Class: CodeToQuery::Performance::Optimizer

Inherits:
Object
  • Object
show all
Defined in:
lib/code_to_query/performance/optimizer.rb

Overview

Query optimization and performance analysis

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ Optimizer

Returns a new instance of Optimizer.



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# File 'lib/code_to_query/performance/optimizer.rb', line 9

def initialize(config)
  @config = config
  @query_stats = {}
end

Instance Method Details

#optimize_query(sql, intent = {}) ⇒ Object

Analyze and optimize a query before execution



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# File 'lib/code_to_query/performance/optimizer.rb', line 15

def optimize_query(sql, intent = {})
  start_time = Time.now

  analysis = analyze_query(sql, intent)
  optimized_sql = apply_optimizations(sql, analysis)

  optimization_time = Time.now - start_time

  {
    original_sql: sql,
    optimized_sql: optimized_sql,
    analysis: analysis,
    optimization_time: optimization_time,
    recommendations: generate_recommendations(analysis)
  }
end

#performance_report ⇒ Object

Get performance insights



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# File 'lib/code_to_query/performance/optimizer.rb', line 74

def performance_report
  {
    total_queries: @query_stats.size,
    most_frequent: most_frequent_queries,
    slowest: slowest_queries,
    fastest: fastest_queries,
    recommendations: global_recommendations
  }
end

#track_query_performance(sql, execution_time, result_count = 0) ⇒ Object

Performance monitoring for executed queries



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# File 'lib/code_to_query/performance/optimizer.rb', line 33

def track_query_performance(sql, execution_time, result_count = 0)
  query_hash = Digest::SHA256.hexdigest(sql)

  @query_stats[query_hash] ||= {
    sql: sql,
    execution_count: 0,
    total_time: 0.0,
    min_time: Float::INFINITY,
    max_time: 0.0,
    avg_time: 0.0,
    last_executed: nil,
    result_counts: []
  }

  stats = @query_stats[query_hash]
  prev_count = stats[:execution_count]
  prev_total = stats[:total_time]
  prev_avg = prev_count.positive? ? (prev_total / prev_count) : 0.0

  stats[:execution_count] += 1
  stats[:total_time] += execution_time
  stats[:min_time] = [stats[:min_time], execution_time].min
  stats[:max_time] = [stats[:max_time], execution_time].max
  stats[:avg_time] = stats[:total_time] / stats[:execution_count]
  stats[:last_executed] = Time.now
  stats[:result_counts] << result_count

  # Alert on performance degradation relative to previous average
  if prev_count >= 5 && execution_time > (prev_avg * 3)
    message = '[code_to_query] PERFORMANCE ALERT: Query performance degrading'
    CodeToQuery.config.logger.warn(message)
    warn message
  end

  # Alert on slow queries based on running average and other signals
  check_performance_alerts(stats)

  stats
end