一张以前所未有的精度绘制出的新地图呈现了南极洲冰层下地貌前所未见的细节。科学家认为这张地图能极大地增进我们对这片白色冰封大陆的认识。 Thanks to data collected by satellites, scientists have a good understanding of Antarctica's icy surface, but what lies beneath has ...

Last year, global temperatures were cooled slightly by a natural weather pattern in the Pacific called La Niña. That meant it wasn't quite as hot as 2024, but the long-term trend is clear. The last 11 ...

引言 缓存是工程师优化分布式系统时首先采用的工具之一。我们会缓存已完成的响应（如数据库查询结果或HTTP响应体），以避免重复执行昂贵的任务。然而，传统缓存未能解决一个经常被忽视的低效源头，即重复的进行中请求（duplicate in-flight request）。