In Mongo, when using w: 1 in a write concern, the write operation is acknowledged after being successfully applied to the primary's instance memory. However, w: 1 alone does not guarantee durability unless combined with j: true (journaling). Running standalone Mongo, as we did in the tests, defaults to j: false. I have explicitly set it to true in the testing script to make write comparisons to Postgres objective. You can dive deeper into this here: https://www.mongodb.com/docs/manual/reference/write-concern/#acknowledgment-behavior and here: https://www.mongodb.com/docs/manual/core/journaling/. Unfortunately, docs are a bit convoluted about it
这台机器目前披露的细节虽然有限，但从现场展出的硬件外设以及 vivo 产品经理韩伯啸释出的信息来看，vivo 今年的影像思路，已经彻底明牌——强化超长焦，着重搞视频。，推荐阅读下载安装 谷歌浏览器 开启极速安全的 上网之旅。获取更多信息
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再写代码：从插入/冒泡开始，逐步挑战快排/归并。体育直播对此有专业解读
Олеся Мицкевич (Редактор отдела «Силовые структуры»)