{"id":341223,"date":"2021-02-16T23:36:24","date_gmt":"2021-02-16T15:36:24","guid":{"rendered":"http:\/\/4563.org\/?p=341223"},"modified":"2021-02-16T23:36:24","modified_gmt":"2021-02-16T15:36:24","slug":"%e7%a4%be%e4%ba%a4%e7%bd%91%e7%bb%9c%e9%87%8c%e7%9a%84%e5%85%b3%e6%b3%a8%e5%ae%9e%e7%8e%b0%ef%bc%88%e7%b1%bb%e4%bc%bc-v2ex-%e7%9a%84%e5%85%b3%e6%b3%a8%ef%bc%89","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=341223","title":{"rendered":"\u793e\u4ea4\u7f51\u7edc\u91cc\u7684\u5173\u6ce8\u5b9e\u73b0\uff08\u7c7b\u4f3c V2EX \u7684\u5173\u6ce8\uff09"},"content":{"rendered":"
\n
\n
\n

\u793e\u4ea4\u7f51\u7edc\u91cc\u7684\u5173\u6ce8\u5b9e\u73b0\uff08\u7c7b\u4f3c V2EX \u7684\u5173\u6ce8\uff09 <\/h1>\n

<\/p>\n

\n
\u8cc7\u6df1\u5927\u4f6c : hambman <\/span> <\/i> 2<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
<\/p>\n

\u9700\u6c42\uff1a\u7528\u6237\u5173\u6ce8\u4e00\u6279\u7528\u6237\uff0c\u83b7\u53d6\u4ed6\u4eec\u7684\u52a8\u6001\u3002<\/p>\n

\u7279\u5927\u89c4\u6a21\u7c7b\u6bd4\u65b0\u6d6a\u5fae\u535a \u4f46\u662f\u5bf9\u4e8e\u4e2d\u7b49\u5e94\u7528\uff0c\u6bd4\u5982\u4e00\u4e2a\u7528\u6237\u5173\u6ce8\uff5e 100 \u4e2a\u7528\u6237\u5de6\u53f3 (\u660e\u661f\u7528\u6237\u6709\uff5e 1 \u4e07\u4e2a\u5173\u6ce8\u8005\uff09\uff0c\u7b80\u5355\u7684\u6570\u636e\u5e93\u67e5\u8be2\uff0c\u5982\u679c\u6682\u4e0d\u8003\u8651 redis \u7b49 cache \u65b9\u6848\u7684\u8bdd\uff0c\u80fd\u5426\u652f\u6301 10 \u4e07\u5de6\u53f3\u7684\u7528\u6237\u4f53\u91cf\u3002<\/p>\n

\u53ef\u4ee5\u8bf7 @livid \u5206\u4eab\u4e00\u4e9b\u7ecf\u9a8c\uff1f<\/p>\n

select topics where author_id in (\u7528\u6237\u5173\u6ce8\u7684\u7528\u6237\u5217\u8868\uff0c100 \u4eba\u5de6\u53f3)\u3002 <\/code><\/pre>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (16<\/span>)        <\/div>\n
 <\/div>\n<\/p><\/div>\n<\/p><\/div>\n
    \n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : Mitt <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8fd9\u70b9\u91cf\u8fd8\u4e0d\u6210\u95ee\u9898\u5427\uff0c\u505a\u597d\u7d22\u5f15\u5c31\u884c\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : js8510 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5982\u679c\u662f\u7eaf\u8003\u8651 sql \u6570\u636e\u5e93\u7684\u8bdd\uff0c\u5047\u8bbe\u8003\u8651\u7528\u6237\u8bbf\u95ee\u540c\u4e00\u4e2a DC\uff1a \uff08 1 \uff09\u505a\u4e00\u4e9b sharding \u8fd9\u6837\u53ef\u4ee5\u5e76\u53d1 select \u8bf7\u6c42\u3002 (2) \u505a replicates\uff0c \u4e00\u4e2a master write only \u7136\u540e replicates read-only. \u56e0\u4e3a\u201c\u52a8\u6001\u201d \u542c\u8d77\u6765\u5bf9\u4e00\u81f4\u6027\u8981\u6c42\u4e0d\u9ad8\uff0c\u800c\u66f4\u5728\u4e4e \u5ef6\u8fdf (3) sql \u6570\u636e\u5e93\u91cc\u53ea\u653e\u7eaf metadata(id, e.g topic id, item id, post id etc) \u8fd9\u6837\u53ef\u4ee5\u51cf\u5c11 DB read\/write bandwith cost \u628a\u5177\u4f53\u5185\u5bb9\u7684\u5206\u53d1\u5265\u79bb\u51fa\u53bb \u6682\u65f6\u8003\u8651\u8fd9\u4e48\u591a\u3002<\/p>\n
    \u4e00\u4e2a\u5f88\u597d\u7684\u6f14\u8bb2\u5168\u9762\u7684\u4ecb\u7ecd\u4e86 Twitter \u7684\u5f88\u591a\u5e74\u524d\u7684\u89e3\u51b3\u65b9\u6848\u3002
    Operations at Twitter: Scaling Beyond 100 Million Users”:                                                             <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : sugarkeek <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 10 \u4e07\u4e0d\u591a\u5427\uff0c\u53c8\u4e0d\u662f\u540c\u65f6\u5341\u4e07\u4e2a\u4eba\u5173\u6ce8\uff0c\u6dc5\u6dc5\u6ca5\u6ca5\u7684\u90a3\u51e0\u4e2a\u91cf\uff0c\u5e38\u89c1\u7684\u6570\u636e\u5e93\u90fd\u6ca1\u5565\u95ee\u9898                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : owenliang <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5b9e\u9645\u5de5\u7a0b\u4e0a\u4f1a\u7528 hbase\uff0c\u73b0\u5728\u4e5f\u53ef\u4ee5\u770b\u770b tidb \u4e86\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : hantsy <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u7528 key\/value \u6570\u636e\u5e93\u5566\uff0c\u6211\u662f\u641e\u4e0d\u61c2\u4e3a\u4ec0\u4e48\u56fd\u5185\u90fd\u662f\u559c\u6b22\u4ec0\u4e48\u4e1c\u897f\u90fd\u662f\u5f80 RDBMS \u91cc\u9762\u585e\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : BiteTheDust <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6709\u4e00\u79cd\u505a\u6cd5\u4f3c\u4e4e\u662f \u7ef4\u62a4\u7528\u6237\u7684\u65f6\u95f4\u7ebf \u5728\u4e00\u4e2a\u4eba\u53d1\u9001\u4e86\u52a8\u6001\u540e\u5411\u6240\u6709\u5173\u6ce8\u8005\u7684\u65f6\u95f4\u7ebf\u63d2\u5165\u6570\u636e                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : love <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u8001\u95ee\u9898\u4e86\uff0c\u4e00\u641c\u4e00\u5927\u628a\u3002\u6709\u63a8\u548c\u62c9\u4e8c\u79cd\uff0c\u4e00\u822c\u7528\u63a8\u662f\u4fdd\u9669\u505a\u6cd5\uff0c\u7528\u62c9\u4ee5\u540e\u53ef\u80fd\u4f1a\u51fa\u5927\u6027\u80fd\u95ee\u9898\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : areless <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 in \u914d\u5408 exists\uff0c\u5728\u5927\u7528\u6237\u4e0a\u4f7f\u7528 exists\uff0c10 \u4e07\u7528\u6237\u5e94\u8be5\u625b\u5f97\u4f4f\u3002\u4e0d\u8981\u7ed9\u9875\u7801\uff0c\u53ea\u6709\u4e0a\u4e00\u9875\u4e0b\u4e00\u9875\u4ee5\u53ca\u8d85\u65f6\u76f4\u63a5\u629b\u9519\uff0c\u6162\u67e5\u8be2\u72ec\u7acb\u5904\u7406\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : buliugu <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u65b0\u6d6a\u5fae\u535a\u8c8c\u4f3c\u662f\u5927\u89c4\u6a21\u4f7f\u7528 redis \u7684                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : chengxiao <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u5370\u8c61\u4e2d KV \u6570\u636e\u5e93\u5728\u56fd\u5185\u5927\u89c4\u6a21\u7684\u5174\u8d77\u548c\u4f7f\u7528,\u5c31\u662f\u56e0\u4e3a\u793e\u4ea4\u7f51\u7edc                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hambman <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @BiteTheDust \u6069\uff0c\u8fd9\u4e2a\u662f\u201c\u63a8\u201d\u6a21\u5f0f\uff0c\u7528\u6237\u5c11\u7684\u65f6\u5019\u4e5f\u53ef\u4ee5\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hambman <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @chengxiao @hantsy \u8fd9\u4e2a\u573a\u666f\uff0c\u8bf7\u95ee\u7528 key\/value store \u7684\u4f18\u52bf\u662f\u54ea\u65b9\u9762\uff1f \u8981\u4e24\u4e2a\u67e5\u8be2\uff0c\u7b2c\u4e00\u6b65\u5f97\u5230\u5173\u6ce8\u7684\u5bf9\u8c61\uff0c\u7b2c\u4e8c\u6b65\u67e5\u8be2\u8fd9\u4e9b\u5173\u6ce8\u5bf9\u8c61\u7684\u6587\u7ae0\u3002 \u662f\u91cf\u5927\u4ee5\u540e scale \u7684\u4f18\u52bf\u5417\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hambman <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @love \u6069\uff0c\u6211\u67e5\u8be2\u4e86\u4e00\u4e9b\u7ecf\u9a8c\u3002\u6211\u7406\u89e3\u662f\u53cd\u8fc7\u6765\uff1f\u5982\u679c\u4e00\u4e2a\u7528\u6237\u6709 1 \u4e07\u4eba\u5173\u6ce8\uff0c\u4ed6\u6bcf\u53d1\u4e00\u6761\u5e16\u5b50\u6570\u636e\u5e93\u8981\u63d2\u5165 1 \u4e07\u6761\u8bb0\u5f55\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hambman <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @areless \u8bf7\u95ee\u4e0d\u7ed9\u9875\u7801\u7684\u4f18\u52bf\u662f\uff1f\u6211\u5b9e\u73b0\u4e0a\u4e00\u9875\uff0c\u4e0b\u4e00\u9875\uff0c\u662f\u7528?page=(n-1) \u548c ?page=(n+1)\u7684\u65b9\u6cd5\uff0c\u548c\u9875\u7801\u672c\u8d28\u662f\u4e00\u6837\u7684\uff0c\u6709\u66f4\u597d\u7684\u65b9\u6cd5\u5417\uff1f                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : hambman <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @js8510 \u8c22\u8c22\u5efa\u8bae\uff0c\u6069\uff0c\u5e94\u8be5\u4f1a\u7528\u5230 2)\u548c 3 \uff09\uff0c\u5982\u679c\u6570\u636e\u91cf\u5927\u7684\u8bdd\u4e5f\u4f1a\u7528 sharding.                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
    \n
    \n
     \u8cc7\u6df1\u5927\u4f6c : love <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 @hambman \u5bf9\u5440\uff0c\u73b0\u5728\u6709\u6bcf\u4e2a\u4eba\u6709\u4e2a\u63a5\u53d7\u90ae\u7bb1\uff0c\u5927 V \u53d1\u4e2a\u5e16\u5c31\u662f\u7fa4\u53d1\uff0c\u5176\u5b9e\u53ea\u662f\u770b\u7740\u6709\u70b9\u53ef\u6015\uff0c\u6bd5\u7adf\u53c8\u4e0d\u662f\u4eba\u4eba\u90fd\u662f\u5927 V \u3002\u6bd4\u5982 10 \u4e07\u4e2a\u4eba\u6bcf\u4e2a\u4eba\u7684\u63a5\u6536\u961f\u5217\u6bcf\u5929\u4f1a\u6536\u5230 100 \u6761\u6d88\u606f\uff0c\u90a3\u76f8\u5f53\u4e8e\u4e00\u5929\u4e2d\u6bcf\u79d2\u53ea\u8981\u63d2\u5165 100 \u6761\u8bb0\u5f55\u5c31\u884c\u4e86\u3002                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    \u793e\u4ea4\u7f51\u7edc\u91cc\u7684\u5173\u6ce8\u5b9e\u73b0\uff08\u7c7b\u4f3c V2E…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/341223"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=341223"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/341223\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=341223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=341223"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=341223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}