Migrating from Monolithic Rails

by Danielius Visockas

Twitter: @DVisockas

v1

Let’s look at Rails

Desktop only

Extractions of patterns

History of Rails

Let’s fast forward 10 years

Why Rails is nice:

● Routing

● Models (!)

● Persistence (migrations, schema)

● Sessions, cookies management

● Mailers

● Other stuff (rake tasks, assets pipeline, etc)

Story actually starts here

We had 2 apps

Main Rails app and Sinatra for the API

In the main app we used plain Rails

views and jQuery for the magic

Frontend magic

548 view files 84 javascript files

some files that would make sense

Late extraction costs more than early abstraction

Especially in frontend

&&

Your friends

Next thing: build an API

That’s where Ruby is the best tool

Ruby API building tools

An opinionated micro-framework for creating REST-like APIs in Ruby.http://intridea.github.io/grape

● Specifically for building API’s

● Minimal

● Fast (Grape: 2227 req/sec vs RailsAPI: 1111.42 req/sec) on 1.9.3

Other cool features of moving to

Grape

● Support from the community

● You already have models

● Documentation

● Easy integration into Rails

From evolution to revolution

● Small steps

● Reduced server load

● Easier to add other (micro-)services

● Easier scaling

● You can concentrate on one side of the app

Try it after 2 days

Thank you!

Please ask questions

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