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That was too much, but they still managed to handle over/close to 100 000 docs/rows inserts per second in a batch mode. MongoDB decisively wins here with 115 batch inserts/s vs 81 batch inserts/s for PostgreSQL; latency (queries duration) difference is even more pronounced - 46.766 ms vs 23.828 ms by mean and 127.184 ms vs 821.431 ms by 99th percentile (the lower the better).
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Good. But contracts have a structural problem that the talk doesn’t address: they depend entirely on the developer writing correct and complete annotations. This is the “disciplined programmer” assumption that has been the central failure mode of C++ safety for 40 years. We gave developers const. They don’t always use it. We gave them smart pointers. They still use new. We gave them std::array. They still use C arrays. Every single opt-in safety feature in C++ history has had incomplete adoption because adoption requires discipline, and discipline doesn’t scale across teams, across dependencies, across decades of maintenance.
if(h->type==BOXTYPE) {