{"published":"2021-09-28 18:15:50","author_name":"kaigai","author_url":"https://blog.hatena.ne.jp/kaigai/","description":"\u5c11\u3057\u3001\u3053\u3061\u3089\u306e\u30d5\u30a9\u30ed\u30fc\u30a2\u30c3\u30d7\u8a18\u4e8b\u3068\u306a\u308a\u307e\u3059\u3002kaigai.hatenablog.com\u30d6\u30ed\u30b0\u516c\u958b\u5f8c\u3001\u4f55\u4ef6\u304b\u30b3\u30e1\u30f3\u30c8\u3092\u3044\u305f\u3060\u304d\u307e\u3057\u305f\u3002PG-Strom\u3067COUNT(distinct KEY) \u306bHyperLogLog\u3092\u4f7f\u3046\u304a\u8a71\u3002\u5c02\u7528\u306e\u95a2\u6570\u3092\u4f7f\u3046\u306e\u304b\u3068\u601d\u3063\u305f\u3089\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u306eon/off\u3067COUNT\u81ea\u4f53\u306e\u8a08\u7b97\u65b9\u6cd5\uff08\u5b9f\u884c\u8a08\u753b\uff09\u3092\u5909\u3048\u308b\u306e\u304b\u3002Citus\u306b\u3082\u540c\u69d8\u306e\u4ed5\u7d44\u307f\u304c\u3042\u3063\u3066\u3001\u305d\u3061\u3089\u306ferror_rate\u3092\u6307\u5b9a\u3059\u308b\u306e\u304b\u306a\u3002 https://t.co/Z4JCh8EoHQ\u2014 \u3053\u3070 - as a DB Engineer - (@tzkb) 2021\u5e749\u670825\u65e5 \u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059\u3002\u500b\u4eba\u7684\u306b\u306fhll_cou\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkaigai.hatenablog.com%2Fentry%2F2021%2F09%2F28%2F181550\" title=\"HyperLogLog\u3092\u4f7f\u3063\u305f\u30ab\u30fc\u30c7\u30a3\u30ca\u30ea\u30c6\u30a3\u306e\u63a8\u6e2c\uff08\u88dc\u8db3\uff09 - KaiGai\u306e\u4ffa\u30e1\u30e2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://kaigai.hatenablog.com/entry/2021/09/28/181550","blog_url":"https://kaigai.hatenablog.com/","height":"190","blog_title":"KaiGai\u306e\u4ffa\u30e1\u30e2","type":"rich","title":"HyperLogLog\u3092\u4f7f\u3063\u305f\u30ab\u30fc\u30c7\u30a3\u30ca\u30ea\u30c6\u30a3\u306e\u63a8\u6e2c\uff08\u88dc\u8db3\uff09","image_url":null,"version":"1.0","width":"100%","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","categories":[]}