Akka Paint

Akka Paint is web application that implements scalable, multiuser, with real time changes painting board. This is a simple project demonstrating Play! and Akka features such as:

• persistent actors
• cluster sharding
• akka-streams

More info about the project can be found here.

Try it!

• Install and run cassandra database

Probably the easiest way to do so:

docker run --name akka-paint-cassandra -p 9042:9042 -d cassandra:latest

Create tables structure for akkapaint-history feature:

docker cp ./akkapaint-history/src/main/resources/images.cql akka-paint-cassandra:images.cql
docker exec -it akka-paint-cassandra cqlsh -f images.cql

• Simply type sbt run and go to the address http://localhost:9000/demo.

Open the second window to see real time changes!

Or try the online demo: http://demo.akkapaint.org/

Load the whole image

Type sbt "runMain org.akkapaint.perf.AkkaPaintSimulationMain" to load default image. It will send whole image pixel by pixel (aka. stress test ;))