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Can you name a single application that has 250k concurrent writes (per second I assume as you didn’t stipulate) using a consistent sql backend (that is no exter
by kasey_junk 4y ago
Can you name a single application that has 250k concurrent writes (per second I assume as you didn’t stipulate) using a consistent sql backend (that is no external caching/sharing layer)?
I don’t think your example is a good fit for SQLite as it’s not a good fit for any sql store that I know of.
- endisneigh 4y agoA few vendors doing time series data. Even if you lowered it a couple orders of magnitude. I haven’t seen any app doing even 5K concurrent writes backed by SQLite.
- kasey_junk 4y agoWhat time series vendor is offering high write throughput consistent sql? Legitimately interested as this is something I have more than a little professional interest. That said, “show me an app doing 5k concurrent writes with SQLite” seems like a much more reasonable standard.
- rrdharan 4y agoUber, on Google Cloud Spanner, seems to be in this ballpark though they aren’t quite explicit about it: https://www.uber.com/blog/building-ubers-fulfillment-platform/ https://www.uber.com/blog/building-ubers-fulfillment-platfor...
- kasey_junk 4y agoSpanner is explicitly sharded. Sort of famously so.
- rrdharan 4y agoAll scale out databases use some form of sharding, tautologically. The parent asked about use cases where there wasn’t an _external_ (which I interpret to mean “handled explicitly by the app, not the database”) sharding / caching layer. Spanner internally handles splits based on load / size. That having been said, more careful reading of the Uber post shows that they still do employ additional app-level explicit sharding to resolve hot-spots, so it’s probably a fair point that this doesn’t qualify as an example the parent was looking for.