Horizontal scalability limitations at high load

PostgreSQL lacks native horizontal scalability features. When instance sizes become insufficient, teams experience downtime during scaling operations. Aurora vacuuming and scaling issues persist, and teams desire alternatives like CockroachDB that support true horizontal scaling without downtime.

Sources

• https://postgresql.us/events/pgconfnyc2024/sessions/session/1849/slides/148/pgconf%20NY_%20PostgreSQL%20operational%20pain%20points%20and%20solutions.pdf
• https://www.siriusopensource.com/en-us/blog/postgres-problems-what-are-challenges-using-postgresql-enterprise

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