Choosing a storage solution for simple user input

fullstackplus — Wed, 20 Oct 2021 13:05:08 +0000

Hi everyone,

here's an engineer-y question for you regarding lead generation online.

Say you had to collect your visitors' name & email through a landing page opt-in. What storage mechanism would you use:

a JSON file
a key-value store
a relational DB?

My current solution is a JSON file, however it's not very efficient because when saving a new entry, you need to parse all the existing ones into an Array from JSON, add the new data, then again serialize the entire collection as JSON, then write it back to the file.

Also, if I'm going to do uniqueness tests (no double entries allowed for email, for example), I'll have to traverse the entire array to find the duplicate — I suspect this is more efficiently handled by the other two storage mechanisms (hash-based lookup in constant time).

Thanx for your input!

Running a modular Sinatra app on Heroku

fullstackplus — Thu, 19 Jul 2018 16:23:05 +0000

Hello, I'm having trouble getting a modular Sinatra app to run correctly in production. The git push heroku master works fine, but when I try to submit a form through the /contact page I get:

bundler: failed to load command: rackup (/app/vendor/bundle/ruby/2.4.0/bin/rackup).

My Procfile:

web: bundle exec rackup config.ru -p $PORT

My config.ru:

require 'rubygems'
require 'bundler'

Bundler.require

require_relative 'lib/app'
run Tir::App

My lib/app.rb:

require 'sinatra/base'
require File.expand_path('articles', File.dirname(__FILE__))
require File.expand_path('static', File.dirname(__FILE__))
require File.expand_path('landing', File.dirname(__FILE__))

module Tir
  class App < Sinatra::Base
    #code
  end
end

I've tried all manner of tweaks but am stuck! Thanks for any help.

DEV Community: fullstackplus

Choosing a storage solution for simple user input

Running a modular Sinatra app on Heroku