store-js;

 import store from 'store-js'; store.set('variable', value);//for saving value store.get('variable');// for getting of the value