[WJW]

Oh for sure. The last company I worked at did a similar thing and decreed that all Ruby projects would be maintenance-only and all new projects were to be in Golang, despite there being a single golang dev in the entire company (who did not even work in the backend dev team but rather in a "platform" team). Within five months all the Ruby devs had left, so despite not a single Golang project being released yet the company now had nobody who knew how the current system works. Several large outages ensued.

[john_the_writer]

Yeah.. I'm seeing the same thing where I work. Moving from ruby/rails to elixir. No outages, but dev speed is at a crawl. All the legacy stuff just gets ugly patches.

There was zero need to switch because even though elixir/BEAM allows for a pile of processes, postgres does not.

If I had to guess, the switch was made because someone saw something shiny.