The implementation sidesteps the entire question of the kernel’s ability to write to unwritable userspace memory! It exerts the kernel’s control over the virtual memory subsystem to bypass the MMU entirely, allowing the kernel to simply write to its own writable address space. This renders the CR0.WP discussion moot.
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copy-paste it directly into their own config. No dependencies. No，这一点在游戏中心中也有详细论述
StorageThere are several reasons why SpacetimeDB shows such good write performance in the synthetic benchmarks they’ve published. Obviously, the elephant in the room is that application logic runs locally next to the database and it can be exceedingly efficient when writing to the data store that way. They boost this efficiency even further with other tricks (such as batching writes), but to get to the performance numbers they’re showing, you need to cut corners somewhere: the data store is in-memory, which is very much unlike a traditional RDBMs.