email-sender

Sms <-> Email bridge application - developped with scala and play2.

This app is based on a fully async stack

• play asynchronous
• async driver for redis rediscala and play2-rediscala
• async driver for mongodb reactivemongo
• akka

This application is developped for learning purposes only. It demonstrates how to

• set up continuous integration with travis
• set up a local development environment with docker
• set up a staging and production environment
• use google Oauth2 SSO and facebook Oauth2 SSO to allow users to login
• deploy the app on heroku using a custom scala buildpack
• use newrelic and papertrail for monitoring and logging
• use scaldi dependency injection framework
• unit test actors, controllers and so on, using mockito and specs2
• setup SSL for a play application on heroku
• integrate bootstrap and jQuery validation with play forms
• use webjars with CDN and versioning
• serve internal static resources using a CDN (cloudfront), with asset versioning (using sbt-digest)
• how to integrate prismic CMS, to display CMS content anywhere

Architecture evolution

• to be able to scale out, web UI, api endpoints and forwarding jobs should be split into different nodes
• web, forwarding and api nodes would thus be able to scale out independently
• api endpoints would send jobs to forwarding workers (using AMQP shared queues - rabbitMQ, since akka remote actors cannot be setup on an infrastructure with changing IP addresses such as Heroku's)
• forwarding workers would still send notifications to web nodes, using redis pubsub (as it is now), or an AMQP topic

Sms and email managenement are done with twilio and mailgun.

Project documentation is here.