Ask HN: What database storage engine do you use, and why?

Today I couldn't start my MariaDB database anymore after a hardware failure, because some data was being written during the server crash, and the idb file was unusuable. I couldn't find any easy way to recover it, so I just restored the table from the backup, loosing several records. That made me think, is anybody using other engines in production environments? If yes, which ones, and why?