I'm currently working with Node.JS and Express.js, and I am facing a challenge of sharing a variable between different modules. The variable in question is a pool of MySQL connections, which initializes 3 connections at the beginning of Node.js execution. My goal is for other modules to utilize these existing connections without creating additional connection pools.
Is there a solution available for this situation?
Thank you
There are a couple of ways to handle this:
global.MySQL_pool = .... This will allow you to access it from anywhere in your code by simply using MySQL_pool.Another approach is to pass the variable as a parameter to each module where it is needed, like so:
var MySQL_pool = ... var my_db_module = require('./db')(MySQL_pool);
The db.js file would look something like this:
module.exports = function (pool) {
// In this function, you can now access the MySQL pool using the pool parameter
}
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