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I'm now convinced single-node DuckDB is the best engine at any realistic scale (Reddit Thread)
A single-node DuckDB instance can outperform multi-node Trino clusters on 10 TB datasets for a fraction of the cost, provided the thread count is tuned.
What: Engineers are finding that distributed SQL engines often bottleneck on network I/O to S3. By over-provisioning read threads on a single high-performance machine, DuckDB achieves superior throughput to complex, multi-node clusters like Trino or Spark.
Why it matters: This suggests that vertical scaling on modern hardware with an efficient single-node engine is frequently more cost-effective and performant than distributed architectures for massive analytical workloads.
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