Created
October 8, 2025 23:31
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Environment Variables Template - Comprehensive .env template for various tech stacks
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| # ======================================== | |
| # Environment Variables Template | |
| # ======================================== | |
| # Copy this file to your project as .env | |
| # and fill in your actual values | |
| # | |
| # NEVER commit .env files to version control! | |
| # Add .env to your .gitignore | |
| # ======================================== | |
| # Application Configuration | |
| # ======================================== | |
| NODE_ENV=development | |
| PORT=3000 | |
| APP_NAME=my-app | |
| APP_URL=http://localhost:3000 | |
| # ======================================== | |
| # Database Configuration | |
| # ======================================== | |
| # PostgreSQL | |
| DATABASE_URL=postgresql://user:password@localhost:5432/database_name | |
| DB_HOST=localhost | |
| DB_PORT=5432 | |
| DB_NAME=database_name | |
| DB_USER=postgres | |
| DB_PASSWORD=your_password_here | |
| # MySQL | |
| # DATABASE_URL=mysql://user:password@localhost:3306/database_name | |
| # MongoDB | |
| # MONGODB_URI=mongodb://localhost:27017/database_name | |
| # ======================================== | |
| # Redis Configuration | |
| # ======================================== | |
| REDIS_URL=redis://localhost:6379 | |
| REDIS_HOST=localhost | |
| REDIS_PORT=6379 | |
| # REDIS_PASSWORD=your_redis_password | |
| # ======================================== | |
| # Authentication & Security | |
| # ======================================== | |
| # JWT | |
| JWT_SECRET=your_jwt_secret_key_here_min_32_chars | |
| JWT_EXPIRY=7d | |
| JWT_REFRESH_SECRET=your_jwt_refresh_secret_here | |
| JWT_REFRESH_EXPIRY=30d | |
| # Session | |
| SESSION_SECRET=your_session_secret_here | |
| # Encryption | |
| ENCRYPTION_KEY=your_encryption_key_here | |
| # ======================================== | |
| # External Services | |
| # ======================================== | |
| # AWS | |
| AWS_REGION=us-east-1 | |
| AWS_ACCESS_KEY_ID=your_aws_access_key | |
| AWS_SECRET_ACCESS_KEY=your_aws_secret_key | |
| AWS_S3_BUCKET=your-bucket-name | |
| # Cloudflare | |
| # CLOUDFLARE_API_TOKEN=your_cloudflare_token | |
| # CLOUDFLARE_ZONE_ID=your_zone_id | |
| # SendGrid / Email | |
| # SENDGRID_API_KEY=your_sendgrid_api_key | |
| # SMTP_HOST=smtp.gmail.com | |
| # SMTP_PORT=587 | |
| # [email protected] | |
| # SMTP_PASSWORD=your_app_password | |
| # Stripe | |
| # STRIPE_SECRET_KEY=sk_test_your_stripe_secret | |
| # STRIPE_PUBLIC_KEY=pk_test_your_stripe_public | |
| # STRIPE_WEBHOOK_SECRET=whsec_your_webhook_secret | |
| # Twilio | |
| # TWILIO_ACCOUNT_SID=your_account_sid | |
| # TWILIO_AUTH_TOKEN=your_auth_token | |
| # TWILIO_PHONE_NUMBER=+1234567890 | |
| # ======================================== | |
| # OAuth / Social Login | |
| # ======================================== | |
| # GOOGLE_CLIENT_ID=your_google_client_id | |
| # GOOGLE_CLIENT_SECRET=your_google_client_secret | |
| # GOOGLE_CALLBACK_URL=http://localhost:3000/auth/google/callback | |
| # GitHub | |
| # GITHUB_CLIENT_ID=your_github_client_id | |
| # GITHUB_CLIENT_SECRET=your_github_client_secret | |
| # GITHUB_CALLBACK_URL=http://localhost:3000/auth/github/callback | |
| # FACEBOOK_APP_ID=your_facebook_app_id | |
| # FACEBOOK_APP_SECRET=your_facebook_app_secret | |
| # ======================================== | |
| # API Keys & Third Party Services | |
| # ======================================== | |
| # OpenAI | |
| # OPENAI_API_KEY=sk-your_openai_api_key | |
| # Anthropic (Claude) | |
| # ANTHROPIC_API_KEY=sk-ant-your_anthropic_key | |
| # Analytics | |
| # GOOGLE_ANALYTICS_ID=G-XXXXXXXXXX | |
| # MIXPANEL_TOKEN=your_mixpanel_token | |
| # Monitoring & Error Tracking | |
| # SENTRY_DSN=your_sentry_dsn | |
| # SENTRY_ENVIRONMENT=development | |
| # ======================================== | |
| # Feature Flags | |
| # ======================================== | |
| ENABLE_FEATURE_X=false | |
| ENABLE_DEBUG_LOGGING=true | |
| ENABLE_CORS=true | |
| # ======================================== | |
| # URLs & Endpoints | |
| # ======================================== | |
| API_URL=http://localhost:3000/api | |
| FRONTEND_URL=http://localhost:3001 | |
| WEBHOOK_URL=http://localhost:3000/webhooks | |
| # ======================================== | |
| # Rate Limiting | |
| # ======================================== | |
| RATE_LIMIT_WINDOW=15m | |
| RATE_LIMIT_MAX_REQUESTS=100 | |
| # ======================================== | |
| # File Upload | |
| # ======================================== | |
| MAX_FILE_SIZE=10485760 | |
| UPLOAD_DIR=./uploads | |
| # ======================================== | |
| # Logging | |
| # ======================================== | |
| LOG_LEVEL=debug | |
| LOG_FORMAT=json | |
| # ======================================== | |
| # Mobile / React Native | |
| # ======================================== | |
| # Expo | |
| # EXPO_PUBLIC_API_URL=http://localhost:3000/api | |
| # EXPO_PUBLIC_CLERK_PUBLISHABLE_KEY=pk_test_xxx | |
| # ======================================== | |
| # Elixir / Phoenix Specific | |
| # ======================================== | |
| # SECRET_KEY_BASE=your_secret_key_base_min_64_chars | |
| # PHX_HOST=localhost | |
| # PHX_PORT=4000 | |
| # ======================================== | |
| # Python / Django Specific | |
| # ======================================== | |
| # SECRET_KEY=your_django_secret_key | |
| # DEBUG=True | |
| # ALLOWED_HOSTS=localhost,127.0.0.1 | |
| # ======================================== | |
| # Ruby / Rails Specific | |
| # ======================================== | |
| # RAILS_ENV=development | |
| # RAILS_MASTER_KEY=your_rails_master_key | |
| # ======================================== | |
| # Notes | |
| # ======================================== | |
| # • Generate secure secrets: openssl rand -base64 32 | |
| # • Never commit this file with real values | |
| # • Use .env.example for sharing structure | |
| # • Consider using 1Password CLI for secrets management: | |
| # op inject -i .env.template -o .env | |
| # • For production, use environment variable management: | |
| # - Heroku Config Vars | |
| # - AWS Secrets Manager | |
| # - Vercel Environment Variables | |
| # - Railway Variables |
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