PgDog, a proxy layer for horizontal PostgreSQL scaling, announced $5.5M in funding from Basis Set, YC, and Pioneer Fund. The tool addresses PostgreSQL's notorious scaling limitations by enabling sharding across large datasets without application changes.

The startup claims production deployments handling over 2 million queries per second across dozens of installations, with more than 20 TB of sharded data. Weekly releases every Thursday have driven over 1.4 million Docker pulls, indicating strong developer adoption of the open-source solution.

Founder Lev previously scaled PostgreSQL at Instacart during the 2020 growth surge, sharding across RDS, Aurora, and EC2. This hands-on experience building production systems informs PgDog's approach to making PostgreSQL work at massive scale without the complexity typically associated with horizontal scaling.

An Enterprise edition targeting AWS deployments will offer SLA-backed support for organizations needing production guarantees. With years of runway secured, PgDog plans to eliminate PostgreSQL scaling barriers across on-premises, cloud, and hybrid environments.