configuration-guide
Common configuration patterns, best practices, and troubleshooting for Render deployments.
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Content
# Render Configuration Guide
Common configuration patterns, best practices, and troubleshooting for Render deployments.
## Environment Variables
### Required vs Optional Variables
**Always declare ALL environment variables in render.yaml**, even if values are provided by user later.
**Three categories:**
1. **Configuration values** (hardcoded):
```yaml
envVars:
- key: NODE_ENV
value: production
- key: LOG_LEVEL
value: info
- key: API_URL
value: https://api.example.com
```
2. **Secrets** (user provides):
```yaml
envVars:
- key: JWT_SECRET
sync: false
- key: STRI
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