Why not to use Rails? (actually it's when not to use Rails)

Rails Israel 2012

Why not to use Rails?

Monday, November 12, 12

Arik Fraimovich@arikfr

TRuby Podcast

actually...Why use Rails at all?

• Community

• Ruby Gems

• Community

• Ruby Gems

• Simplicity

• Community

• Ruby Gems

• Simplicity

• Convention over configuration

• Community

• Ruby Gems

• Simplicity

• Choices that are made for you

• Community

• Ruby Gems

• Simplicity

• Choices that are made for you

When not to use Rails?

general purpose libraries (gems)

for the simple stuffMonday, November 12, 12

for large web applicationor anything that isn’t a

web application

“Our tools shape our thinking.”

@drnic

• Everything is sort of global, no need for require

• (Usually) no namespacing

• Everything in the context of HTTP request

No need to require?

• Sounds nice at the beginning

No need to require?

• But then it starts to creep on you and everything becomes sllllowww...

No need to require?

• Slow boot time

No need to require?

• Slow boot time

• Slow specs

No need to require?

• Slow boot time

• Slow specs

• Slow everything

No need to require?

Solution?

Spork (Zeus?)

Solution?

Spork (Zeus?)

The common Rails app.Monday, November 12, 12

The Rails app you wantMonday, November 12, 12

EnginesMonday, November 12, 12

WagonsMonday, November 12, 12

What about the everything in “HTTP context”?

Good question.

No good answers*

* from me. yet.

Some Pointers

• Actor Model - “easy” concurrency. Popular implementation in Ruby: Celluloid

Some Pointers

• JRuby

Some Pointers

• JRuby

• TorqueBox

Wrap up

• Use Rails, but remember there are other things out there

Wrap up

• Use Rails “carefully”, as your project grows

Wrap up

• Don’t forget that not everything is a nail

Wrap up

• Don’t forget that not everything is a nail

• And most important: keep using Ruby. It’s awesome

Wrap up

Questions?

@arikfr

• Architecture The Lost Years

• Wrangling Large Rails Codebases

• Hexagonal Rails

• Celluloid

• JRuby

• TorqueBox

• About concurrency and the GIL

• Images taken shamelessly from Google.

Why not to use Rails? (actually it's when not to use Rails)

Technology

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