Lovable·Fixperformanceintermediate

Lovable App Database Queries Are Slow

Quick Answer

Missing database indexes on frequently queried columns. Without indexes, Supabase scans every row for every query. Start with "Add indexes to key columns" before making broader code changes.

You're in the right place if...

!Pages with data take 3+ seconds to load
!List pages are especially slow
!Gets slower as more data is added

Why this happens

Missing database indexes on frequently queried columns. Without indexes, Supabase scans every row for every query.

Fix

Add indexes to key columns

Run this in Supabase SQL Editor — replace with your actual table and column names:

-- Add index on columns you filter/sort by
CREATE INDEX idx_posts_created_at ON posts(created_at DESC);
CREATE INDEX idx_users_email ON users(email);

Tell Lovable to optimize

Ask Lovable to add pagination and indexes:

Copy this prompt

Database queries are slow. Please add proper indexes to all columns used in WHERE clauses and ORDER BY statements. Also add pagination (20 items per page) to all list views.

Prevent this next time

For any table that will have more than 100 rows, add indexes on columns you filter or sort by. Always paginate list views.