Summary

As our system architectures and the Internet of Things continue to push us towards distributed logic we need a way to route the traffic between those various components. Crossbar.io is the original implementation of the Web Application Messaging Protocol (WAMP) which combines Remote Procedure Calls (RPC) with Publish/Subscribe (PubSub) communication patterns into a single communication layer. In this episode Tobias Oberstein describes the use cases and design patterns that become possible when you have event-based RPC in a high-throughput and low-latency system.

Preface

• Hello and welcome to Podcast.__init__, the podcast about Python and the people who make it great.
• I would like to thank everyone who has donated to the show. Your contributions help us make the show sustainable.
• When you’re ready to launch your next project you’ll need somewhere to deploy it. Check out Linode at linode.com/podcastinit and get a $20 credit to try out their fast and reliable Linux virtual servers for running your awesome app.
• Visit our site to subscribe to our show, sign up for our newsletter, read the show notes, and get in touch.
• To help other people find the show you can leave a review on iTunes, or Google Play Music, and tell your friends and co-workers
• Your host as usual is Tobias Macey and today I’m interviewing Tobias Oberstein and Alexander Gödde about Crossbar.io, a high throughput asynchronous router for the WAMP protocol

Interview

• Introductions
• How did you get introduced to Python?
• What is Crossbar and what is the problem that you were trying to solve when you created it?
• What is the status of the IETF WAMP protocol proposal?
• Why have an open protocol – and how do you see the ecosystem?
• Python isn’t typically considered to be a high-performance language so what led you to use it for building Crossbar?
• How is Crossbar architected for proxying requests from a highly distributed set of clients with low latency and high throughput?
• How do you handle authorization between the various clients of the router so that potentially sensitive messages don’t get published to the wrong component?
• Does Crossbar encapsulate any business logic or is that all pushed to the edges of the system?
• What are some of the typical kinds of applications that Crossbar is designed for?
• What are some common design paradigms that would be better suited for a WAMP implementation?
• What are some of the most interesting or surprising uses of Crossbar that you have seen?
• What do you have planned for the future of Crossbar?

Keep In Touch

• Mailing Lists
  • https://groups.google.com/forum/#!forum/autobahnws?utm_source=rss&utm_medium=rss
  • https://groups.google.com/forum/#!forum/wampws?utm_source=rss&utm_medium=rss
  • https://groups.google.com/forum/#!forum/crossbario?utm_source=rss&utm_medium=rss
• #autobahn on IRC

Picks

• Tobias
  • Logan
• Alex
  • Pivotal Tracker
• Tobias
  • PyPy
  • Brian Warner
  • Click
  • prompt-toolkit

Links

• Autobahn
• WAMP
• PyPy
• API Gateway

The intro and outro music is from Requiem for a Fish The Freak Fandango Orchestra / CC BY-SA