75: RabbitMQ and Commanded at Simplebet with Dave Lucia

We talk with Dave Lucia about Simplebet’s use of RabbitMQ and Commanded for solving unique real-time problems. We learn how Simplebet uses Elixir when creating real-time sports betting markets. We also learn what CQRS systems are, how the Commanded library supports that in Elixir, and how Commanded pairs well with RabbitMQ. Dave talks about moving away from Kafka to RabbitMQ and how that made sense for their use cases. Also valuable, Dave shares where they have found the “dragons” in their design. A helpful discussion that helps identify when CQRS systems might be a tool to use when solving our own problems. Also, Simplebet is betting on SurfaceUI for front-end design in a big and interesting way as well! Show Notes online - http://podcast.thinkingelixir.com/75 Elixir Community News https://fly.io/phoenix-files/ – Phoenix focused section of Fly.io blog https://fly.io/phoenix-files/safe-ecto-migrations/ – Safe Ecto Migrations multi-part guide https://github.com/erlang/otp/pull/5292 – Erlang 25 is documenting all the built-in types https://twitter.com/theerlef/status/1460683487317577734 – Erlang Ecosystem Foundation shared that they reached the milestone of 1000 members! https://www.youtube.com/watch?v=y8-9yZlye30 – Quinn Wilton's "100 years of Erlang" Code Beam America presentation https://slides.com/rc-6/100-years-of-erlang-slimmed – Quinn's slides https://github.com/spawnfest/eep49ers/ – SpawnFest Overall Winner https://github.com/spawnfest/eArangoDB – SpawnFest Maintainability Winner https://github.com/spawnfest/beamoji – SpawnFest Innovation Winner https://www.twitch.tv/josevalim – Advent of Code problems will be solved by Jose Valim on Twitch https://github.com/rrrene/credo/blob/master/CHANGELOG.md – Credo 1.6 release includes mix credo --first-run feature https://github.com/livebook-dev/kino/pull/50 – Jonathan's Kino PR that adds "controls" and is demonstrated by playing multi-player Pong in a Livebook notebook! https://github.com/pprzetacznik/IElixir – Jupyter's kernel for Elixir https://github.com/elixir-lang/ex_doc/blob/main/CHANGELOG.md – ExDoc v0.26.0 is out with new usability features https://twitter.com/josevalim/status/1462436734285795340 – José Valim highlights several new ExDoc features https://vimeo.com/647867227 – Oban Web v2.8.0 is out along with Oban Pro v0.9.3 and a video demonstrates the changes Do you have some Elixir news to share? Tell us at @ThinkingElixir or email at [email protected] Discussion Resources https://www.youtube.com/watch?v=dmBdFh5N1g4 – Migrating from Kafka to RabbitMQ at SimpleBet: Why and How | David Lucia | RabbitMQ Summit 21 https://medium.com/@davelucia/two-years-of-elixir-at-the-outline-ad671a56c9ce https://medium.com/@davelucia/beyond-functions-in-elixir-refactoring-for-maintainability-5c73daba77f3 https://medium.com/@davelucia/battleship-elixir-json-sunk-my-float-dc3df46447db https://soundcloud.com/elixirtalk/episode-153-feat-dave-lucia-the-dream-stack-with-rust-elixir https://www.youtube.com/watch?v=xmUfTl33-fU – Rustling up predictive sporting betting models on the BEAM - DAVID LUCIA https://www.youtube.com/watch?v=wvfhrvAFOoQ – David Lucia - Refactoring Elixir for maintainability | Code BEAM SF 19 https://www.youtube.com/watch?v=Lh5rA1pgWCk – ElixirConf 2021 - Dave Lucia - Surface - a bridge to the Javascript community https://github.com/davydog187/migrating_from_kafka https://speakerdeck.com/davydog187/betting-on-observability-at-simplebet https://lightstep.com/case-studies/simplebet/ https://theoutline.com/ https://www.bloomberg.com/ https://www.theverge.com/ https://www.bdg.com/ https://www.draftkings.com/ https://www.amqp.org/ https://www.rabbitmq.com/ https://github.com/commanded/commanded https://opencollective.com/commanded https://microservices.io/patterns/data/cqrs.html https://en.wikipedia.org/wiki/Conflict-free_replicated_data_type https://www.confluent.io/blog/avro-kafka-data/ https://kafka.apache.org/ https://www.linkedin.com/in/joseph-lozano/ https://en.wikipedia.org/wiki/Synthetic_monitoring https://github.com/surface-ui/surface Guest Information https://twitter.com/davydog187 – Dave Lucia on Twitter https://twitter.com/sb_engineers – Simplebet Engineering on Twitter https://twitter.com/simplebethq – Simplebet on Twitter https://github.com/davydog187/ – on Github https://davelucia.com – Blog Find us online Message the show - @ThinkingElixir Email the show - [email protected] Mark Ericksen - @brainlid David Bernheisel - @bernheisel Cade Ward - @cadebward Sponsored By:Fly.io: Fly.io is a great place to deploy your next Phoenix application! Check them out!