Windsurf performance

Cascade Generated Inefficient Database Query

Database queries are extremely slow after Cascade generated new data access code. The application page load takes 30+ seconds where it used to take 2 seconds. Query execution plans show full table scans or missing indexes.

Cascade likely generated queries without considering query optimization or database structure.

Error Messages You Might See

Query took 45000ms to complete Table scan on users table Missing index for WHERE clause Slow query detected
Query took 45000ms to completeTable scan on users tableMissing index for WHERE clauseSlow query detected

Common Causes

  1. Cascade generated LIKE '%pattern%' query causing full table scan instead of indexed search
  2. Missing WHERE clause conditions allowing unnecessary data retrieval
  3. Cascade didn't add database indexes for frequently filtered columns
  4. Query returns unnecessary columns or related entities due to lazy loading

How to Fix It

Analyze query performance with EXPLAIN PLAN or database profiling. Add indexes to filtered columns. Optimize WHERE clauses to filter early. Use SELECT with specific columns instead of *. Avoid LIKE '%pattern%' on large tables. Consider query caching or denormalization for complex reports.

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Frequently Asked Questions

How do I find slow queries?

Enable query logging in database: slow_query_log=1 in MySQL. Check application logs if query timing is logged.

What queries benefit from indexes?

Columns used in WHERE, JOIN, ORDER BY, and GROUP BY clauses. Profile first - don't blindly add indexes.

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