Hannu Valtonen is the maintainer of the PostgreSQL extension pgmemcache, the PostgreSQL backup daemon pghoard and the replication/failover monitor pglookout. For the last decade his day job's have revolved around developing very large scale distributed systems.
In 2015 he co-founded Aiven and has been working there on next generation cloud database services as VP Product. (https://aiven.io)
Stateful systems on immutable infrastructure
Lessons learned operating thousands of stateful production clusters on top of Fedora and systemd-nspawn.