Who needs a real-time database?
SMRTR summary
The standard kdb+ architecture relies on real-time databases (rdbs) for in-memory data, but modern NVMe SSDs and OS page caching have changed the trade-offs significantly. Benchmarks show hdb (on-disk) query performance is within 0–20% of rdb for most workloads, while enabling parallel queries, instant process scaling, and simpler architecture — without the memory overhead of traditional rdbs.
SMRTR provides this summary for quick context. The original article belongs to Lobsters.
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