我已经用Google搜索并阅读了有关该主题的其他主题，并实施了我可以收集的所有建议。但是，我仍然遇到使用太多内存的问题（600MB +）。
我的users.rake文件：
namespace :users do
desc "TODO"
task sync_events: :environment do
User.find_in_batches(batch_size: 5) do |users|
users.each(&:sync_events)
end
end
end
user.rb模型中的sync_events方法：
def sync_events
unless self.username.empty?
# Make the request to swagger
request = RestClient.get 'https://****************/event/findByUser/' + self.username + '?fromDate=' + 1.days.ago.strftime('%Y-%m-%d') + '&toDate=' + 10.days.from_now.strftime('%Y-%m-%d')
json = JSON.parse request
events = json['events']
# We need to fetch the events from the DB or create them if they don't exists
events.each do |event|
# Find existing semester or create new
semester_in_db = Semester.where(:name => event['semester'][0]['name']).first_or_create!
# Find exisiting event, or create new one.
event_in_db = Event.where(:ext_id => event['id']).first_or_create!(
:title => event['title'],
:description => event['description'],
:begin => Time.parse(event['begin']),
:end => Time.parse(event['end']),
:semester_id => semester_in_db.id
)
# Check if lectureres/users exist, or create new, and add them to the event
event['lecturer'].each do |lecturer|
# We only want to do this for users with emails - valid users
if lecturer["email"].length > 5
user = User.where(:username => lecturer['username']).first_or_create!(
:email => lecturer['username'] + '@feil.no',
:altEmail => lecturer['email'],
:password => 'password',
:password_confirmation => 'password',
:first_name => lecturer['firstname'],
:last_name => lecturer['lastname'],
:identity => lecturer['firstname'] + ' ' + lecturer['lastname']
)
#connect lecturer to event
event_in_db.users << user unless event_in_db.user_ids.include?(user.id)
#Add role
user.add_role :lecturer, event_in_db
#try to sync email, because sometimes email is not formatted correctly
begin
user.email = lecturer['email']
user.save!
rescue
e = Error.new
e.body = lecturer['email']
e.save
end
end
end
# Added student user
event_in_db.users << self unless event_in_db.user_ids.include?(self.id)
# add role student, unless lecturer
self.add_role :student, event_in_db unless self.has_role? :lecturer, event_in_db
end
end
end
您可能会发现我不是经过培训的红宝石开发人员。这段代码正在进行一些重大的重构。但是，与此同时，我无法理解为什么它会占据我的全部记忆。我在DB中拥有大约500多名用户。最终，我的佣金任务被杀死了。
如您所见，我已经使用了find_in_batches而不是全部。我还将所有实例变量转换为局部变量。
我还能做些什么？