Show HN: Shared – Triptych for data exchange and persistence

Hi HN! I'm Alex, a tech enthusiast who likes to build stuff from scratch. Often my programs have data to store or a configuration file to read and/or edit. Therefore, I design relational databases [1] and write SQL queries to manage complex data with relationships, and for other needs, I used to do unmaintainable hacks (custom file formats) with plain old files. But that was before I discovered Pickle [2], the Python data serialization module. A simple way to store a representation of memory-living data collections on local disk. Therefore, Pickle became my favorite way to store data, until one day I needed to exchange data with another program written in another language. Pickle is Python-specific by the way. Due to this embarrassing situation, I needed to find a way to "replace" Pickle. The new method should be language-agnostic. CSV [3], INI file [4] and JSON [5] respectively entered the room. As an open standard file format with a formal specification, JSON soun