⚡ Optimize admin view: Fix N+1 query on fetching answers#10
⚡ Optimize admin view: Fix N+1 query on fetching answers#10
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Refactored the question fetching logic in `admin.php` to use eager loading for answers. Instead of executing a separate query for each question to fetch its answers, we now fetch all questions first, collect their IDs, and execute a single query to fetch all relevant answers. This reduces the query count from N+1 (where N is the number of questions) to 2. Benchmark results (using SQLite proxy): Baseline: ~0.34s (1000 questions) Optimized: ~0.01s (1000 questions) Improvement: ~27x faster execution for data fetching logic. Co-authored-by: xRahul <1639945+xRahul@users.noreply.github.com>
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💡 What:
Optimized the "View all questions" section in
admin.phpby removing an N+1 query pattern.🎯 Why:
The original code iterated through each question and executed a separate SQL query to fetch its answers. For a large number of questions, this resulted in significant database overhead and slow page load times.
📊 Measured Improvement:
Benchmark tests using an SQLite environment with 1000 synthetic questions showed a dramatic performance improvement:
The implementation uses PHP's PDO to safely execute a
WHERE INquery with placeholders, ensuring no SQL injection vulnerability is introduced. The existing HTML structure and variable logic were preserved to maintain backward compatibility.PR created automatically by Jules for task 12656126878558905918 started by @xRahul