{"id":10006613,"date":"2022-09-27T19:26:23","date_gmt":"2022-09-27T11:26:23","guid":{"rendered":"https:\/\/ityet.com\/?p=10006613"},"modified":"2022-09-27T19:26:23","modified_gmt":"2022-09-27T11:26:23","slug":"%e6%b5%85%e8%b0%88ddd%e4%b8%ad%e7%9a%84%e8%81%9a%e5%90%88","status":"publish","type":"post","link":"https:\/\/itmax.cn\/?p=10006613","title":{"rendered":"\u6d45\u8c08DDD\u4e2d\u7684\u805a\u5408"},"content":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0\u5728\u6211\u770b\u6765\u5e76\u4e0d\u662fMVC\u7684\u57fa\u7840\u4e0a\u589e\u52a0\u9886\u57df\u5c42\uff0c\u4f7f\u7528\u5145\u8840\u6a21\u578b\uff0c\u89e3\u8026\u57fa\u7840\u670d\u52a1\uff0c\u6211\u7684\u4ee3\u7801\u5c31\u7b26\u5408DDD\u4e86\u3002<br \/><img decoding=\"async\" referrerpolicy=\"no-referrer\" src=\"https:\/\/segmentfault.com\/img\/remote\/1460000042552828\" alt=\"\u56fe\u7247\" title=\"\u56fe\u7247\" loading=\"lazy\"><br \/>\u4f5c\u8005 | \u674e\u5b87\u98de(\u83dc\u5c0a)\u6765\u6e90 | 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\/>public class OrderItemEntity {<br \/>  \/\/id<br \/>  private Long id;<br \/>  \/\/\u5546\u54c1(\u503c\u5bf9\u8c61)<br \/>  private Product product;<br \/>  \/\/\u6570\u91cf(\u503c\u5bf9\u8c61)<br \/>  private Count count;<br \/>  \/\/ item\u603b\u4ef7(\u503c\u5bf9\u8c61)<br \/>  private ItemAmount itemAmt;<\/p>\n<p>public void modifyCount(Count count) {<\/p>\n<pre><code>this.count = count;\nthis.itemAmt = new ItemAmt(this.product.getPrice()*count.get());<\/code><\/pre>\n<p>}<\/p>\n<p>}<\/p>\n<p>\/\/\u8ba2\u5355\u805a\u5408\u6839<br \/>public class OrderAggregate {<br \/>  \/\/\u805a\u5408\u552f\u4e00\u6807\u8bc6<br \/>  private Long id;<br \/>  \/\/\u8ba2\u5355\u53f7(\u503c\u5bf9\u8c61)<br \/>  private OrderNo orderNo;<br \/>  \/\/\u603b\u4ef7 (\u503c\u5bf9\u8c61)<br \/>  private Amount amt;<br \/>  \/\/\u8ba2\u5355\u660e\u7ec6<br \/>  private List&lt;OrderItemEntity&gt; items;<\/p>\n<p>public void modifyItemCount(Product product,Count count) {<\/p>\n<pre><code>\/\/\u627e\u5230\u5546\u54c1\nthis.items.stream().filter(product::equals).findAny().get();\n\/\/\u4fee\u6539\u6570\u91cf \u8fd4\u56deItem\u603b\u4ef7\nitem.modifyCount(count);\nItemAmount itemAmt = item.getItemAmt();\n\/\/\u4fee\u6539\u8ba2\u5355\u603b\u4ef7\nthis.amt = new Amount(this.amt.get()+itemAmt.get());<\/code><\/pre>\n<p>}<\/p>\n<p>}<\/p>\n<p>\/\/\u8981\u8ba2\u5355\u660e\u7ec6\u4e2d \u540d\u79f0\u53eb\u7535\u8111\u7684\u5546\u54c1\u6570\u91cf\u4fee\u6539100<\/p>\n<p>Product product = new Product(&#8220;\u7535\u8111&#8221;);<br \/>Count count = new Count(100);<br \/>Amount amt = orderAggregate.modifyItemCount(product, count);\u7406\u8bba\u4e0e\u73b0\u5b9e\u7684\u77db\u76fe\u4ece\u4ee3\u7801\u4e0a\u53ef\u4ee5\u770b\u51fa\u8fd9\u4e00\u6bb51:n\u5173\u7cfb\u7684\u4ee3\u7801\u5b8c\u5168\u57fa\u4e8e\u5185\u5b58\uff0c\u975e\u5e38\u7684OOP\uff0c\u4e5f\u5c31\u662f\u8bf4\uff0c\u6211\u4eec\u5728\u83b7\u5f97orderAggregate\u65f6\uff0c\u5df2\u7ecf\u52a0\u8f7d\u6574\u4e2a\u805a\u5408(\u5305\u62ecList)\uff0c\u8fd9\u91cc\u5c31\u9690\u542b\u4e86\u4e00\u4e2a\u6761\u4ef6\u5185\u5b58\u65e0\u9650\u5927\u3002\u5047\u8bbeOrderItemEntity\u7684\u91cf\u7ea7\u662f\u5341\u4e07\u7ea7\uff0c\u767e\u4e07\u7ea7\uff0c\u660e\u663e\u8fd9\u6bb5\u4ee3\u7801\u662f\u4e0d\u80fd\u4e0a\u7ebf\u7684\uff0c\u7406\u8bba\u4e0e\u73b0\u5b9e\u51fa\u73b0\u4e86\u77db\u76fe\u3002\u54a8\u8be2\u4e86\u5f88\u591a\u5927\u4f6c+\u4e2a\u4eba\u7406\u89e3\uff08\u4ee5\u4e0b\u65b9\u6cd5\u4e3a\u6211\u81ea\u5df1\u547d\u540d\uff09\u6a21\u578b\u63d0\u5347\u6cd5\uff08\u65e0\u9650\u5957\u5a03\uff09\u5927\u4f6c\u5efa\u8bae:\u201c\u5982\u679c\u771f\u6709\u8fd9\u79cd\u573a\u666f\uff0c\u5c31\u9700\u8981\u8c03\u6574\u805a\u5408\uff0c\u6bd4\u5982:\u5c06OrderItem\u63d0\u5347\u4e3aOrder, Order\u63d0\u5347\u4e3aBatchOrder\u201d\u601d\u8def\uff1a\u521b\u5efaBatchOrderAggregate,BatchOrderAggregate\u6301\u6709OrderEntity\u3002\u521b\u5efaOrderAggregate\u6301\u6709\u90e8\u5206OrderItemEntity\uff0c\u901a\u8fc7\u5206\u6cbb\u7684\u65b9\u5f0f\u5316\u6574\u4e3a\u96f6\u3002\u601d\u8003\uff1a\u6574\u4f53\u4e0a\u7b26\u5408\u4e1a\u52a1\u6a21\u578b\uff0c\u800c\u4e14\u6ca1\u6709\u4e0a\u9650\uff0c\u5373\u5982\u679cBatchOrderAggregate\u4e0d\u80fd\u89e3\u51b3\u95ee\u9898\uff0c\u90a3\u5c31\u796d\u51faBatchBatchOrderAggregate\u3002BatchBatchOrderAggregate\u6301\u6709BatchOrderEntity\u3002BatchOrderAggregate\u6301\u6709OrderEntity\u3002OrderAggregate\u6301\u6709\u90e8\u5206OrderItemEntity\u3002\u6301\u6709\u4ed3\u50a8\u6cd5\uff08\u9690\u85cf\u4e86\u6570\u636e\u5e93\u67e5\u8be2\uff0c\u4f46\u662f\u76f4\u89c9\u4e0a\u6709\u70b9\u53cd\u6a21\u5f0f\uff09\u5927\u4f6c\u5efa\u8bae\uff1a\u201c\u805a\u5408\u4e2d\u6784\u5efa\u7d22\u5f15\uff0c\u9700\u8981\u65f6\u518d\u52a0\u8f7d\u7f6e\u6362\u201d\u601d\u8def\uff1a\u805a\u5408\u6839\u6301\u6709\u5b58\u50a8\u5f15\u7528\uff0c\u9700\u8981\u65f6\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\u3002\u53ef\u4ee5\u52a0\u5165\u4e00\u5c42\u63a5\u53e3\u9694\u79bb\u3002public class OrderAggregate {<br \/>  \/\/\u805a\u5408\u552f\u4e00\u6807\u8bc6<br \/>  private Long id;<br \/>  \/\/\u8ba2\u5355\u53f7(\u503c\u5bf9\u8c61)<br \/>  private OrderNo orderNo;<br \/>  \/\/\u603b\u4ef7 (\u503c\u5bf9\u8c61)<br \/>  private Amount amt;<br \/>  \/\/\u5173\u8054\u5bf9\u8c61\u63a5\u53e3\uff08\u63a5\u53e3\u5b9e\u73b0\u5728\u57fa\u7840\u670d\u52a1\u5c42\uff0c\u5728\u5b9e\u73b0\u4e2d\u64cd\u4f5c\u6570\u636e\u5e93\uff09<br \/>  private OrderItemRel orderItemRel;<\/p>\n<p>public void modifyItemCount(Product product,Count count) {<\/p>\n<pre><code>List&lt;OrderItemEntity&gt; items = orderItemRel.find(product);\n\/\/\u627e\u5230\u5546\u54c1\nOrderItemEntity item = items.stream().filter(product::equals).findAny().get();\n\/\/\u4fee\u6539\u6570\u91cf \u8fd4\u56deItem\u603b\u4ef7 \u8fd9\u91cc\u6709\u5206\u652f,item\u4fee\u6539\u662f\u5426\u5e94\u8be5\u5728modifyCount\u4e2d\u6301\u4e45\u5316\n\/\/1.modifyCount\u4e2d\u6301\u4e45\u5316item\u90a3\u4e48\u6570\u636e\u5e93\u4e8b\u52a1\u5c06\u88ab\u52a0\u8f7dAppcationService\u5c42\uff0c\u5bb9\u6613\u4ea7\u751f\u5927\u4e8b\u52a1\u95ee\u9898\u3002\n\/\/2.modifyCount\u4e2d\u4e0d\u6301\u4e45\u5316item \n\/\/2.1\u5199\u5165\u6d88\u606f\u603b\u7ebf\uff0c\u5f53OrderAggregate\u901a\u8fc7Reponsitory\u6301\u4e45\u5316\u65f6\u5237\u51fa\u6d88\u606f\u6301\u4e45\u5316\n\/\/2.2 OrderAggregate\u4e2d\u589e\u52a0List&lt;OrderItemEntity&gt; items,modifyCount\u5c06item\u52a0\u5165items\u3002\nitem.modifyCount(count);\nItemAmount itemAmt = item.getItemAmt();\n\/\/\u4fee\u6539\u8ba2\u5355\u603b\u4ef7\nthis.amt = new Amount(this.amt.get()+itemAmt.get());\nreturn this.amt;<\/code><\/pre>\n<p>}<br \/>}\u81ea\u6211\u50ac\u7720\u6cd5\u601d\u8003\uff1a\u201c\u6301\u6709\u4ed3\u50a8\u6cd5\u201d\u601d\u8def,\u5b9e\u73b0\u4e5f\u4e00\u81f4\uff0c\u89c9\u5f97\u53cd\u6a21\u5f0f\u7684\u539f\u56e0\u662f:\u805a\u5408\u4e2d\u542b\u6709\u6570\u636e\u5e93\u64cd\u4f5c\uff0c\u6709\u8026\u5408\u57fa\u7840\u670d\u52a1\u7684\u5acc\u7591\u3002\u4f46\u662f\u6362\u4e2a\u65b9\u5411\u53bb\u60f3\uff1a\u5185\u5b58\u4e5f\u662f\u5b58\u50a8\u4ecb\u8d28\uff0c\u6570\u636e\u5e93\u4e5f\u662f\u5b58\u50a8\u4ecb\u8d28\uff0c\u4e8c\u8005\u672c\u6765\u6ca1\u6709\u8d28\u7684\u533a\u522b\u3002\u4e8c\u8005\u76f8\u6bd4\u53ea\u662f\u5bf9\u4e8e\u5185\u5b58\u64cd\u4f5c,\u7f16\u7a0b\u8bed\u8a00\u76f4\u63a5\u63d0\u4f9b\u4e86API\uff0c\u800c\u6570\u636e\u5e93\u8bbf\u95ee\u9700\u8981\u4f9d\u8d56\u7b2c\u4e09\u65b9\u5e93\u8fdb\u884c\u989d\u5916\u7f16\u7801\uff0c\u5047\u4f7f\u80fd\u5c06\u6570\u636e\u5e93\u64cd\u4f5c\u5c01\u88c5\u81f3\u8ddf\u5185\u5b58\u64cd\u4f5c\u4e00\u6837\u81ea\u7136\uff0c\u90a3\u4e48\u4e0d\u662f\u4e0d\u53ef\u4ee5\u8ba9\u4eba\u63a5\u53d7\u3002Id\u5173\u8054\u6cd5\uff08\u611f\u89c9\u4e0a\u4e0d\u592a\u7b26\u5408\u6211\u7684\u9884\u671f\uff0c\u6709\u4ee3\u7801\u5b9e\u73b0\u8ddf\u4e1a\u52a1\u5efa\u6a21\u8131\u94a9\uff0c\u8026\u5408\u57fa\u7840\u670d\u52a1\u7684\u5acc\u7591\u3002\u5bb9\u6613\u9000\u5316\u4e3aMVC\uff0c\u6b64\u53e5\u5c5e\u4e8e\u672c\u4eba\u4e3b\u89c2\u81c6\u65ad\uff09\u5927\u4f6c\u5efa\u8bae\uff1a\u201c\u5bf9ddd\u7406\u89e3\uff0c\u4e0d\u80fd\u56fa\u5316\u3002\u805a\u5408\uff0c\u672c\u610f\u662f\u89e3\u51b3\u4e1a\u52a1\u64cd\u4f5c\u7684\u4e00\u81f4\u6027\u3002\u5927\u91cf\u6587\u7ae0\uff0c\u90fd\u8868\u8ff0\u4e3a\u4e00\u6b21\u6027\u52a0\u8f7d\uff0c\u5b9e\u64cd\u4e2d\u662f\u4e0d\u73b0\u5b9e\u7684\u3002\u89e3\u51b3 \u201c\u4e1a\u52a1\u64cd\u4f5c\u4e00\u81f4\u6027\u201d\uff0c\u8d70 \u201cid\u5173\u8054+\u5185\u805a\u5230\u4e00\u4e2a\u51fd\u6570+\u4e8b\u52a1\u63a7\u5236\u201d\uff0c\u5c31\u5f88\u597d\u3002\u201d\u201c\u6ca1\u6709\u5fc5\u8981\u5f3a\u884cddd\uff0c\u62c6\u5206\u5f00\u4e5f\u6ca1\u6709\u4ec0\u4e48\u95ee\u9898\uff0c\u901a\u8fc7id\u5173\u8054\u5c31\u53ef\u4ee5\u3002\u201d\u201c\u4e1a\u52a1\u5efa\u6a21\u65f6\u6309\u7167\u5728\u540c\u4e00\u805a\u5408\u53bb\u5efa\uff0c\u843d\u5730\u65f6\u8003\u8651\u73b0\u5b9e\uff0c\u62c6\u5206\u805a\u5408\uff0c\u901a\u8fc7id\u5173\u8054\u3002\u201d\u601d\u8003\uff1a\u8ddf\u201c\u6301\u6709\u4ed3\u50a8\u6cd5\u201d\u5f88\u50cf\uff0c\u533a\u522b\u53ef\u80fd\u662f\u5728\u4e8e\u4ee3\u7801\u5199\u5728\u54ea\u91cc\uff0c\u4f46\u662f\u8fd9\u79cd\u65b9\u6cd5\u603b\u611f\u89c9\u4e0d\u662fOOP\u3002\u805a\u5408\u62c6\u5206\u6cd5\uff08\u6211\u89c9\u5f97applicationService\u4e2d\u5e94\u8be5\u662f\u8de8\u9886\u57df\u7684\u6d41\u7a0b\u7f16\u6392\uff0cOrder\uff0cOrderItem\u6709\u76f8\u540c\u7684\u751f\u547d\u5468\u671f\u4e0d\u80fd\u7b97\u8de8\u9886\u57df\uff0c\u53ea\u80fd\u7b97\u5938\u805a\u5408\u3002\u81f3\u4e8edomainService\uff0c\u505a\u4e3a\u9886\u57df\u7684\u4e00\u90e8\u5206\uff0c\u7406\u8bba\u4e0a\u4e0d\u5e94\u8be5\u6d89\u53ca\u57fa\u7840\u670d\u52a1\uff0c\u53ea\u662f\u5b58\u653e\u4e1a\u52a1\u76f8\u5173\u4f46\u662f\u4e0d\u9002\u5408\u653e\u5728\u805a\u5408\u4e2d\uff0c\u4e5f\u975e\u8de8\u57df\u7684\u4ee3\u7801\uff09\u5927\u4f6c\u5efa\u8bae\uff1a\u201c\u5982\u679cOrderItem\u8d85\u8fc710\u4e07\uff0c20\u4e07\uff0c \u8fd9\u79cd\u60c5\u51b5\u4e00\u822c\u5927\u6982\u7387\u4e0d\u9700\u8981\u4e00\u6b21\u6027\u52a0\u8f7d\u51fa\u6765\u6240\u6709OrderItem\uff0c\u800c\u662f\u5206\u9875\u52a0\u8f7dOrderItem\uff0c \u8fd9\u548c\u805a\u5408\u7684\u7279\u70b9\u51b2\u7a81\uff0c\u5efa\u8bae\u8bbe\u8ba1\u6210\u4e24\u4e2a\u9886\u57df\u5bf9\u8c61\u5355\u72ec\u7ba1\u7406\u201d\u601d\u8def\uff1a\u5efa\u7acb OrderAggregate\u8ddf OrderItemAggregate\u4e24\u4e2a\u805a\u5408\uff0c\u901a\u8fc7\u9886\u57df\u4e8b\u4ef6 \u5b9e\u73b0\u6700\u7ec8\u4e00\u81f4\u3002\u7075\u6d3b\u573a\u666f\u6cd5(\u805a\u5408\u62c6\u5206\u6cd5Plus\uff09\uff08\u611f\u89c9\u8fd8\u662f\u53cd\u6a21\u578b\uff0c\u4ee3\u7801\u597d\u7406\u89e3\uff0c\u4e1a\u52a1\u4e13\u5bb6\u4e0d\u4e00\u5b9a\u8ba4\u53ef\uff0c\u4e0d\u50cf\u81ea\u7136\u8bed\u8a00\u90a3\u6837\u81ea\u7136\uff0c\u4e3a\u4e86\u6027\u80fd\u505a\u51fa\u59a5\u534f\uff09\u5982demo\u4e2d\u6211\u4eec\u8981\u4fee\u6539OrderItem\u7684\u6570\u91cf\uff0c\u8fd9\u6837\u4e00\u4e2a\u573a\u666f\uff0c\u573a\u666f\u4e3b\u4f53\u662fOrderItem\u800c\u4e0d\u662fOrder\uff0cOrder\u88ab\u4fee\u6539\u53ef\u4ee5\u8ba4\u4e3a\u662f\u526f\u4f5c\u7528\u3002\u660e\u786e\u573a\u666f\u7684\u60c5\u51b5\u4e0b(\u660e\u786e\u4e0a\u4e0b\u6587) \u53ef\u4ee5\u5efa\u6a21\u4e3aOrderItemAggregate\u548cOrderEntity \u5c061:n\u7684\u5173\u7cfb\u8f6c\u5316\u4e3a1:1\u3002\/\/\u8ba2\u5355\u660e\u7ec6\u805a\u5408<br \/>public class OrderItemAggregate {<br \/>  \/\/id<br \/>  private Long id;<br \/>  \/\/\u5546\u54c1(\u503c\u5bf9\u8c61)<br \/>  private Product product;<br \/>  \/\/\u6570\u91cf(\u503c\u5bf9\u8c61)<br \/>  private Count count;<br \/>  \/\/ item\u603b\u4ef7(\u503c\u5bf9\u8c61)<br \/>  private ItemAmount itemAmt;<br \/>  \/\/Order\u5b9e\u4f53<br \/>  private OrderEntity orderEntity;<\/p>\n<p>public void modifyCount(Count count) {<\/p>\n<pre><code>this.count = count;\nItemAmt itemAmt = new ItemAmt(this.product.getPrice()*this.count.get());\n\/\/order\u603b\u4ef7\nAmt amt = this.orderEntity.getAmt();\n\/\/\u603b\u4ef7-item\u603b\u4ef7+\u65b0item\u603b\u4ef7\namt = new Amt(amt.get() - this.ItemAmt.get() + itemAmt.get());\n\/\/\u53d8\u66f4\u8ba2\u5355\u603b\u4ef7\nthis.orderEntity.modifyAmt(amt);\nthis.itemAmt = itemAmt;<\/code><\/pre>\n<p>}<\/p>\n<p>}<\/p>\n<p>\/\/\u8ba2\u5355\u5b9e\u4f53<br \/>public class OrderEntity {<br \/>  \/\/\u805a\u5408\u552f\u4e00\u6807\u8bc6<br \/>  private Long id;<br \/>  \/\/\u8ba2\u5355\u53f7(\u503c\u5bf9\u8c61)<br \/>  private OrderNo orderNo;<br \/>  \/\/\u603b\u4ef7 (\u503c\u5bf9\u8c61)<br \/>  private Amount amt;<\/p>\n<p>public Amount modifyAmt(Amt amt) {<\/p>\n<pre><code>\/\/\u4fee\u6539\u8ba2\u5355\u603b\u4ef7\nthis.amt = amt;<\/code><\/pre>\n<p>}<\/p>\n<p>}<\/p>\n<p>\/\/\u8981\u8ba2\u5355\u660e\u7ec6\u4e2d \u540d\u79f0\u53eb\u7535\u8111\u7684\u5546\u54c1\u6570\u91cf\u4fee\u6539100<br \/>orderItemAggregate.modifyCount(count);\u5220\u9664\/\u6dfb\u52a0\u8ba2\u5355\u660e\u7ec6\u540c\u7406\u3002\u800c\uff0c\u8ba2\u5355\u652f\u4ed8(\u8ba2\u5355\u88ab\u652f\u4ed8)\u7684\u573a\u666f\uff0c\u4e1a\u52a1\u4e3b\u4f53\u662fOrder\uff08\u8fd9\u4e2a\u573a\u666f\u4e0bOrderItem\u751a\u81f3\u4e0d\u4f1a\u51fa\u73b0\u4fee\u6539\uff0c\u5f53\u7136\u4e5f\u5c31\u6ca1\u6709\u5fc5\u8981\u52a0\u8f7dOrderItem\uff09\u3002\u603b\u7ed3\u611f\u8c22\u5404\u4f4d\u5927\u4f6c\u63d0\u4f9b\u81ea\u5df1\u7684\u601d\u8def\u4e3a\u6211\u89e3\u60d1\u3002\u5bf9\u4e0e\u805a\u5408\u843d\u5730\uff0c\u56e0\u4e3a\u6700\u540e\u4e00\u79cd\u7075\u6d3b\u573a\u666f\u53d8\u5316\u805a\u5408\u7684\u601d\u8def\uff0c\u5b8c\u5168\u65e0\u5173\u4e8e\u57fa\u7840\u670d\u52a1\uff0c\u4fdd\u6301\u4e86\u805a\u5408\u5185\u7684\u4e00\u81f4\u6027\uff0c\u7b26\u5408DDD\u9886\u57df\u53ea\u5173\u6ce8\u4e1a\u52a1\u7684\u601d\u60f3\uff0c\u800c\u4e14\u52c9\u5f3a\u7b26\u5408OOP\uff0c\u4e14\u843d\u5730\u6210\u672c\u4f4e\uff0c\u4ece\u5fc3\u91cc\u4e0a\u6211\u66f4\u503e\u5411\u4e8e\u6700\u540e\u4e00\u79cd\u65b9\u5f0f\u3002\u552f\u4e00\u7684\u96be\u70b9\u5728\u4e8e\u8bf4\u670d\u81ea\u5df1\u4ed6\u662f\u4e00\u4e2a\u6b63\u5e38\u7684\u4e1a\u52a1\u6a21\u578b\u3002\u63a8\u8350\u9605\u8bfb1.\u5982\u4f55\u5199\u51fa\u4e00\u7bc7\u597d\u7684\u6280\u672f\u65b9\u6848\uff1f2.\u963f\u91cc10\u5e74\u6c89\u6dc0\uff5c\u90a3\u4e9b\u6280\u672f\u5b9e\u6218\u4e2d\u7684\u67b6\u6784\u8bbe\u8ba1\u65b9\u6cd53.\u5982\u4f55\u505a\u597d\u201c\u9632\u5fa1\u6027\u7f16\u7801\u201d\uff1f\u00a0\u963f\u91cc\u4e91\u4ea7\u54c1\u6d4b\u8bc4\u2014\u5f00\u6e90PolarDB-PG\u00a0\u4f53\u9a8c\u963f\u91cc\u4e91\u81ea\u4e3b\u7814\u53d1\u7684\u4e91\u539f\u751f\u5173\u7cfb\u578b\u6570\u636e\u5e93\u4ea7\u54c1\uff0c100% \u517c\u5bb9 PostgreSQL\uff0c\u9ad8\u5ea6\u517c\u5bb9Oracle\u8bed\u6cd5\uff1b\u91c7\u7528\u57fa\u4e8e Shared-Storage \u7684\u5b58\u50a8\u8ba1\u7b97\u5206\u79bb\u67b6\u6784\uff0c\u5177\u6709\u6781\u81f4\u5f39\u6027\u3001\u6beb\u79d2\u7ea7\u5ef6\u8fdf\u3001HTAP \u7684\u80fd\u529b\u548c\u9ad8\u53ef\u9760\u3001\u9ad8\u53ef\u7528\u3001\u5f39\u6027\u6269\u5c55\u7b49\u4f01\u4e1a\u7ea7\u6570\u636e\u5e93\u7279\u6027\u3002\u53d1\u5e03\u8bc4\u6d4b\uff0c\u5199\u4e0b\u4f60\u7684\u611f\u53d7\u4e0e\u8bc4\u4ef7\u5373\u53ef\u83b7\u5f97\u591a\u91cd\u798f\u5229\u3002\u70b9\u51fb\u8fd9\u91cc\uff0c\u67e5\u770b\u8be6\u60c5\u3002\u539f\u6587\u94fe\u63a5\uff1a<a href=\"https:\/\/link.segmentfault.com\/?enc=oM2YEVDn9H%2FINtOZe0lUEQ%3D%3D.lA9Kxme%2BBjXVFnRCEDsrJMFHKsd%2BPRRBnJiezHdLJZ%2FjRCpK1d23BGI7IAo6DOaF\" rel=\"nofollow\">https:\/\/click.aliyun.com\/m\/10&#8230;<\/a>\u672c\u6587\u4e3a\u963f\u91cc\u4e91\u539f\u521b\u5185\u5bb9\uff0c\u672a\u7ecf\u5141\u8bb8\u4e0d\u5f97\u8f6c\u8f7d\u3002<\/p>\n<p><a href=\"https:\/\/segmentfault.com\/a\/1190000042552826\">https:\/\/segmentfault.com\/a\/1190000042552826<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b80\u4ecb\uff1a\u00a0\u5728\u6211\u770b\u6765\u5e76\u4e0d\u662fMVC\u7684\u57fa\u7840\u4e0a\u589e\u52a0\u9886\u57df\u5c42\uff0c\u4f7f\u7528\u5145\u8840\u6a21\u578b\uff0c\u89e3\u8026\u57fa\u7840\u670d\u52a1\uff0c\u6211\u7684\u4ee3\u7801\u5c31\u7b26\u5408DDD\u4e86\u3002\u4f5c\u8005 |  [&hellip;]<\/p>\n","protected":false},"author":0,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[],"tags":[],"class_list":["post-10006613","post","type-post","status-publish","format-standard","hentry"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006613","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=10006613"}],"version-history":[{"count":0,"href":"https:\/\/itmax.cn\/index.php?rest_route=\/wp\/v2\/posts\/10006613\/revisions"}],"wp:attachment":[{"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=10006613"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=10006613"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itmax.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=10006613"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}