2019-06-16

如何在 Linux 下确认 NTP 是否同步?

[ 查询亿级数据毫秒级返回!牛逼哄哄的ElasticSearch是如何做到的? ](https://mp.weixin.qq.com/s?__biz=MzU0OTk3ODQ3Ng==&mid=2247485379&idx=1&
sn=d254376a5f8287d03eefc8c4351f20a1&utm_source=tuicool&utm_medium=referral)

sonic
Sonic is a fast, lightweight and schema-less search backend. It ingests search texts and identifier tuples that can then be queried against in a microsecond's time.

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