# File lib/memcache_util.rb, line 68
  def self.delete(key, delay = nil)
    start_time = Time.now
    CACHE.delete key, delay
    elapsed = Time.now - start_time
    ActiveRecord::Base.logger.debug('MemCache Delete (%0.6f)  %s' %
                                    [elapsed, key])
    nil
  rescue MemCache::MemCacheError => err
    ActiveRecord::Base.logger.debug "MemCache Error: #{err.message}"
    nil
  end