Our nine month journey to horizontally shard Figma’s Postgres stack, and the key to unlocking (nearly) infinite scalability.Vertical partitioning was a relatively easy and very impactful scaling lever that bought us significant runway quickly. It was also a stepping stone on the path to horizontal sharding.Figma’s database stack has grown almost 100x since 2020. This is a good problem to have because it means our business is expanding, but it also poses some tricky technical challenges. Over the...