bchamagne

idea n°2 is called [shadow paging](https://en.wikipedia.org/wiki/Shadow_paging), just stumbled upon that

Now that we know the lambda will be "old" only if we upgrade the LRU Module, should we close this ticket? Since LRU will probably rarely be upgraded. cc @samuelmanzanera...

btw, I saved the database to be able to reproduce

as discussed, we'll plan some pair programming to integrate this

This is not valid in elixir, so maybe we need to override the tokenizer to allow that

Maybe we can use https://github.com/Qqwy/elixir-type_check library