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What are Environment variables in Node.js?Įnvironment variables are pieces of information which are loaded into the process object for further use. This provides easier application management because we can update any Ports or expired API keys directly without touching the code. Many hosting providers have built-in support to set environment variable right from the dashboard. Printenv command shows all Unix OS environment variables. The operating system has also a set of environment variables which provides useful information globally. Here is the tutorial to use environment variables in a secure way.Įnvironment variables are global variables which are available to use under env object of global process object in Node.js. Summary:Environment variables are very useful to store sensitive information in Node.js.
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