Elixir Conf EU 2016

Video recording and production by Erlang Solutions

Through Erlang, Elixir developers have access to some amazing tools for building resilient distributed systems. riak_core is one such tool: it provides the framework behind Riak’s high availability KV store. In this talk, I’d like to explore some unconventional architecture by using riak_core and Phoenix to build fault-tolerant stateful web applications. What happens when the app servers are also the database nodes? Can we avoid some of the traditional pitfalls of stateful servers? Is this a remotely good idea? Let’s take a look! Talk objectives 1) Stateless/stateful setups for web applications — what do these words mean? 2) CAP in brief, consistent hash rings for distributing work: what are the tradeoffs? 3) riak_core - what does it do? Paraphrasing Mariano Guerra’s excellent work. 4) Build a Phoenix application that cohabitates on a riak_core hash ring. What superpowers do we gain from this? What do we have to watch out for? Can we do cool tricks with load balancing or channels? In-memory databases for super-speedy responses? 5) Loosely comparable systems in production/prior art - Microsoft Orleans, Facebook Scuba, others Target audience Intermediate+ Elixir programmers, web developers, students of distributed systems. Ben works on service discovery, maps of the infrastructure, and human-system reliability.

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