{"id":50236,"date":"2023-10-24T08:43:07","date_gmt":"2023-06-14T23:24:19","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90cassandra%e3%80%91%e6%95%b0%e6%8d%ae%e8%a1%a8%e8%ae%be%e8%ae%a1%ef%bc%88%e4%b8%8d%e6%96%ad%e6%9b%b4%e6%96%b0%ef%bc%89\/"},"modified":"2024-01-15T13:11:05","modified_gmt":"2024-01-15T05:11:05","slug":"%e3%80%90cassandra%e3%80%91%e6%95%b0%e6%8d%ae%e8%a1%a8%e8%ae%be%e8%ae%a1%ef%bc%88%e4%b8%8d%e6%96%ad%e6%9b%b4%e6%96%b0%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90cassandra%e3%80%91%e6%95%b0%e6%8d%ae%e8%a1%a8%e8%ae%be%e8%ae%a1%ef%bc%88%e4%b8%8d%e6%96%ad%e6%9b%b4%e6%96%b0%ef%bc%89\/","title":{"rendered":"\u3010Cassandra\u3011\u6570\u636e\u8868\u8bbe\u8ba1\uff08\u4e0d\u65ad\u66f4\u65b0\uff09."},"content":{"rendered":"

Cassandra\u8868\u8bbe\u8ba1\u7684\u6ce8\u610f\u4e8b\u9879<\/h2>\n

\u4ee5\u6bcd\u8bed\u4e2d\u6587\u8fdb\u884c\u8f6c\u8ff0\uff1a<\/p>\n

\u5bf9\u4e8e\u8868\u683c\u8bbe\u8ba1\u7684\u8003\u8651\u8981\u70b9\u8fdb\u884c\u6982\u62ec\u6027\u603b\u7ed3…<\/p>\n

\u529f\u80fd\u6027\u7684\u4e8b\u60c5 de<\/h3>\n

\u8003\u8651\u5230RDB\u4e0d\u63d0\u4f9b\u50cfSQL\u4e00\u6837\u7684\u8868\u9879\u95f4\u8fde\u63a5\u529f\u80fd\uff0c
\n\u5982\u679c\u9700\u8981\u8fde\u63a5\u591a\u4e2a\u8868\u7684\u6570\u636e\uff0c\u5219\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u65b9\u6cd5\uff1a
\n\u00b7 \u5728\u5ba2\u6237\u7aef\u4ece\u591a\u4e2a\u8868\u4e2d\u8fdb\u884c\u8bfb\u53d6\uff0c\u5e76\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u8fdb\u884c\u8fde\u63a5\u3002
\n\u00b7 \u521b\u5efa\u4e0e\u8fde\u63a5\u7ed3\u679c\u5bf9\u5e94\u7684\u975e\u89c4\u8303\u5316\u8868\u3002
\n\u203b\u867d\u7136\u5728\u5e94\u7528\u7a0b\u5e8f\u4e2d\u8bfb\u53d6\u591a\u4e2a\u8868\u5e76\u8fdb\u884c\u5904\u7406\u4f1a\u5f88\u9ebb\u70e6\uff0c\u800c\u4e14\u53ef\u80fd\u5728\u5904\u7406\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u95ee\u9898\uff0c\u8fd8\u5b58\u5728\u6027\u80fd\u95ee\u9898\uff0c\u4f46\u5982\u679c\u80fd\u901a\u8fc7\u975e\u89c4\u8303\u5316\u6765\u5904\u7406\u90a3\u5c31\u66f4\u597d\u4e86\u3002<\/p>\n

\u53ea\u6709\u4e3b\u952e\u6216\u8005\u8f85\u52a9\u7d22\u5f15\u6307\u5b9a\u7684\u5217\u624d\u53ef\u4ee5\u5728”where”\u8bed\u53e5\u4e2d\u6307\u5b9a\u3002<\/p>\n

\u5728\u67e5\u8be2\u4e2d\u53ef\u7528\u7684\u6392\u5e8f\u4ec5\u7531\u4f7f\u7528CREATE TABLE\u547d\u4ee4\u6307\u5b9a\u7684\u805a\u7c07\u952e\u9009\u62e9\u51b3\u5b9a\u3002
\n\uff08SELECT\u8bed\u53e5\u652f\u6301ORDER BY\uff0c\u4f46\u4ec5\u9650\u4e8e\u6309\u7167\u6307\u5b9a\u7684\u805a\u7c07\u952e\u987a\u5e8f\u8fdb\u884c\u6392\u5e8f\uff0c\u65e0\u6cd5\u8fdb\u884c\u7c7b\u4f3c\u5173\u7cfb\u6570\u636e\u5e93\u7684\u4efb\u610f\u6392\u5e8f\u3002\uff09<\/p>\n

\u65e0\u6cd5\u4f7f\u7528\u805a\u7c7b\u952e\u5217\u7684\u5185\u5bb9\u6765\u201c\u53cd\u5411\u67e5\u627e\u201d\u5206\u533a\u952e\u5217\u9879\u76ee\u3002
\n\u21d2\u53ef\u4ee5\u51c6\u5907\u4e00\u4e2a\u7528\u4e8e\u53cd\u5411\u67e5\u627e\u7684\u67e5\u627e\u8868\u3002<\/p>\n

\u30fb\u4e3b\u952e\u5fc5\u987b\u662f\u552f\u4e00\u7684\u3002
\nCassandra\u59cb\u7ec8\u662fupsert\u7684\uff0c\u56e0\u6b64\u5982\u679c\u5076\u7136\u53d1\u751f\u76f8\u540c\u7684\u952e\u503c\uff0c\u9700\u8981\u5c0f\u5fc3\uff0c\u4ee5\u514d\u53d1\u751f\u9519\u8bef\u5e76\u88ab\u8986\u76d6\u3002
\n\u203b\u867d\u7136\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u8f7b\u91cf\u7ea7\u4e8b\u52a1\u6765\u907f\u514d\uff0c\u4f46\u4f1a\u5e26\u6765\u5f88\u5927\u7684\u8d1f\u62c5\u3002<\/p>\n

\u6027\u80fd\u65b9\u9762<\/h3>\n

\u5bf9\u4e8e\u8868\u683c\u7684\u89c4\u8303\u5316\uff08\u975e\u89c4\u8303\u5316\uff09\uff0c\u9700\u8981\u8003\u8651\u4f5c\u4e3a\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u7684\u7279\u6027\u3002
\n\u7531\u4e8e\u662f\u5206\u5e03\u5f0f\u6570\u636e\u5e93\u4e14\u4e0d\u652f\u6301\u8fde\u63a5\u64cd\u4f5c\uff0c\u56e0\u6b64\u5728\u8bfb\u53d6\u65b9\u9762\u6bd4\u5173\u7cfb\u578b\u6570\u636e\u5e93\u66f4\u7a81\u663e\u89c4\u8303\u5316\u7684\u4e0d\u8db3\u4e4b\u5904\u3002
\n\u4e3a\u4e86\u907f\u514d\u591a\u6b21\u8bfb\u53d6\uff0c\u53ef\u4ee5\u5c06\u5176\u4f5c\u4e3a\u4e0e\u53d1\u51fa\u67e5\u8be2\u5bf9\u5e94\u7684\u67b6\u6784\u3002
\n\u5173\u7cfb\u578b\u6570\u636e\u5e93\uff1a\u6570\u636e\u5efa\u6a21 \u2192 \u67e5\u8be2\u521b\u5efa
\nCassandra\uff1a\u67e5\u8be2\u8def\u5f84\u5efa\u6a21 \u2192 \u652f\u6301\u6a21\u578b\u7684\u8868\u683c\u8bbe\u8ba1<\/p>\n

\u5e0c\u671bpartition key\u5177\u5907\u5c06\u6570\u636e\u5747\u5300\u5206\u914d\u5230\u6bcf\u4e2a\u8282\u70b9\u7684\u529f\u80fd\u3002
\n\u5f53\u5728\u5355\u4e00partition\u4e0a\u9891\u7e41\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\u65f6\uff0c\u4f1a\u5bfc\u81f4\u8282\u70b9\u8d1f\u8f7d\u4e0d\u5e73\u8861\u3002<\/p>\n

\u30fb\u4e0d\u8981\u521b\u5efa\u8fc7\u5927\u7684\u5206\u533a\u3002
\n\u30fb\u4f7f\u7528\u805a\u7c07\u952e\u5411\u884c\u4e2d\u6dfb\u52a0\u884c\uff0c\u53ef\u80fd\u5bfc\u81f4\u5206\u533a\u4e0d\u65ad\u589e\u957f\u3002
\n\u5206\u533a\u5185\u7684\u5217\uff08\u5355\u5143\u683c\uff09\u4e0a\u9650\u4e3a20\u4ebf\u4e2a\uff0c\u4f46\u5efa\u8bae\u4fdd\u6301\u5728100MB\u4ee5\u4e0b\u3002
\n\u30fb\u82e5\u5206\u533a\u8fc7\u5927\uff0c\u53ef\u80fd\u4f1a\u5bf9\u4fee\u590d\u3001\u6570\u636e\u6d41\u548c\u8bfb\u53d6\u6027\u80fd\u9020\u6210\u95ee\u9898\u3002<\/p>\n

\u6839\u636eI\/O\u6a21\u5f0f\uff08\u8bfb\u53d6\/\u5199\u5165\uff09\uff0c\u8003\u8651\u5230Compaction\u7b56\u7565\u7684\u4f7f\u7528\u60c5\u51b5\uff0c\u6211\u4eec\u5c06\u8868\u8fdb\u884c\u5206\u5272\u3002
\n\uff08\u7531\u4e8eCompaction\u7b56\u7565\u662f\u57fa\u4e8e\u6bcf\u4e2aSStable\uff08\u6bcf\u4e2a\u8868\uff09\u7684\u8bbe\u7f6e\u3002\uff09<\/p>\n

\u9002\u7528\u4e8e\u57fa\u6570\u6781\u9ad8\u7684\u5217\u7684\u6b21\u8981\u7d22\u5f15\u6548\u7387\u4e0d\u9ad8\u3002\u6b21\u8981\u7d22\u5f15\u7684\u641c\u7d22\u5728\u6240\u6709\u8282\u70b9\u4e0a\u8fdb\u884c\uff0c\u4f46\u662f\u5982\u679c\u57fa\u6570\u5f88\u9ad8\uff0c\u4f8b\u5982\u53ea\u83b7\u53d6\u4e00\u4e2a\u5206\u533a\uff08\u5728\u5927\u591a\u6570\u8282\u70b9\u4e0a\u4e0d\u4f1a\u627e\u5230\u76ee\u6807\uff09\uff0c\u6548\u7387\u5c31\u4e0d\u9ad8\u3002<\/p>\n

\u8bf7\u6ce8\u610f\uff0c\u5f53\u6b21\u8981\u7d22\u5f15\u7684\u57fa\u6570\u8f83\u4f4e\u65f6\uff0c\u53ef\u80fd\u4f1a\u751f\u6210\u5927\u91cf\u7684\u54cd\u5e94\u7ed3\u679c\u3002<\/p>\n

\u5982\u679c\u6b21\u8981\u7d22\u5f15\u6548\u7387\u8f83\u4f4e\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528\u67e5\u627e\u8868\u3002
\n\u6ce8\u610f\uff0c\u7531\u4e8e\u6ca1\u6709\u63d0\u4f9b\u8868\u95f4\u7684\u5f15\u7528\u4e00\u81f4\u6027\u673a\u5236\uff0c\u9700\u8981\u8003\u8651\u6574\u4e2a\u4e00\u81f4\u6027\u7684\u95ee\u9898\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

Cassandra\u8868\u8bbe\u8ba1\u7684\u6ce8\u610f\u4e8b\u9879 \u4ee5\u6bcd\u8bed\u4e2d\u6587\u8fdb\u884c\u8f6c\u8ff0\uff1a \u5bf9\u4e8e\u8868\u683c\u8bbe\u8ba1\u7684\u8003\u8651\u8981\u70b9\u8fdb\u884c\u6982\u62ec\u6027\u603b\u7ed3… […]<\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-50236","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u3010Cassandra\u3011\u6570\u636e\u8868\u8bbe\u8ba1\uff08\u4e0d\u65ad\u66f4\u65b0\uff09. - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010cassandra\u3011\u6570\u636e\u8868\u8bbe\u8ba1\uff08\u4e0d\u65ad\u66f4\u65b0\uff09\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010Cassandra\u3011\u6570\u636e\u8868\u8bbe\u8ba1\uff08\u4e0d\u65ad\u66f4\u65b0\uff09.\" \/>\n<meta property=\"og:description\" content=\"Cassandra\u8868\u8bbe\u8ba1\u7684\u6ce8\u610f\u4e8b\u9879 \u4ee5\u6bcd\u8bed\u4e2d\u6587\u8fdb\u884c\u8f6c\u8ff0\uff1a \u5bf9\u4e8e\u8868\u683c\u8bbe\u8ba1\u7684\u8003\u8651\u8981\u70b9\u8fdb\u884c\u6982\u62ec\u6027\u603b\u7ed3… […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u3010cassandra\u3011\u6570\u636e\u8868\u8bbe\u8ba1\uff08\u4e0d\u65ad\u66f4\u65b0\uff09\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-06-14T23:24:19+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-01-15T05:11:05+00:00\" \/>\n<meta name=\"author\" content=\"\u79d1, \u9896\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u79d1, \u9896\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90cassandra%e3%80%91%e6%95%b0%e6%8d%ae%e8%a1%a8%e8%ae%be%e8%ae%a1%ef%bc%88%e4%b8%8d%e6%96%ad%e6%9b%b4%e6%96%b0%ef%bc%89\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/%e3%80%90cassandra%e3%80%91%e6%95%b0%e6%8d%ae%e8%a1%a8%e8%ae%be%e8%ae%a1%ef%bc%88%e4%b8%8d%e6%96%ad%e6%9b%b4%e6%96%b0%ef%bc%89\/\",\"name\":\"\u3010Cassandra\u3011\u6570\u636e\u8868\u8bbe\u8ba1\uff08\u4e0d\u65ad\u66f4\u65b0\uff09. - 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