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How to catch a missing index in a test, when your test table has 20 rows.

Here is a bug that no test suite catches. Someone adds a lookup by email. It works. Six months later the table has two million rows, that lookup has no index, and the endpoint takes four seconds.

  • Bug in test suite goes unnoticed
  • Lookup by email functions correctly
  • Test database with 20 rows hides index issue

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