{"id":71105,"date":"2026-10-21T10:12:17","date_gmt":"2026-10-21T02:12:17","guid":{"rendered":"https:\/\/www.dataplugs.com\/read-replicas-for-scaling-database-workloads-on-bare-metal\/"},"modified":"2026-10-21T10:14:52","modified_gmt":"2026-10-21T02:14:52","slug":"read-replicas-for-scaling-database-workloads-on-bare-metal","status":"publish","type":"post","link":"https:\/\/www.dataplugs.com\/tc\/read-replicas-for-scaling-database-workloads-on-bare-metal\/","title":{"rendered":"\u88f8\u6a5f\u4f3a\u670d\u5668\u8b80\u53d6\u8907\u672c\uff0c\u64f4\u5c55\u8cc7\u6599\u5eab\u5de5\u4f5c\u8ca0\u8f09\u6307\u5357"},"content":{"rendered":"<p>\u8b80\u53d6\u8907\u672c\u662f\u5f9e\u4e3b\u8cc7\u6599\u5eab\u91cd\u64ad\u8b8a\u66f4\u3001\u4e26\u8655\u7406\u552f\u8b80\u67e5\u8a62\u7684\u6b21\u8981\u8cc7\u6599\u5eab\u5be6\u4f8b\u3002\u4f01\u696d\u53ef\u4ee5\u628a\u5831\u8868\u3001\u641c\u5c0b\u3001\u5100\u8868\u677f\u53ca\u61c9\u7528\u7a0b\u5f0f\u7684\u8b80\u53d6\u6d41\u91cf\u5206\u6563\u5230\u8907\u672c\uff0c\u800c\u4e0d\u5fc5\u6539\u8b8a\u4e3b\u8cc7\u6599\u5eab\u7684\u5beb\u5165\u8def\u5f91\u3002<\/p>\n<p>\u5728\u88f8\u6a5f\u4f3a\u670d\u5668\u4e0a\uff0c\u5718\u968a\u53ef\u4ee5\u63a7\u5236\u8cc7\u6599\u5eab\u7bc0\u9ede\u7684 CPU\u3001\u8a18\u61b6\u9ad4\u3001NVMe \u5132\u5b58\u3001\u7db2\u7d61\u8def\u5f91\u53ca\u4f5c\u696d\u7cfb\u7d71\u8a2d\u5b9a\uff0c\u6709\u52a9\u6309\u5be6\u969b\u8ca0\u8f09\u4f5c\u51fa\u8f03\u53ef\u9810\u6e2c\u7684\u5bb9\u91cf\u898f\u5283\uff1b\u4f46\u8b80\u53d6\u8907\u672c\u4ecd\u9700\u8981\u8def\u7531\u3001\u4e00\u81f4\u6027\u898f\u5247\u3001\u5ef6\u9072\u76e3\u5bdf\u3001\u6545\u969c\u5207\u63db\u6d41\u7a0b\u53ca\u7368\u7acb\u5099\u4efd\u3002<\/p>\n<h2>\u8b80\u53d6\u8907\u672c\u5982\u4f55\u64f4\u5c55\u8cc7\u6599\u5eab\u5de5\u4f5c\u8ca0\u8f09<\/h2>\n<p>\u4e3b\u8cc7\u6599\u5eab\u7e7c\u7e8c\u8ca0\u8cac\u5beb\u5165\uff0c\u800c\u4e00\u500b\u6216\u591a\u500b\u8907\u672c\u5247\u91cd\u64ad\u4ea4\u6613\u65e5\u8a8c\u4e26\u8655\u7406\u5408\u9069\u7684\u8b80\u53d6\u8981\u6c42\u3002\u628a\u6307\u5b9a\u67e5\u8a62\u79fb\u96e2\u4e3b\u8cc7\u6599\u5eab\uff0c\u53ef\u4ee5\u6e1b\u5c11\u8cc7\u6e90\u7af6\u722d\u3001\u4fdd\u8b77\u5beb\u5165\u5ef6\u9072\uff0c\u4e26\u70ba\u5831\u8868\u5de5\u4f5c\u63d0\u4f9b\u7368\u7acb\u7684\u5bb9\u91cf\u8def\u5f91\u3002<\/p>\n<ul>\n<li>\u8cc7\u6599\u5eab\u5bc6\u96c6\u578b\u5de5\u4f5c\u8ca0\u8f09\u4e0d\u53ea\u53d6\u6c7a\u65bc\u6838\u5fc3\u6578\u91cf\u3002Dataplugs \u7684<a href=\"https:\/\/www.dataplugs.com\/tc\/how-to-design-high-iops-servers-for-database-heavy-workloads\/\">\u9ad8 IOPS \u8cc7\u6599\u5eab\u5de5\u4f5c\u8ca0\u8f09\u4f3a\u670d\u5668\u8a2d\u8a08\u6307\u5357<\/a>\u6587\u7ae0\u8aaa\u660e\u5de5\u4f5c\u8ca0\u8f09\u5206\u6790\u3001IOPS\u3001\u8b80\u5beb\u6bd4\u4f8b\uff0c\u4ee5\u53ca\u8b80\u53d6\u8907\u672c\u5982\u4f55\u5206\u64d4\u5206\u6790\u67e5\u8a62\u3002<\/li>\n<li>\u9700\u8981\u5373\u6642\u8cc7\u6599\u6642\uff0c\u628a\u5beb\u5165\u53ca\u5beb\u5165\u5f8c\u7acb\u5373\u8b80\u53d6\u7684\u64cd\u4f5c\u7559\u5728\u4e3b\u8cc7\u6599\u5eab<\/li>\n<li>\u900f\u904e\u61c9\u7528\u7a0b\u5f0f\u6216\u8def\u7531\u5c64\uff0c\u628a\u5408\u9069\u7684\u552f\u8b80\u8981\u6c42\u50b3\u9001\u5230\u8907\u672c<\/li>\n<li>\u628a\u5831\u8868\u3001\u641c\u5c0b\u53ca\u5100\u8868\u677f\u6d41\u91cf\u8207\u4ea4\u6613\u67e5\u8a62\u5206\u958b\u8655\u7406<\/li>\n<li>\u7576\u8b80\u53d6\u9700\u6c42\u8d85\u51fa\u55ae\u4e00\u7bc0\u9ede\u7684\u5be6\u969b\u5bb9\u91cf\u6642\uff0c\u518d\u589e\u52a0\u8907\u672c<\/li>\n<li>\u9664\u975e\u8cc7\u6599\u5eab\u53ca\u8def\u7531\u8a2d\u8a08\u53e6\u6709\u4fdd\u8b49\uff0c\u5426\u5247\u61c9\u628a\u8907\u672c\u8996\u70ba\u6700\u7d42\u4e00\u81f4<\/li>\n<\/ul>\n<h2>\u8b80\u53d6\u8def\u7531\u53ca\u4e00\u81f4\u6027\u9078\u64c7<\/h2>\n<p>\u53ea\u6709\u5728\u61c9\u7528\u7a0b\u5f0f\u628a\u5b89\u5168\u7684\u67e5\u8a62\u50b3\u9001\u5230\u8907\u672c\u6642\uff0c\u8907\u672c\u624d\u6703\u5e36\u4f86\u6548\u76ca\u3002\u8def\u7531\u53ef\u4ee5\u5728\u61c9\u7528\u7a0b\u5f0f\u3001\u8cc7\u6599\u5eab\u4ee3\u7406\u6216\u9023\u7dda\u6c60\u9032\u884c\uff0c\u4f46\u5fc5\u9808\u6e05\u695a\u5340\u5206\u552f\u8b80\u64cd\u4f5c\uff0c\u4e26\u8a02\u5b9a\u53ef\u63a5\u53d7\u7684\u8cc7\u6599\u5ef6\u9072\u7a0b\u5ea6\u3002<\/p>\n<ul>\n<li>\u8def\u7531\u6c7a\u5b9a\u4e5f\u6703\u5f71\u97ff\u56de\u61c9\u6642\u9593\u76ee\u6a19\u3002Dataplugs \u7684<a href=\"https:\/\/www.dataplugs.com\/tc\/how-can-you-optimize-storage-latency-for-transaction-intensive-applications\/\">\u5982\u4f55\u512a\u5316\u4ea4\u6613\u5bc6\u96c6\u578b\u61c9\u7528\u7684\u5132\u5b58\u5ef6\u9072<\/a>\u6587\u7ae0\u8aaa\u660e\u8abf\u6574\u4ea4\u6613\u5bc6\u96c6\u578b\u7cfb\u7d71\u6642\uff0c\u61c9\u628a\u5132\u5b58\u5ef6\u9072\u3001\u8b80\u53d6\u8907\u672c\u53ca\u67e5\u8a62\u884c\u70ba\u4e00\u4f75\u8003\u616e\u3002<\/li>\n<li>\u5148\u5b9a\u7fa9\u6bcf\u9805\u8981\u6c42\u662f\u5426\u9700\u8981\u5f37\u4e00\u81f4\u6027\uff0c\u6216\u53ef\u4ee5\u5bb9\u8a31\u77ed\u66ab\u5ef6\u9072<\/li>\n<li>\u8b80\u53d6\u5f8c\u7acb\u5373\u5beb\u5165\u7684\u6d41\u7a0b\u61c9\u7559\u5728\u4e3b\u8cc7\u6599\u5eab\uff0c\u6216\u7b49\u5f85\u8907\u672c\u8ffd\u4e0a\u9032\u5ea6<\/li>\n<li>\u4f7f\u7528\u9023\u7dda\u6c60\uff0c\u907f\u514d\u8def\u7531\u8b8a\u66f4\u5efa\u7acb\u904e\u591a\u4e0d\u5fc5\u8981\u7684\u8cc7\u6599\u5eab\u9023\u7dda<\/li>\n<li>\u907f\u514d\u9577\u6642\u9593\u5831\u8868\u8207\u4f4e\u5ef6\u9072\u8b80\u53d6\u5728\u540c\u4e00\u8907\u672c\u4e0a\u4e92\u76f8\u7af6\u722d<\/li>\n<li>\u6e2c\u8a66\u8907\u672c\u5ef6\u9072\u3001\u7dad\u8b77\u53ca\u7bc0\u9ede\u79fb\u51fa\u8def\u7531\u6c60\u6642\u7684\u6d41\u91cf\u8655\u7406<\/li>\n<\/ul>\n<h2>\u88f8\u6a5f\u4f3a\u670d\u5668\u8b80\u53d6\u8907\u672c\u7684\u5bb9\u91cf\u898f\u5283<\/h2>\n<p>\u8907\u672c\u540c\u6642\u9700\u8981\u8655\u7406\u4ea4\u6613\u65e5\u8a8c\u91cd\u64ad\u53ca\u5206\u914d\u5230\u7684\u8b80\u53d6\u67e5\u8a62\uff0c\u56e0\u6b64\u5bb9\u91cf\u61c9\u6309\u8b80\u5beb\u6bd4\u4f8b\u3001\u8cc7\u6599\u96c6\u3001\u5de5\u4f5c\u96c6\u5927\u5c0f\u3001\u67e5\u8a62\u7d44\u5408\u3001\u5c16\u5cf0\u9023\u7dda\u6578\u53ca\u5fa9\u539f\u76ee\u6a19\u898f\u5283\uff0c\u800c\u4e0d\u80fd\u53ea\u770b\u5e73\u5747 CPU \u4f7f\u7528\u7387\u3002<\/p>\n<ul>\n<li>\u6d3b\u52d5\u6216\u5831\u8868\u6642\u6bb5\u53ef\u80fd\u4ee4\u8b80\u53d6\u9700\u6c42\u7a81\u7136\u589e\u52a0\u3002Dataplugs \u7684<a href=\"https:\/\/www.dataplugs.com\/tc\/seasonal-traffic-management-resource-allocation\/\">\u5b63\u7bc0\u6027\u7db2\u7ad9\u6d41\u91cf\u9ad8\u5cf0\u7684\u8cc7\u6e90\u5206\u914d\u512a\u5316<\/a>\u6587\u7ae0\u8aaa\u660e\u61c9\u4ee5\u91cf\u5ea6\u6240\u5f97\u7684 CPU\u3001\u8a18\u61b6\u9ad4\u3001\u5132\u5b58\u53ca\u983b\u5bec\u9700\u6c42\u898f\u5283\u5c08\u5c6c\u57fa\u790e\u8a2d\u65bd\uff0c\u800c\u4e0d\u662f\u53ea\u6309\u5e73\u5747\u503c\u4f30\u7b97\u3002<\/li>\n<li>\u70ba\u67e5\u8a62\u57f7\u884c\u3001\u4ea4\u6613\u65e5\u8a8c\u91cd\u64ad\u53ca\u7dad\u8b77\u5de5\u4f5c\u9810\u7559 CPU \u91cf<\/li>\n<li>\u70ba\u5de5\u4f5c\u96c6\u3001\u8cc7\u6599\u5eab\u5feb\u53d6\u3001\u9023\u7dda\u6c60\u53ca\u4f5c\u696d\u7cfb\u7d71\u5feb\u53d6\u5206\u914d\u8a18\u61b6\u9ad4<\/li>\n<li>\u8cc7\u6599\u6a94\u6848\u3001\u4ea4\u6613\u65e5\u8a8c\u53ca\u66ab\u5b58\u5de5\u4f5c\u4f7f\u7528\u4f4e\u5ef6\u9072 NVMe \u5132\u5b58<\/li>\n<li>\u983b\u5bec\u9700\u61c9\u4ed8\u8907\u5beb\u3001\u5ba2\u6236\u7aef\u8b80\u53d6\u3001\u5099\u4efd\u53ca\u8907\u672c\u91cd\u5efa<\/li>\n<li>\u70ba\u6545\u969c\u5207\u63db\u3001\u91cd\u5efa\u7d22\u5f15\u3001vacuum \u53ca\u7a81\u7136\u7684\u8b80\u53d6\u9ad8\u5cf0\u4fdd\u7559\u5bb9\u91cf\u9918\u88d5<\/li>\n<\/ul>\n<p>Tip: \u61c9\u4f7f\u7528\u6700\u5927\u800c\u5408\u7406\u7684\u8cc7\u6599\u96c6\u53ca\u67e5\u8a62\u9ad8\u5cf0\u9032\u884c\u6e2c\u8a66\u3002\u8907\u672c\u5728\u5e73\u5747\u8ca0\u8f09\u4e0b\u770b\u4f3c\u5145\u8db3\uff0c\u4ecd\u53ef\u80fd\u5728\u91cd\u64ad\u3001\u5831\u8868\u6216\u91cd\u5efa\u671f\u9593\u843d\u5f8c\u3002<\/p>\n<h2>\u8907\u5beb\u5ef6\u9072\u53ca\u8cc7\u6599\u65b0\u9bae\u5ea6\u76e3\u5bdf<\/h2>\n<ul>\n<li>\u8907\u5beb\u5ef6\u9072\u4e0d\u53ea\u662f\u57fa\u790e\u8a2d\u65bd\u6307\u6a19\uff0c\u4e5f\u6703\u76f4\u63a5\u5f71\u97ff\u7528\u6236\u770b\u5230\u7684\u8cc7\u6599\u3002\u8907\u672c\u5373\u4f7f\u4fdd\u6301\u9023\u7dda\uff0c\u5df2\u5957\u7528\u7684\u8cc7\u6599\u4ecd\u53ef\u80fd\u4e0d\u5920\u65b0\uff0c\u672a\u80fd\u652f\u63f4\u5100\u8868\u677f\u3001\u641c\u5c0b\u7d50\u679c\u6216\u71df\u904b\u6c7a\u7b56\u3002\u56e0\u6b64\u61c9\u540c\u6642\u76e3\u5bdf\u8907\u5beb\u6d41\u7a0b\uff0c\u4ee5\u53ca\u61c9\u7528\u7a0b\u5f0f\u5be6\u969b\u53d6\u5f97\u7684\u8cc7\u6599\u65b0\u9bae\u5ea6\u3002<\/li>\n<li>\u53ef\u5229\u7528\u4ea4\u6613\u65e5\u8a8c\u4f4d\u7f6e\u3001\u91cd\u64ad\u6642\u9593\u3001\u4f47\u5217\u5927\u5c0f\u3001\u67e5\u8a62\u5ef6\u9072\u53ca\u932f\u8aa4\u7387\u627e\u51fa\u8907\u672c\u843d\u5f8c\u7684\u539f\u56e0\u3002\u544a\u8b66\u9580\u6abb\u61c9\u6309\u5de5\u4f5c\u8ca0\u8f09\u8a2d\u5b9a\uff1a\u5206\u6790\u67e5\u8a62\u6216\u53ef\u63a5\u53d7\u5e7e\u79d2\u7684\u5ef6\u9072\uff0c\u4f46\u5eab\u5b58\u6216\u5e33\u6236\u6d41\u7a0b\u53ef\u80fd\u4e0d\u80fd\u63a5\u53d7\u3002<\/li>\n<li>\u5728\u8cc7\u6599\u5eab\u652f\u63f4\u7684\u60c5\u6cc1\u4e0b\uff0c\u540c\u6642\u4ee5\u6642\u9593\u53ca\u65e5\u8a8c\u6578\u91cf\u91cf\u5ea6\u5ef6\u9072<\/li>\n<li>\u8ffd\u8e64\u91cd\u64ad\u901f\u5ea6\u3001\u4f47\u5217\u589e\u9577\u3001\u5132\u5b58\u5ef6\u9072\u53ca\u8907\u672c CPU 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split-brain \u4e3b\u8cc7\u6599\u5eab\u3002\u6545\u969c\u56de\u5fa9\u53ca\u8907\u672c\u91cd\u5efa\u6b65\u9a5f\u4e5f\u61c9\u8a18\u9304\u5728\u540c\u4e00\u4efd\u64cd\u4f5c\u624b\u518a\u3002<\/li>\n<li>\u6e05\u695a\u5b9a\u7fa9\u8ab0\u6216\u751a\u9ebc\u5de5\u5177\u6709\u6b0a\u63d0\u5347\u8907\u672c<\/li>\n<li>\u5141\u8a31\u65b0\u5beb\u5165\u8005\u904b\u4f5c\u524d\uff0c\u5148\u9694\u96e2\u6216\u570d\u5835\u820a\u4e3b\u8cc7\u6599\u5eab<\/li>\n<li>\u4f7f\u7528\u7a69\u5b9a\u7684\u61c9\u7528\u7a0b\u5f0f\u7aef\u9ede\u3001\u4ee3\u7406\u6216\u53d7\u63a7 DNS 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