When I need to configure something in a complicated way, I find myself reviewing the embedded language that provided the server to create a flexible configuration. In Redis, you can improve the performance of requests, in Nginx, you can improve the handling of incoming requests, FreeSwitch offers alternatives for performing the same tasks using different embedded languages. Even in a software like TheGimp, you can add your own code to make edit images.

Among the embedded languages, JavaScript and Lua are the most commonly used languages. JavaScript is very well known to the Erlang community because it was integrated (as a port, it is not implemented on top of Erlang) in popular products such as CouchDB and Riak. But I think the more exciting option, raised by Erlang Co-Creator, Robert Virding, is to implement Lua on top of Erlang, which can be used as an embedded language. Why? Let’s take a look.

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