Do you really need separate systems when you already have Postgres?

This article argues that many startups prematurely adopt complex, multi-database architectures when a single PostgreSQL instance would suffice. It suggests that simplifying infrastructure reduces operational overhead and maintenance costs.
Why it matters
It challenges the industry trend of over-engineering software systems, advocating for 'boring' technology to improve startup efficiency.
Do you really need separate systems for caching, queues, search, documents, and vector embeddings when you already have Postgres?
The article presents a technical opinion on software architecture, which is a common debate in the engineering community.
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