Ruby-on-Infinispan

Thursday, November 3, 11

Ruby-on-Infinispan Cloud-tastic Data Grids for Ruby apps

Galder ZamarreñoSenior Software Engineer

Red Hat, Inc


Galder Zamarreño

• R&D Engineer, Red Hat Inc.• Infinispan developer• Work on various JBoss projects• Twitter: @galderz• Blog: zamarreno.com


Agenda

• What is TorqueBox?• Rails caching limitations• What is Infinispan?• TorqueBoxStore• Cloud storage with Infinispan


What is TorqueBox?

The mating of JRuby to JBoss Application Server


What is TorqueBox?


Goals of TorqueBox

• Support Ruby web frameworks• Rails, Sinatra, Rack

• Go beyond web• Messaging• Enterprise-Grade Caching• Data Grid Storage


Hmmm, but...

... Rails already supports caching... and why would I want to store data in a data grid?


What’s wrong with Rails caching?


Caches are OK

Actually, action and fragment caches are useful in production but they don’t cover all needs


Cache Stores

Choice provided by Rails is a bit limited...


MemoryStore

Does not share cache contents and is not concurrent-safe


MemCacheStore

Caches in Danga’s Memcached servers

Probably the most popular option in production


MemCacheStore

Do you really need a separate process for a cache?

Cache operations not local...


TorqueBoxStore

Brand new store!

Integrates with Infinispan, a data grid platform from JBoss


Introducing


What is Infinispan?

An in-memory, highly available, elastic, and open source (LGPL) data grid platform


Clustered

Consistency achieved via invalidation, replication and distribution modes


API

Map-like key/value store and JPA layer via Hibernate OGM


Embedded Access


Remote Access

• Via protocols :

• REST

• Hot Rod


And more...

• Highly concurrent with MVCC locking• Persistence, not just in-memory• Adaptive eviction and expiration• JMX and RHQ server monitoring• ...etc


Why should I use TorqueBoxStore?


TorqueBoxStore

Provides a local, in-memory, highly-concurrent, clustered cache


config/application.rb


Default Cache Mode

When TorqueBox clustered, it uses Invalidation, otherwise it’s just Local


Beyond Rails Caching...


Durable Counters


Enough of caching...


What’s all about data grid storage?


Traditional 3-tier App


Typical IaaS App


Traditional PaaS App


Where’s your data stored??


Clouds are ephemeral!!


State


Virtualizing Data

Some public services exist (i.e. Amazon RDS), but not all cloud deployments are public!


Characteristics of DaaS

Elastic, scalable and highly available!


DaaS with Infinispan


ArchitectureM

anage and Monitor


What are those Infinispan nodes??


Either

• Infinispan Hot Rod servers started via:

• or servlet container w/ Infinispan REST war• or JBoss Enterprise Data Grid nodes


How do Ruby apps talk to them?


Talk to Infinispan REST


Hmm, Hot Rod is a custom protocol...


JRuby Hot Rod clientgithub.com/noelo/hotrod-jruby.git


https://github.com/noelo/hotrod-jruby.git

https://github.com/noelo/hotrod-jruby.git

What’s next?


Roadmap

ActiveModel backend that stores stuff in Infinispan data grid nodes


Summary

TorqueBoxStore: in-memory, clustered & highly concurrent

Rails and low level caching!


Summary

Infinispan servers: distributed, elastic and highly available cloud-ready store


Questions?

torquebox.org - infinispan.org#torquebox #infinispan on IRC@torquebox - @infinispan

speakerrate.com/galder


Technology

Ruby-on-Infinispan