Normalization vs Performance
Normalization reduces redundancy but increases JOIN complexity. Denormalization improves read speed at the cost of consistency. Choose based on your read/write ratio and data size.
MySQL
Intermediate
4 min read
Normalization vs Performance Trade-offs
Example
-- Normalized: requires JOIN for every order query
SELECT o.id, c.name, c.email FROM orders o JOIN customers c ON c.id = o.customer_id;
-- Denormalized: customer_name stored on orders (faster reads, harder to update)
SELECT id, customer_name, customer_email FROM orders; Pro Tip
Start normalized and denormalize only where you have measured a performance bottleneck.