For reads, the story is very similar. They’re supposed to happen through “Views”, which are the read-only equivalent to reducers. Since they acquire a reader lock on the global mutex, several views can run concurrently, but the database cannot be written to while views are executing. Just like reducers, views are arbitrary user code compiled to WebAssembly.
(use-package julia-snail
。新收录的资料对此有专业解读
与此同时，苹果还上调了256GB内存升级的价格：在高配M3 Ultra机型上，从96GB升级到256GB的加价，已经从此前的1600美元涨至2000美元；而在被取消前，512GB内存升级的价格为4000美元。 苹果此次取消512GB选项的主要原因，被普遍认为是全球DRAM供应持续吃紧，导致高容量内存供给趋于枯竭、成本大幅攀升，也由此推高了256GB配置的交货周期和价格压力。
Nature, Published online: 03 March 2026; doi:10.1038/d41586-026-00678-7
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