PostgreSQL is awesome, but it's hard to manage a single database with some terabytes of data and 105+ queries per second. Current sharding solutions focus on analytical and hybrid workloads (OLAP, HTAP). Moreover, most of those solutions do not provide a smooth path for monolith to sharded transitions, which is why Yandex Cloud's Data Platform team developed SPQR. SPQR is a production-ready system