Module: ActiveRecord::ConnectionAdapters::QueryCache::ConnectionPoolConfiguration

# File 'activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb', line 139

def clear_query_cache
  if @pinned_connection
    # With transactional fixtures, and especially systems test
    # another thread may use the same connection, but with a different
    # query cache. So we must clear them all.
    @thread_query_caches.each_value(&:clear)
  else
    query_cache.clear
  end
end

# File 'activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb', line 135

def dirties_query_cache
  query_cache.dirties
end

# File 'activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb', line 103

def disable_query_cache(dirties: true)
  cache = query_cache
  old_enabled, cache.enabled, old_dirties, cache.dirties = cache.enabled, false, cache.dirties, dirties
  begin
    yield
  ensure
    cache.enabled, cache.dirties = old_enabled, old_dirties
  end
end

# File 'activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb', line 127

def disable_query_cache!
  query_cache.enabled, query_cache.dirties = false, true
end

# File 'activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb', line 113

def enable_query_cache
  cache = query_cache
  old_enabled, cache.enabled, old_dirties, cache.dirties = cache.enabled, true, cache.dirties, true
  begin
    yield
  ensure
    cache.enabled, cache.dirties = old_enabled, old_dirties
  end
end

# File 'activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb', line 123

def enable_query_cache!
  query_cache.enabled, query_cache.dirties = true, true
end

# File 'activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb', line 82

def initialize(...)
  super
  @thread_query_caches = Concurrent::Map.new(initial_capacity: @size)
  @query_cache_max_size = \
    case query_cache = db_config&.query_cache
    when 0, false
      nil
    when Integer
      query_cache
    when nil
      DEFAULT_SIZE
    end
end

# File 'activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb', line 157

def prune_thread_cache
  dead_threads = @thread_query_caches.keys.reject(&:alive?)
  dead_threads.each do |dead_thread|
    @thread_query_caches.delete(dead_thread)
  end
end

# File 'activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb', line 150

def query_cache
  @thread_query_caches.compute_if_absent(ActiveSupport::IsolatedExecutionState.context) do
    Store.new(@query_cache_max_size)
  end
end

# File 'activerecord/lib/active_record/connection_adapters/abstract/query_cache.rb', line 131

def query_cache_enabled
  query_cache.enabled
end