⚡ Bolt: Optimize completed books count query #103
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Replaces in-memory filtering of all completed books with a direct database COUNT query. Uses date range comparison for sargability and includes input validation. - Adds GetCountByCompletionYearAsync to IBookRepository - Implements efficient count query in BookRepository - Updates StatsService to use new repository method
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💡 What: Optimized
StatsService.GetBooksCompletedInYearAsyncto use a direct databaseCOUNTquery instead of loading all completed books into memory.🎯 Why: The previous implementation loaded all completed books and filtered them in memory, which is an O(N) operation that scales poorly with the number of books and consumes unnecessary memory and database IO.
📊 Impact: Significantly reduces memory usage and database traffic, changing the operation from O(N) data transfer to O(1).
🔬 Measurement: Verify by inspecting the generated SQL query (should be a single
SELECT COUNT(*) ...) and checking memory allocation during statistics generation.PR created automatically by Jules for task 4698274501801566731 started by @Tr1sma