Фото: Александр Казаков / РИА Новости
This article is republished from The Conversation under a Creative Commons license. Read the original article.。关于这个话题，新收录的资料提供了深入分析
中国科学院院士、香港科学院院长、香港中文大学校长 卢煜明。新收录的资料对此有专业解读
4KB (Vec) heap allocation on every read. The page cache returns data via .to_vec(), which creates a new allocation and copies it into the Vec even on cache hits. SQLite returns a direct pointer into pinned cache memory, creating zero copies. The Fjall database team measured this exact anti-pattern at 44% of runtime before building a custom ByteView type to eliminate it.