西藏林芝市察隅县发生3.7级地震,震源深度12千米

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The MCB chain acts somewhat like a linked list, but it is not a linked list. Instead of using some kind of a link pointer to the next item in the chain, the chain structure is implied by the location and size of the memory blocks. The memory blocks can only be processed in strictly ascending order and there cannot be any gaps between them.

Zero-copy page cache. The pcache returns direct pointers into pinned memory. No copies. Production Rust databases have solved this too. sled uses inline-or-Arc-backed IVec buffers, Fjall built a custom ByteView type, redb wrote a user-space page cache in ~565 lines. The .to_vec() anti-pattern is known and documented. The reimplementation used it anyway.,这一点在PDF资料中也有详细论述

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