When Not to Use Proplists

Proplists are not appropriate for:

• Large collections: Anything over ~50 entries should probably be a map
• Frequent updates: Use maps or records
• Schema-validated data: Use records with well-defined fields
• High-performance lookups: Use maps, ETS tables, or process dictionaries (though the last should be used with the sort of caution normally reserved for handling radioactive materials)
• Data with complex types as keys: Use maps, which support any fully ground term as a key