🗄️ Databases & Backend

ORM Migrations' Sneaky Habit: Hiding Indexes That Tank Your Queries

Everyone thought ORMs made databases foolproof. Turns out, they're just sweeping performance killers under the schema rug. Tiger SQL pulls back the curtain.

ERD diagram highlighting missing index on user_id foreign key in Orders table

⚡ Key Takeaways

  • ORM migrations hide missing indexes on foreign keys, leading to sequential scans and slow queries at scale.
  • Tiger SQL offers free, visual Postgres schema auditing with AI warnings—no more black-box databases.
  • Always verify indexes manually; history shows ORMs prioritize speed over performance reality.
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Originally reported by dev.to

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