ApexIntermediatedescribedynamicschema
Use SObject describe caching for dynamic Apex UIs
Real World Scenario
Admin-configured field display LWC calls describe on every render causing CPU spikes.
Expected Answer
• Cache Schema.getGlobalDescribe or per-object describe in transaction static
• Platform cache for rarely changing object metadata
• Request only needed describe fields not full describe
• Custom Metadata driving display config reducing describe need
• Invalidate cache on metadata deploy via version key
• Monitor describe call count in hot endpoints
Follow-Up Questions & Answers
Click to expand — each follow-up includes a direct, interview-ready answer
Stay within limits by: Cache Schema.getGlobalDescribe or per-object describe in transaction static. Bulkify everything — never query or DML in loops. Request only needed describe fields not full describe. Describe calls add up—cache aggressively in dynamic UI services. Balance speed of delivery with maintainability.
Architect Perspective
Describe calls add up—cache aggressively in dynamic UI services.