{"id":186448,"date":"2024-11-11T06:00:25","date_gmt":"2024-11-10T22:00:25","guid":{"rendered":"https:\/\/server.hk\/cnblog\/186448\/"},"modified":"2024-11-11T06:00:26","modified_gmt":"2024-11-10T22:00:26","slug":"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%82%e9%96%b1%ef%bc%8c%e5%bf%ab%e9%80%9f%e6%9c%ac%e5%9c%b0%e5%ad%98%e5%84%b2%e6%95%b8%e6%93%9a%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%ac%e5%9c%b0%e8%a8%82%e9%96%b1","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/186448\/","title":{"rendered":"\u6578\u64da\u5eab\u8a02\u95b1\uff0c\u5feb\u901f\u672c\u5730\u5b58\u5132\u6578\u64da\uff08\u6578\u64da\u5eab\u672c\u5730\u8a02\u95b1\uff09"},"content":{"rendered":"<h1 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%82%e9%96%b1%ef%bc%8c%e5%bf%ab%e9%80%9f%e6%9c%ac%e5%9c%b0%e5%ad%98%e5%84%b2%e6%95%b8%e6%93%9a%ef%bc%88%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%ac%e5%9c%b0%e8%a8%82%e9%96%b1-ocWOnpFaAa\">\u6578\u64da\u5eab\u8a02\u95b1\uff0c\u5feb\u901f\u672c\u5730\u5b58\u5132\u6578\u64da\uff08\u6578\u64da\u5eab\u672c\u5730\u8a02\u95b1\uff09<\/h1>\n<p>\u5728\u7576\u4eca\u6578\u64da\u9a45\u52d5\u7684\u4e16\u754c\u4e2d\uff0c\u6578\u64da\u5eab\u7684\u7ba1\u7406\u548c\u5b58\u5132\u8b8a\u5f97\u8d8a\u4f86\u8d8a\u91cd\u8981\u3002\u96a8\u8457\u4f01\u696d\u5c0d\u6578\u64da\u7684\u4f9d\u8cf4\u7a0b\u5ea6\u52a0\u6df1\uff0c\u6578\u64da\u5eab\u7684\u6027\u80fd\u548c\u53ef\u7528\u6027\u6210\u70ba\u4e86\u95dc\u9375\u56e0\u7d20\u3002\u6578\u64da\u5eab\u8a02\u95b1\uff08Database Subscription\uff09\u662f\u4e00\u7a2e\u6709\u6548\u7684\u6578\u64da\u7ba1\u7406\u7b56\u7565\uff0c\u80fd\u5920\u5be6\u73fe\u5feb\u901f\u7684\u672c\u5730\u5b58\u5132\u6578\u64da\uff0c\u4e26\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u8a2a\u554f\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e6%95%b8%e6%93%9a%e5%ba%ab%e8%a8%82%e9%96%b1%ef%bc%9f-ocWOnpFaAa\">\u4ec0\u9ebc\u662f\u6578\u64da\u5eab\u8a02\u95b1\uff1f<\/h2>\n<p>\u6578\u64da\u5eab\u8a02\u95b1\u662f\u4e00\u7a2e\u6578\u64da\u540c\u6b65\u6280\u8853\uff0c\u5141\u8a31\u7528\u6236\u5728\u672c\u5730\u6578\u64da\u5eab\u4e2d\u63a5\u6536\u4f86\u81ea\u9060\u7a0b\u6578\u64da\u5eab\u7684\u6578\u64da\u66f4\u65b0\u3002\u9019\u7a2e\u6280\u8853\u901a\u5e38\u7528\u65bc\u9700\u8981\u5be6\u6642\u6578\u64da\u66f4\u65b0\u7684\u61c9\u7528\u5834\u666f\uff0c\u4f8b\u5982\u91d1\u878d\u670d\u52d9\u3001\u96fb\u5b50\u5546\u52d9\u548c\u793e\u4ea4\u5a92\u9ad4\u5e73\u53f0\u3002\u901a\u904e\u6578\u64da\u5eab\u8a02\u95b1\uff0c\u7528\u6236\u53ef\u4ee5\u78ba\u4fdd\u5176\u672c\u5730\u6578\u64da\u5eab\u59cb\u7d42\u4fdd\u6301\u6700\u65b0\u72c0\u614b\uff0c\u5f9e\u800c\u63d0\u9ad8\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u7528\u6236\u9ad4\u9a57\u3002<\/p>\n<h2 id=\"%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%ac%e5%9c%b0%e8%a8%82%e9%96%b1%e7%9a%84%e5%84%aa%e5%8b%a2-ocWOnpFaAa\">\u6578\u64da\u5eab\u672c\u5730\u8a02\u95b1\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u5be6\u6642\u6578\u64da\u66f4\u65b0\uff1a<\/strong>\u6578\u64da\u5eab\u8a02\u95b1\u5141\u8a31\u7528\u6236\u5728\u6578\u64da\u8b8a\u66f4\u6642\u7acb\u5373\u63a5\u6536\u66f4\u65b0\uff0c\u9019\u5c0d\u65bc\u9700\u8981\u5373\u6642\u53cd\u61c9\u7684\u61c9\u7528\u81f3\u95dc\u91cd\u8981\u3002<\/li>\n<li><strong>\u6e1b\u5c11\u5ef6\u9072\uff1a<\/strong>\u901a\u904e\u5728\u672c\u5730\u5b58\u5132\u6578\u64da\uff0c\u7528\u6236\u53ef\u4ee5\u6e1b\u5c11\u5c0d\u9060\u7a0b\u6578\u64da\u5eab\u7684\u67e5\u8a62\u6b21\u6578\uff0c\u5f9e\u800c\u964d\u4f4e\u5ef6\u9072\uff0c\u63d0\u9ad8\u61c9\u7528\u6027\u80fd\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u53ef\u9760\u6027\uff1a<\/strong>\u5373\u4f7f\u5728\u7db2\u7d61\u4e0d\u7a69\u5b9a\u7684\u60c5\u6cc1\u4e0b\uff0c\u672c\u5730\u6578\u64da\u5eab\u4ecd\u7136\u53ef\u4ee5\u6b63\u5e38\u904b\u884c\uff0c\u78ba\u4fdd\u696d\u52d9\u9023\u7e8c\u6027\u3002<\/li>\n<li><strong>\u9748\u6d3b\u7684\u6578\u64da\u7ba1\u7406\uff1a<\/strong>\u7528\u6236\u53ef\u4ee5\u6839\u64da\u9700\u6c42\u81ea\u5b9a\u7fa9\u6578\u64da\u7684\u5b58\u5132\u548c\u7ba1\u7406\u7b56\u7565\uff0c\u5f9e\u800c\u63d0\u9ad8\u6578\u64da\u7684\u53ef\u7528\u6027\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%a6%82%e4%bd%95%e5%af%a6%e7%8f%be%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9c%ac%e5%9c%b0%e8%a8%82%e9%96%b1-ocWOnpFaAa\">\u5982\u4f55\u5be6\u73fe\u6578\u64da\u5eab\u672c\u5730\u8a02\u95b1<\/h2>\n<p>\u5be6\u73fe\u6578\u64da\u5eab\u672c\u5730\u8a02\u95b1\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u5e7e\u500b\u6b65\u9a5f\uff1a<\/p>\n<h3 id=\"1-%e8%a8%ad%e7%bd%ae%e6%95%b8%e6%93%9a%e5%ba%ab%e9%80%a3%e6%8e%a5-ocWOnpFaAa\">1. \u8a2d\u7f6e\u6578\u64da\u5eab\u9023\u63a5<\/h3>\n<pre><code>\n# \u9023\u63a5\u5230\u9060\u7a0b\u6578\u64da\u5eab\nimport psycopg2\n\nconn = psycopg2.connect(\n    dbname=\"remote_db\",\n    user=\"username\",\n    password=\"password\",\n    host=\"remote_host\",\n    port=\"5432\"\n)\n<\/code><\/pre>\n<h3 id=\"2-%e8%a8%ad%e7%bd%ae%e8%a8%82%e9%96%b1-ocWOnpFaAa\">2. \u8a2d\u7f6e\u8a02\u95b1<\/h3>\n<p>\u6839\u64da\u6240\u4f7f\u7528\u7684\u6578\u64da\u5eab\u7cfb\u7d71\uff0c\u8a2d\u7f6e\u8a02\u95b1\u7684\u65b9\u5f0f\u53ef\u80fd\u6703\u6709\u6240\u4e0d\u540c\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u4f7f\u7528 PostgreSQL \u7684\u793a\u4f8b\uff1a<\/p>\n<pre><code>\n# \u5275\u5efa\u4e00\u500b\u8a02\u95b1\ncur = conn.cursor()\ncur.execute(\"\"\"\n    CREATE SUBSCRIPTION my_subscription\n    CONNECTION 'host=remote_host dbname=remote_db user=username password=password'\n    PUBLICATION my_publication;\n\"\"\")\nconn.commit()\n<\/code><\/pre>\n<h3 id=\"3-%e6%9c%ac%e5%9c%b0%e6%95%b8%e6%93%9a%e5%ba%ab%e6%9b%b4%e6%96%b0-ocWOnpFaAa\">3. \u672c\u5730\u6578\u64da\u5eab\u66f4\u65b0<\/h3>\n<p>\u4e00\u65e6\u8a02\u95b1\u8a2d\u7f6e\u5b8c\u6210\uff0c\u6578\u64da\u5eab\u5c07\u81ea\u52d5\u63a5\u6536\u4f86\u81ea\u9060\u7a0b\u6578\u64da\u5eab\u7684\u66f4\u65b0\u3002\u7528\u6236\u53ef\u4ee5\u901a\u904e\u67e5\u8a62\u672c\u5730\u6578\u64da\u5eab\u4f86\u7372\u53d6\u6700\u65b0\u6578\u64da\u3002<\/p>\n<pre><code>\n# \u67e5\u8a62\u672c\u5730\u6578\u64da\ncur.execute(\"SELECT * FROM local_table;\")\nrows = cur.fetchall()\nfor row in rows:\n    print(row)\n<\/code><\/pre>\n<h2 id=\"%e7%b5%90%e8%ab%96-ocWOnpFaAa\">\u7d50\u8ad6<\/h2>\n<p>\u6578\u64da\u5eab\u8a02\u95b1\u662f\u4e00\u7a2e\u5f37\u5927\u7684\u6280\u8853\uff0c\u80fd\u5920\u5e6b\u52a9\u4f01\u696d\u5be6\u73fe\u5feb\u901f\u7684\u672c\u5730\u6578\u64da\u5b58\u5132\u548c\u7ba1\u7406\u3002\u901a\u904e\u5be6\u6642\u66f4\u65b0\u548c\u9748\u6d3b\u7684\u6578\u64da\u7ba1\u7406\u7b56\u7565\uff0c\u4f01\u696d\u53ef\u4ee5\u63d0\u9ad8\u5176\u61c9\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002\u5728\u9078\u64c7\u5408\u9069\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\u6642\uff0c\u8003\u616e\u6578\u64da\u5eab\u8a02\u95b1\u7684\u512a\u52e2\u5c07\u6709\u52a9\u65bc\u63d0\u5347\u696d\u52d9\u6548\u7387\u3002<\/p>\n<p>\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u9ad8\u6548\u7684\u6578\u64da\u5eab\u89e3\u6c7a\u65b9\u6848\uff0c\u8003\u616e\u4f7f\u7528<a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a>\u4f86\u652f\u6301\u60a8\u7684\u6578\u64da\u5eab\u9700\u6c42\u3002\u7121\u8ad6\u662f\u6578\u64da\u5eab\u672c\u5730\u8a02\u95b1\u9084\u662f\u5176\u4ed6\u6578\u64da\u7ba1\u7406\u7b56\u7565\uff0c\u9078\u64c7\u5408\u9069\u7684<a href=\"https:\/\/server.hk\">\u9999\u6e2f\u4f3a\u670d\u5668<\/a>\u5c07\u70ba\u60a8\u7684\u696d\u52d9\u63d0\u4f9b\u7a69\u5b9a\u7684\u57fa\u790e\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5feb\u901f\u672c\u5730\u5b58\u5132\u6578\u64da\u7684\u6578\u64da\u5eab\u8a02\u95b1\u670d\u52d9\uff0c\u5be6\u73fe\u9ad8\u6548\u6578\u64da\u7ba1\u7406\u8207\u5373\u6642\u66f4\u65b0\uff0c\u63d0\u5347\u696d\u52d9\u904b\u71df\u6548\u7387\u3002<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-186448","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186448","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=186448"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186448\/revisions"}],"predecessor-version":[{"id":186449,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/186448\/revisions\/186449"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=186448"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=186448"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=186448"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}