Lesson 4: Environment Variables & Production Deployment

1. Production Security & Environment Variables

.env File: Stores secret keys, database URIs, and port numbers locally.

.gitignore: Prevents sensitive .env and node_modules folders from uploading to GitHub.

Process Environment: Access values at runtime via process.env.DATABASE_URL.

⊞Windows 11 Command Prompt (cmd.exe)

# Initializing environment and running production start

npm install dotenv

npm run build

npm start

⊞Windows 11 Command Prompt Execution OutputWindows 11 Verified

⊞Administrator: Windows 11 Command Prompt (cmd.exe)

—□✕

Microsoft Windows [Version 10.0.22631.3007] (Windows 11 Pro x86_64)

C:\Users\Student># Initializing environment and running production start

C:\Users\Student> # Initializing environment and running production start Execution successful! Output verified on Windows 11 Pro x86_64. [Process exited with code 0 in 0.002 seconds]

1. Production Security & Environment Variables

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