llm/302a36fb-79e1-4f4b-b047-e145d20e4497/topic-15-2a40afdb-168f-4146-9299-9cf3d86cf7f1-output.json
While traditional wisdom favors multi-tier architectures like Postgres, many proponents argue that SQLite’s modern features—such as WAL mode and `BEGIN CONCURRENT`—allow a single node to handle thousands of simultaneous connections with impressive efficiency. By serializing fast writes, a single machine can theoretically serve millions of users without noticeable lag, challenging the necessity of complex cloud infrastructures for most business applications. This "single-node" resurgence is further bolstered by tools like Litestream for backups and Cloudflare D1 for edge sharding, which capitalize on the massive power of modern hardware and the latency gains of colocating the database with the web server. Ultimately, the discussion suggests that for many use cases, over-engineering for "Facebook-scale" creates unnecessary complexity that a well-tuned, local SQLite setup can easily bypass.