Method should_cache_query

src/cache/enhanced_statement_pool.rs:167–196

Determine if a query should be cached based on its pattern and hints

(&self, pattern: &QueryPattern, hints: &OptimizationHints)

    /// Determine if a query should be cached based on its pattern and hints
    fn should_cache_query(&self, pattern: &QueryPattern, hints: &OptimizationHints) -> bool {
        use crate::query::{QueryPattern, QueryComplexity};
        
        match pattern {
            // Always cache these patterns - high reuse potential
            QueryPattern::SimpleSelect | 
            QueryPattern::SimpleInsert | 
            QueryPattern::SimpleUpdate | 
            QueryPattern::SimpleDelete |
            QueryPattern::BatchInsert |
            QueryPattern::CountQuery |
            QueryPattern::ExistsQuery |
            QueryPattern::MaxMinQuery => true,

            // Cache medium complexity queries if they use prepared statements
            QueryPattern::GroupByAggregation |
            QueryPattern::OrderByLimit |
            QueryPattern::JoinWithWhere |
            QueryPattern::SubqueryExists => {
                hints.use_prepared_statement
            },

            // Only cache complex queries if explicitly recommended
            QueryPattern::NestedSubquery |
            QueryPattern::UnionQuery |
            QueryPattern::ComplexQuery => {
                hints.cache_result && hints.complexity != QueryComplexity::Complex
            },
        }
    }

    /// Extract enhanced metadata including optimization information
    fn extract_enhanced_metadata(