关于ruby：在rails控制台中Postgres连接太多了

Postgree too many connections in rails console

我正在使用postgre gem开发一个Ruby on Rails应用程序，这就是我的database.yml的样子：

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development:
adapter: postgresql
encoding: utf-8
pool: 5
username:"hytxlzju"
password:"xxxxx"
host:"jumbo.db.elephantsql.com"
port:"5432"
database:"hytxlzju"

production:
adapter: postgresql
encoding: utf-8
pool: 5
username:"hytxlzju"
password:"xxxxxx"
host:"jumbo.db.elephantsql.com"
port:"5432"
database:"hytxlzju"

每当我在本地连接到这个数据库时，从rails console我得到的连接太多了。一旦用户注销，代码中如何终止代码中的连接，以及在完成更改表后如何在rails控制台中终止一个连接？

[编辑]
这是错误消息：

1 2	C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/activerecord-3.2.22.5/lib/active_record/connection_adapters/postgresql_adapter.rb:12 22:in `initialize': FATAL: too many connections for role"hytxlzju" (PG::ConnectionBad)

[编辑]我添加了我的启动器，仍然没有成功：

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Rails.application.config.after_initialize do
ActiveRecord::Base.connection_pool.disconnect!

ActiveSupport.on_load(:active_record) do
config = ActiveRecord::Base.configurations[Rails.env] ||
Rails.application.config.database_configuration[Rails.env]
config['pool'] = ENV['DB_POOL'] || ENV['RAILS_MAX_THREADS'] || 5
ActiveRecord::Base.establish_connection(config)
end
end

您可以尝试以下方法

Active Record limits the total number of connections per application
through a database setting pool; this is the maximum size of the
connections your app can have to the database

在config/datbase.yml

1	pool: <%= ENV['RAILS_MAX_THREADS'] \|\| 5 %>

如果您使用的是puma，请在此处使用ENV['RAILS_MAX_THREADS']

它可能会解决问题。