You need to store product specifications that vary by category (laptops have RAM/CPU; clothes have size/color). What's the best database design?

Option 1 (JSONB — recommended for PostgreSQL): ALTER TABLE products ADD COLUMN specs JSONB. Store laptop: {ram_gb:16, cpu:'i7', storage_tb:1}. Store clothes: {size:'XL', color:'red', material:'cotton'}. Create GIN index: CREATE INDEX ON products USING GIN(specs). Query: WHERE specs @> '{"ram_gb": 16}'. Pros: flexible, queryable, indexed. Option 2 (EAV — avoid): product_attributes(product_id, key,