The case for Direct I/O - why it matters for high performance storage
2026/05/31
/u/IlPresidente995
Hello everyone,
Recently I published on GitHub HedgeDB , my high-perf and persisted Key-Value store.
Internally, it uses Direct I/O ( O_DIRECT ) almost everywhere. In this article I explain the reasons behind this choice, also motivated from some fun experiments I had with fio that you can find in the article. and some consideration about the page cache.
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能改变理解方式，而不只是重复常识；符合当前抓取需求；它提供了新的理解或解释，而不只是表面观点
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