我如何更改 heroku 数据库/托管

Question

我想将我的 heroku 数据库更改为允许并发连接的东西，因为我的网站正在获得一些流量，并且在多个用户尝试访问该网站时似乎崩溃了。我已经考虑将我的数据库更改为独角兽，但不确定这是否是我真正需要的。我是初学者，对我需要做什么的任何见解都将非常有用！

我的宝石文件：

source 'https://rubygems.org'


# Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
gem 'rails', '4.1.8'
# Use sqlite3 as the database for Active Record

# Use SCSS for stylesheets
gem 'sass-rails', '~> 4.0.3'
# Use Uglifier as compressor for JavaScript assets
gem 'uglifier', '>= 1.3.0'
# Use CoffeeScript for .js.coffee assets and views
gem 'coffee-rails', '~> 4.0.0'
# See https://github.com/sstephenson/execjs#readme for more supported runtimes
# gem 'therubyracer',  platforms: :ruby

# Use jquery as the JavaScript library
gem 'jquery-rails'
# Turbolinks makes following links in your web application faster. Read more: https://github.com/rails/turbolinks
gem 'turbolinks'
# Build JSON APIs with ease. Read more: https://github.com/rails/jbuilder
gem 'jbuilder', '~> 2.0'
# bundle exec rake doc:rails generates the API under doc/api.
gem 'sdoc', '~> 0.4.0',          group: :doc
gem 'bootstrap-sass'

group :production do 
    gem 'pg'
    gem 'rails_12factor'    
end

group :development, :test do
    gem 'sqlite3'
end

# Use ActiveModel has_secure_password
# gem 'bcrypt', '~> 3.1.7'

# Use unicorn as the app server
# gem 'unicorn'

# Use Capistrano for deployment
# gem 'capistrano-rails', group: :development

# Use debugger
# gem 'debugger', group: [:development, :test]

# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
gem 'tzinfo-data', platforms: [:mingw, :mswin]

Answer 1

设置 puma 非常简单。按照这个一步一步来：https://devcenter.heroku.com/articles/deploying-rails-applications-with-the-puma-web-server

也就是说，我会更深入地挖掘。无论如何，换成 puma 都是值得的，但这可能不是您问题的根源。应用程序崩溃的原因可能有很多。

这里还有 puma 文档，以防万一：https://github.com/puma/puma