{"id":156259,"date":"2024-11-02T19:47:22","date_gmt":"2024-11-02T11:47:22","guid":{"rendered":"https:\/\/server.hk\/cnblog\/156259\/"},"modified":"2024-11-02T19:47:23","modified_gmt":"2024-11-02T11:47:23","slug":"%e5%88%86%e5%b8%83%e5%bc%8f-postgresql-%e9%9b%86%e7%be%a4%ef%bc%88citus%ef%bc%89%e5%ae%98%e6%96%b9%e7%a4%ba%e4%be%8b-%e5%a4%9a%e7%a7%9f%e6%88%b6%e6%87%89%e7%94%a8%e7%a8%8b%e5%ba%8f%e5%af%a6%e6%88%b0","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/156259\/","title":{"rendered":"\u5206\u5e03\u5f0f PostgreSQL \u96c6\u7fa4\uff08Citus\uff09\u5b98\u65b9\u793a\u4f8b &#8211; \u591a\u79df\u6236\u61c9\u7528\u7a0b\u5e8f\u5be6\u6230"},"content":{"rendered":"<h1 id=\"%e5%88%86%e5%b8%83%e5%bc%8f-postgresql-%e9%9b%86%e7%be%a4%ef%bc%88citus%ef%bc%89%e5%ae%98%e6%96%b9%e7%a4%ba%e4%be%8b-%e5%a4%9a%e7%a7%9f%e6%88%b6%e6%87%89%e7%94%a8%e7%a8%8b%e5%ba%8f%e5%af%a6%e6%88%b0-nUePeWAsSB\">\u5206\u5e03\u5f0f PostgreSQL \u96c6\u7fa4\uff08Citus\uff09\u5b98\u65b9\u793a\u4f8b &#8211; \u591a\u79df\u6236\u61c9\u7528\u7a0b\u5e8f\u5be6\u6230<\/h1>\n<p>\u96a8\u8457\u96f2\u8a08\u7b97\u548c\u5927\u6578\u64da\u6280\u8853\u7684\u8fc5\u901f\u767c\u5c55\uff0c\u8d8a\u4f86\u8d8a\u591a\u7684\u4f01\u696d\u9078\u64c7\u4f7f\u7528\u5206\u5e03\u5f0f\u6578\u64da\u5eab\u4f86\u6eff\u8db3\u5176\u65e5\u76ca\u589e\u9577\u7684\u6578\u64da\u9700\u6c42\u3002PostgreSQL \u4f5c\u70ba\u4e00\u500b\u5f37\u5927\u7684\u958b\u6e90\u95dc\u4fc2\u578b\u6578\u64da\u5eab\uff0c\u901a\u904e Citus \u64f4\u5c55\u5be6\u73fe\u4e86\u5206\u5e03\u5f0f\u67b6\u69cb\uff0c\u7279\u5225\u9069\u5408\u591a\u79df\u6236\u61c9\u7528\u7a0b\u5e8f\u7684\u958b\u767c\u3002\u672c\u6587\u5c07\u63a2\u8a0e\u5982\u4f55\u4f7f\u7528 Citus \u4f86\u69cb\u5efa\u4e00\u500b\u591a\u79df\u6236\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u4e26\u63d0\u4f9b\u5b98\u65b9\u793a\u4f8b\u4ee5\u5e6b\u52a9\u958b\u767c\u8005\u66f4\u597d\u5730\u7406\u89e3\u9019\u4e00\u6280\u8853\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-citus%ef%bc%9f-nUePeWAsSB\">\u4ec0\u9ebc\u662f Citus\uff1f<\/h2>\n<p>Citus \u662f\u4e00\u500b PostgreSQL \u64f4\u5c55\uff0c\u65e8\u5728\u5c07 PostgreSQL \u8f49\u8b8a\u70ba\u4e00\u500b\u5206\u5e03\u5f0f\u6578\u64da\u5eab\u3002\u5b83\u901a\u904e\u5c07\u6578\u64da\u5206\u7247\uff08sharding\uff09\u548c\u5206\u5e03\u5f0f\u67e5\u8a62\u8655\u7406\u7684\u65b9\u5f0f\uff0c\u4f86\u652f\u6301\u5927\u898f\u6a21\u7684\u6578\u64da\u5b58\u5132\u548c\u9ad8\u6548\u7684\u67e5\u8a62\u6027\u80fd\u3002Citus \u7279\u5225\u9069\u5408\u9700\u8981\u9ad8\u53ef\u64f4\u5c55\u6027\u548c\u9ad8\u53ef\u7528\u6027\u7684\u61c9\u7528\u7a0b\u5e8f\uff0c\u5c24\u5176\u662f\u591a\u79df\u6236\u67b6\u69cb\u7684\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e5%a4%9a%e7%a7%9f%e6%88%b6%e6%9e%b6%e6%a7%8b%e7%9a%84%e6%a6%82%e5%bf%b5-nUePeWAsSB\">\u591a\u79df\u6236\u67b6\u69cb\u7684\u6982\u5ff5<\/h2>\n<p>\u591a\u79df\u6236\u67b6\u69cb\u662f\u4e00\u7a2e\u8edf\u4ef6\u67b6\u69cb\uff0c\u5176\u4e2d\u55ae\u4e00\u5be6\u4f8b\u7684\u61c9\u7528\u7a0b\u5e8f\u670d\u52d9\u591a\u500b\u5ba2\u6236\uff08\u79df\u6236\uff09\u3002\u6bcf\u500b\u79df\u6236\u7684\u6578\u64da\u662f\u9694\u96e2\u7684\uff0c\u4f46\u5171\u4eab\u76f8\u540c\u7684\u61c9\u7528\u7a0b\u5e8f\u4ee3\u78bc\u548c\u57fa\u790e\u8a2d\u65bd\u3002\u9019\u7a2e\u67b6\u69cb\u7684\u512a\u52e2\u5728\u65bc\u53ef\u4ee5\u964d\u4f4e\u904b\u71df\u6210\u672c\uff0c\u63d0\u9ad8\u8cc7\u6e90\u5229\u7528\u7387\u3002<\/p>\n<h2 id=\"%e4%bd%bf%e7%94%a8-citus-%e6%a7%8b%e5%bb%ba%e5%a4%9a%e7%a7%9f%e6%88%b6%e6%87%89%e7%94%a8%e7%a8%8b%e5%ba%8f-nUePeWAsSB\">\u4f7f\u7528 Citus \u69cb\u5efa\u591a\u79df\u6236\u61c9\u7528\u7a0b\u5e8f<\/h2>\n<p>\u5728\u4f7f\u7528 Citus \u69cb\u5efa\u591a\u79df\u6236\u61c9\u7528\u7a0b\u5e8f\u6642\uff0c\u9996\u5148\u9700\u8981\u8a2d\u8a08\u6578\u64da\u6a21\u578b\u3002\u4ee5\u4e0b\u662f\u4e00\u500b\u7c21\u55ae\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u4f7f\u7528 Citus \u4f86\u5be6\u73fe\u591a\u79df\u6236\u6578\u64da\u5b58\u5132\u3002<\/p>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-1-%e5%ae%89%e8%a3%9d-citus-nUePeWAsSB\">\u6b65\u9a5f 1: \u5b89\u88dd Citus<\/h3>\n<pre><code>CREATE EXTENSION IF NOT EXISTS citus;<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-2-%e5%89%b5%e5%bb%ba%e7%a7%9f%e6%88%b6%e8%a1%a8-nUePeWAsSB\">\u6b65\u9a5f 2: \u5275\u5efa\u79df\u6236\u8868<\/h3>\n<p>\u9996\u5148\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u500b\u79df\u6236\u8868\uff0c\u8a72\u8868\u5c07\u5b58\u5132\u6bcf\u500b\u79df\u6236\u7684\u57fa\u672c\u4fe1\u606f\u3002<\/p>\n<pre><code>CREATE TABLE tenants (\n    tenant_id SERIAL PRIMARY KEY,\n    tenant_name TEXT NOT NULL\n);<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-3-%e5%89%b5%e5%bb%ba%e5%a4%9a%e7%a7%9f%e6%88%b6%e6%95%b8%e6%93%9a%e8%a1%a8-nUePeWAsSB\">\u6b65\u9a5f 3: \u5275\u5efa\u591a\u79df\u6236\u6578\u64da\u8868<\/h3>\n<p>\u63a5\u4e0b\u4f86\uff0c\u6211\u5011\u9700\u8981\u5275\u5efa\u4e00\u500b\u6578\u64da\u8868\uff0c\u8a72\u8868\u5c07\u5b58\u5132\u6bcf\u500b\u79df\u6236\u7684\u6578\u64da\u3002\u9019\u88e1\u6211\u5011\u4f7f\u7528\u79df\u6236 ID \u4f5c\u70ba\u5206\u7247\u9375\u3002<\/p>\n<pre><code>CREATE TABLE tenant_data (\n    data_id SERIAL PRIMARY KEY,\n    tenant_id INT NOT NULL,\n    data_content TEXT,\n    FOREIGN KEY (tenant_id) REFERENCES tenants(tenant_id)\n);<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-4-%e5%88%86%e7%89%87%e6%95%b8%e6%93%9a%e8%a1%a8-nUePeWAsSB\">\u6b65\u9a5f 4: \u5206\u7247\u6578\u64da\u8868<\/h3>\n<p>\u4f7f\u7528 Citus \u7684\u5206\u7247\u529f\u80fd\u4f86\u5206\u6563\u6578\u64da\u3002<\/p>\n<pre><code>SELECT create_distributed_table('tenant_data', 'tenant_id');<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-5-%e6%8f%92%e5%85%a5%e6%95%b8%e6%93%9a-nUePeWAsSB\">\u6b65\u9a5f 5: \u63d2\u5165\u6578\u64da<\/h3>\n<p>\u73fe\u5728\uff0c\u6211\u5011\u53ef\u4ee5\u70ba\u4e0d\u540c\u7684\u79df\u6236\u63d2\u5165\u6578\u64da\u3002<\/p>\n<pre><code>INSERT INTO tenants (tenant_name) VALUES ('Tenant A');\nINSERT INTO tenant_data (tenant_id, data_content) VALUES (1, 'Data for Tenant A');<\/code><\/pre>\n<h3 id=\"%e6%ad%a5%e9%a9%9f-6-%e6%9f%a5%e8%a9%a2%e6%95%b8%e6%93%9a-nUePeWAsSB\">\u6b65\u9a5f 6: \u67e5\u8a62\u6578\u64da<\/h3>\n<p>\u6700\u5f8c\uff0c\u6211\u5011\u53ef\u4ee5\u67e5\u8a62\u7279\u5b9a\u79df\u6236\u7684\u6578\u64da\u3002<\/p>\n<pre><code>SELECT * FROM tenant_data WHERE tenant_id = 1;<\/code><\/pre>\n<h2 id=\"%e7%b8%bd%e7%b5%90-nUePeWAsSB\">\u7e3d\u7d50<\/h2>\n<p>\u901a\u904e\u4f7f\u7528 Citus\uff0c\u958b\u767c\u8005\u53ef\u4ee5\u8f15\u9b06\u5730\u69cb\u5efa\u9ad8\u6548\u7684\u591a\u79df\u6236\u61c9\u7528\u7a0b\u5e8f\uff0c\u4e26\u5145\u5206\u5229\u7528 PostgreSQL \u7684\u5f37\u5927\u529f\u80fd\u3002\u9019\u7a2e\u67b6\u69cb\u4e0d\u50c5\u80fd\u5920\u63d0\u9ad8\u6578\u64da\u8655\u7406\u7684\u6548\u7387\uff0c\u9084\u80fd\u5920\u964d\u4f4e\u904b\u71df\u6210\u672c\uff0c\u70ba\u4f01\u696d\u5e36\u4f86\u66f4\u5927\u7684\u9748\u6d3b\u6027\u548c\u53ef\u64f4\u5c55\u6027\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\u4f86\u90e8\u7f72\u60a8\u7684\u591a\u79df\u6236\u61c9\u7528\u7a0b\u5e8f\uff0cServer.HK \u63d0\u4f9b\u4e86\u591a\u7a2e\u9078\u64c7\uff0c\u5e6b\u52a9\u60a8\u8f15\u9b06\u4e0a\u624b\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u5206\u5e03\u5f0f PostgreSQL \u96c6\u7fa4\uff08Citus\uff09\u7684\u5b98\u65b9\u793a\u4f8b\uff0c\u5b78\u7fd2\u5982\u4f55\u69cb\u5efa\u591a\u79df\u6236\u61c9\u7528\u7a0b\u5e8f\u7684\u5be6\u6230\u6280\u5de7\u8207\u6700\u4f73\u5be6\u8e10\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-156259","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156259","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=156259"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156259\/revisions"}],"predecessor-version":[{"id":156260,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/156259\/revisions\/156260"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=156259"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=156259"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=156259"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}