2 12-2015 - cassandra day la - using datastax enterprise and actor systems for fault tolerant,...

@petabridge Petabridge.com

DataStax Enterprise and Actor

Systems

By Aaron StannardCo-Founder and CTO – Petabridge

Co-Founder – Akka.NET

http://twitter.com/petabridge


http://petabridge.com/





What do we love about

Datastax Enterprise?








Intuitive Programming Model

(CQL3)








Easily Distributed








Highly Available








Amazing Conference Swag!








And more!

• Automatic cluster discovery (drivers)

• Tunable consistency

• Tremendous R/W throughput

• DSE Startup Program








What if we could have these

nice things in the application

layer too?








WHAT DO WE WANT?!

• Intuitive programming

model

• High availability

• Reliability

• Decouple application

design from network

topology








Enter the Actor Model








Akka.NET: Actor Model in .NET








Social Proof








Everything is an "actor"








This is an actor








Actors work by passing each

other messages








Message passing in action








Actors send messages to

addresses








Example








Actor addresses have location

transparency








So this means...








Magic Scaling Sauce!!!








(High Availability)








We Can Deploy Actors and

Send Messages Anywhere








Scaling Out

• Actors can be deployed anywhere

• Special "Router" actors distribute work

• Actors can be easily restarted and

redeployed








And Can Form Highly Available

Systems








Automatic Clustering

• Use seed nodes (just like DSE)

• New nodes can join and leave

• Work automatically gets redistributed

(because, routers)








But That's Not All!

• Persistent Actors

• Cluster Sharding

• And more!








DSE + Actor Systems...








In fact, you might already be

using them together...








Apache Spark: Built on Akka

(JVM)








Powerful Combinations

• Stream processing

• Event sourcing

• Real-time aggregation and analytics

• Dynamic pricing and other fun e-

commerce problems








Have questions? Ask us!

http://petabridge.com/datastax







http://petabridge.com/datastax

2 12-2015 - cassandra day la - using datastax enterprise and actor systems for fault tolerant,...

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