Generate realistic fake data for testing
Testing applications with real user data is often risky or completely illegal due to privacy regulations like GDPR and CCPA.
If developers use a raw dump of the production database in a local or staging environment, any security compromise in those lower environments leads to a massive breach of Personally Identifiable Information (PII).
When building a new app, a database with zero rows makes it impossible to design the UI, test pagination, or measure query performance.
Engineers write "seed scripts" that utilize mock data generators to instantly populate the development database with tens of thousands of fake users, products, and transactions. This allows the team to simulate a high-load production environment on day one.
Why is it considered a bad practice to test new features using a copy of the production database?
