ElixirConf 2016 - Migrating an Invoicing System to Elixir/Erlang by Norberto Ortigoza

Migrating an Invoicing System to Elixir/Erlang by Norberto Ortigoza Electronic invoices are a critical part for trade in Mexico. If invoices are not created and delivered in time, we can generate serious problems such as complete loss of cargo ships, representing millions of Mexican pesos in losses. We had a legacy system developed in Java from 8 years ago. It had a lot of problems including: Big memory footprint (24 GB per server) A lot of servers in order to distribute load and isolate errors (15 servers