{"id":272171,"date":"2021-01-11T21:22:17","date_gmt":"2021-01-11T13:22:17","guid":{"rendered":"http:\/\/4563.org\/?p=272171"},"modified":"2021-01-11T21:22:17","modified_gmt":"2021-01-11T13:22:17","slug":"%e4%b8%8d%e6%87%82%e5%b0%b1%e9%97%ae%ef%bc%9a%e4%bb%80%e4%b9%88%e6%97%b6%e5%80%99%e9%9c%80%e8%a6%81-sync-directory%ef%bc%9f","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=272171","title":{"rendered":"\u4e0d\u61c2\u5c31\u95ee\uff1a\u4ec0\u4e48\u65f6\u5019\u9700\u8981 sync directory\uff1f"},"content":{"rendered":"
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\u4e0d\u61c2\u5c31\u95ee\uff1a\u4ec0\u4e48\u65f6\u5019\u9700\u8981 sync directory\uff1f <\/h1>\n

<\/p>\n

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\u8cc7\u6df1\u5927\u4f6c : NoBugDie <\/span> <\/i> 6<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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\u5728\u521b\u5efa\u6587\u4ef6\u3001\u91cd\u547d\u540d\u7b49\u9700\u8981\u4fee\u6539\u76ee\u5f55\u6587\u4ef6\u7684\u6587\u4ef6\u5217\u8868\u6570\u636e\u7684\u64cd\u4f5c\u4e4b\u540e\uff0c\u9700\u8981\u4e0d\u9700\u8981\u8fdb\u884c sync directory \u5462\uff1f<\/p>\n

\u5177\u4f53\u5230 LevelDB \u7684\u5b9e\u73b0\uff0c\u5728 flush manifest \u6587\u4ef6\u7684\u65f6\u5019\uff0c\u4f1a\u8fdb\u884c sync directory \u64cd\u4f5c\uff0c\u5927\u81f4\u539f\u56e0\u5728\u6ce8\u91ca\u4e2d\u6709\u63d0\u5230\uff0c\u662f\u4e3a\u4e86\u786e\u4fdd manifest \u4e2d\u5f15\u7528\u7684\u6587\u4ef6\u5728\u6587\u4ef6\u7cfb\u7edf\u4e2d\u5b58\u5728\u3002<\/p>\n

\u7136\u800c\u5728\u521b\u5efa WAL \u6587\u4ef6\u65f6\uff0c\u5e76\u6ca1\u6709\u4efb\u4f55 sync directory \u7684\u64cd\u4f5c\u3002\u5982\u6b64\uff0c\u662f\u5426\u4f1a\u56e0\u4e3a\u670d\u52a1\u5668\u5b95\u673a\u9020\u6210\u6570\u636e\u4e22\u5931\u5462\uff1f\u867d\u7136\u73b0\u6709\u7684\u65e5\u5fd7\u6587\u4ef6\u7cfb\u7edf\u4f3c\u4e4e\u53ef\u4ee5\u901a\u8fc7\u91cd\u505a\u65e5\u5fd7\u6062\u590d\u6587\u4ef6\u7cfb\u7edf\u7684\u5143\u4fe1\u606f\u3002\u90a3\u5728\u975e\u65e5\u5fd7\u6587\u4ef6\u7cfb\u7edf\u4e0a\uff0c\u5c82\u4e0d\u662f\u51c9\u51c9\uff1f<\/p>\n

LevelDB \u521b\u5efa WAL \u6587\u4ef6\u7684\u4ee3\u7801\uff1a https:\/\/github.com\/google\/leveldb\/blob\/6721eda0b46654d3531b4a0a00c90dc659b337d6\/db\/db_impl.cc#L1360<\/p>\n

LevelDB flush manifest \u6587\u4ef6\u7684\u4ee3\u7801\uff1a https:\/\/github.com\/google\/leveldb\/blob\/6721eda0b46654d3531b4a0a00c90dc659b337d6\/util\/env_posix.cc#L306<\/p>\n<\/p><\/div>\n

\u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (2<\/span>) <\/div>\n
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  • \n
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    \u8cc7\u6df1\u5927\u4f6c : littlewing <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    \u4f1a\u7684\uff0c\u6240\u4ee5\u7528 rocksdb \u5427 <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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    \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : NoBugDie <\/span> <\/div>\n
    <\/i> <\/span> <\/div>\n<\/p><\/div>\n
    @littlewing rocksdb \u4ee3\u7801\u6bd4\u8f83\u591a,\u4f46\u662f\u6211\u4e5f\u6ca1\u627e\u5230\u76f8\u5173\u903b\u8f91… <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"

    \u4e0d\u61c2\u5c31\u95ee\uff1a\u4ec0\u4e48\u65f6\u5019\u9700\u8981 sync …<\/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\/272171"}],"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=272171"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/272171\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=272171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=272171"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=272171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}