> ## Documentation Index > Fetch the complete documentation index at: https://docs.pg-sharding.tech/llms.txt > Use this file to discover all available pages before exploring further. # Welcome to SPQR ## What is SPQR SPQR (Stateless Postgres Query Router) is a production-ready system for horizontal scaling of PostgreSQL via sharding. A real open source distributed under the PostgreSQL Global Development Group License. ```bash theme={null} # Pull the latest stable SPQR router image docker pull pgsharding/spqr-router:latest # Run with your configuration docker run -d \ --name spqr-router \ -v /path/to/router.yaml:/etc/spqr/router.yaml:ro \ -p 6432:6432 \ -p 7432:7432 \ -p 7000:7000 \ pgsharding/spqr-router:latest ``` ## Why SPQR PostgreSQL is awesome, but it's hard to manage a single database with some terabytes of data and 10⁵+ queries per second. Existing sharding solutions focus on analytical and hybrid workloads (OLAP, HTAP). Moreover, most of those solutions do not provide a simple, painless path for the monolith \<-> sharded transitions. That's why the
[Data Platform team of Yandex.Cloud](https://cloud.yandex.com/en-ru/services#data-platform) designed SPQR. Our team has been exploring different approaches to sharding a PostgreSQL cluster for a long time. We have considered FDW-based sharding, CustomNode-based sharding, C-implemented lightweight query routing, and finally came to the SPQR design. SPQR is a good fit for: * Developers who are comfortable with Postgres and prefer not to use other database engines * Developers who cannot or do not wish to implement sharding logic on the application level * A database that is well splitted by a sharding key * Single-shard OLTP queries Start sharding your PostgreSQL cluster in 5 minutes Learn more how SPQR works under the hood Main SPQR features The complete Configuration reference