Custom Settings vs. Custom Metadata
1. What Are Custom Settings?
Custom Settings in Salesforce function like custom objects but are optimized for storing reference or configuration data that can be accessed efficiently in Apex without requiring SOQL queries.
Types of Custom Settings:
- List Custom Settings: Stores static data accessible to all users in the organization.
- Hierarchy Custom Settings: Provides user- or profile-specific settings.
Key Features of Custom Settings:
✅ No SOQL required (improves performance)
✅ Supports user-specific or profile-specific configurations
✅ Data is cached, ensuring faster access
🚫 Not deployable via metadata API (requires Data Loader or manual data migration)
When to Use Custom Settings?
- When you need user-specific or profile-specific configurations
- To store frequently accessed org-wide settings
- To improve performance by reducing SOQL queries
2. What Is Custom Metadata?
Custom Metadata is similar to Custom Settings but is stored as metadata rather than data records. This makes it deployable across environments and useful for application configurations.
Key Features of Custom Metadata:
✅ Deployable and packageable like other metadata components
✅ No SOQL required (improves performance)
✅ Data is stored as metadata (does not count against org storage limits)
✅ Can be referenced in validation rules, flows, and formulas
🚫 Does not support hierarchy-based configurations
When to Use Custom Metadata?
- When you need deployable configurations across multiple orgs
- To store reference data that should be included in managed packages
- To replace hardcoded values in Apex, flows, or validation rules
3. Custom Settings vs. Custom Metadata: A Quick Comparison
4. Choosing the Right One for Your Use Case
- If you need user-specific settings, go with Custom Settings (Hierarchy Type).
- If you need deployable configurations, Custom Metadata is the better choice.
- If you need faster access and don't require deployment, Custom Settings are more efficient.
- If you want to reference data in validation rules or flows, only Custom Metadata supports this.
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