{"id":205516,"date":"2025-06-12T10:57:36","date_gmt":"2025-06-12T02:57:36","guid":{"rendered":"https:\/\/server.hk\/cnblog\/205516\/"},"modified":"2025-06-12T10:57:36","modified_gmt":"2025-06-12T02:57:36","slug":"%e5%9c%a8%e5%88%86%e5%b8%83%e5%bc%8f%e7%b3%bb%e7%bb%9f%e4%b8%ad%e4%bd%bf%e7%94%a8golang%e6%a1%86%e6%9e%b6%e7%9a%84%e6%b3%a8%e6%84%8f%e4%ba%8b%e9%a1%b9","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/205516\/","title":{"rendered":"\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528golang\u6846\u67b6\u7684\u6ce8\u610f\u4e8b\u9879"},"content":{"rendered":"

\u6765\u5230GOLANG\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60GOLANG\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300a\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528golang\u6846\u67b6\u7684\u6ce8\u610f\u4e8b\u9879\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01,\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528 GOLANG \u6846\u67b6\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u4e8b\u9879\uff1a\u5e76\u53d1\u6027\uff1a\u4f7f\u7528 goroutine \u548c\u901a\u9053\u8fdb\u884c\u5e76\u53d1\u5904\u7406\uff0c\u4f46\u8981\u5c0f\u5fc3\u6570\u636e\u7ade\u4e89\u548c\u6b7b\u9501\u3002\u4e00\u81f4\u6027\uff1a\u6839\u636e CAP \u5b9a\u7406\u6743\u8861\u4e00\u81f4\u6027\u3001\u53ef\u7528\u6027\u548c\u5206\u533a\u5bb9\u5fcd\u6027\uff0c\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u3001\u4e8b\u52a1\u548c\u5206\u7247\u5b9e\u73b0\u4e0d\u540c\u4e00\u81f4\u6027\u7ea7\u522b\u3002\u53ef\u6269\u5c55\u6027\uff1a\u5229\u7528\u6c34\u5e73\u6269\u5c55\u3001\u4e91\u670d\u52a1\u548c\u5bb9\u5668\u5316\u6280\u672f\uff0c\u4ee5\u4fbf\u968f\u7740\u9700\u6c42\u589e\u957f\u800c\u6269\u5c55\u3002\u5f39\u6027\uff1a\u901a\u8fc7\u6545\u969c\u8f6c\u79fb\u3001\u91cd\u8bd5\u548c\u76d1\u63a7\u8b66\u62a5\uff0c\u5e94\u5bf9\u6545\u969c\u548c\u4e2d\u65ad\u3002,
\n,
\n\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528 GOLANG \u6846\u67b6\u7684\u6ce8\u610f\u4e8b\u9879<\/strong>,GOLANG \u6846\u67b6\u867d\u7136\u63d0\u4f9b\u4e86\u8bb8\u591a\u597d\u5904\uff0c\u4f46\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528\u65f6\u4e5f\u9700\u8981\u8003\u8651\u4e00\u4e9b\u6ce8\u610f\u4e8b\u9879\u3002\u4e86\u89e3\u8fd9\u4e9b\u6ce8\u610f\u4e8b\u9879\u5bf9\u4e8e\u6784\u5efa\u53ef\u9760\u4e14\u53ef\u6269\u5c55\u7684\u7cfb\u7edf\u81f3\u5173\u91cd\u8981\u3002,
\n1. \u5e76\u53d1\u6027<\/strong>,\u5206\u5e03\u5f0f\u7cfb\u7edf\u672c\u8d28\u4e0a\u662f\u5e76\u53d1\u7684\uff0c\u591a\u4e2a\u8fdb\u7a0b\u53ef\u80fd\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u3002GOLANG \u63d0\u4f9b\u4e86\u5e76\u53d1\u539f\u8bed\uff0c\u5982 goroutine \u548c\u901a\u9053\uff0c\u5141\u8bb8\u5f00\u53d1\u4eba\u5458\u5e76\u884c\u6267\u884c\u4efb\u52a1\u3002\u7136\u800c\uff0c\u5e76\u53d1\u6027\u4e5f\u5e26\u6765\u4e86\u6570\u636e\u7ade\u4e89\u548c\u6b7b\u9501\u7684\u98ce\u9669\uff0c\u56e0\u6b64\u5fc5\u987b\u5c0f\u5fc3\u5904\u7406\u3002,
\n2. \u4e00\u81f4\u6027<\/strong>,\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u786e\u4fdd\u6570\u636e\u7684\u6700\u7ec8\u4e00\u81f4\u6027\u81f3\u5173\u91cd\u8981\u3002\u5728\u4f7f\u7528 CAP \u5b9a\u7406\u65f6\uff0c\u5fc5\u987b\u4ed4\u7ec6\u8003\u8651\u4e00\u81f4\u6027\u3001\u53ef\u7528\u6027\u548c\u5206\u533a\u5bb9\u5fcd\u6027\u4e4b\u95f4\u7684\u6743\u8861\u3002GOLANG \u63d0\u4f9b\u4e86\u5206\u5e03\u5f0f\u9501\u3001\u4e8b\u52a1\u548c\u5206\u7247\u7b49\u673a\u5236\uff0c\u53ef\u7528\u4e8e\u5b9e\u73b0\u4e0d\u540c\u7684\u4e00\u81f4\u6027\u7ea7\u522b\u3002,
\n\u5b9e\u8df5\u6848\u4f8b\uff1a<\/strong>,\u8ba9\u6211\u4eec\u8003\u8651\u4e00\u4e2a\u7535\u5b50\u5546\u52a1\u5e94\u7528\u7a0b\u5e8f\u7684\u793a\u4f8b\uff0c\u5176\u4e2d\u591a\u4e2a\u670d\u52a1\u5668\u5904\u7406\u6765\u81ea\u4e0d\u540c\u7528\u6237\u7684\u8ba2\u5355\u3002\u4e3a\u4e86\u786e\u4fdd\u6570\u636e\u7684\u6700\u7ec8\u4e00\u81f4\u6027\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u6765\u9632\u6b62\u540c\u65f6\u5904\u7406\u540c\u4e00\u8ba2\u5355\u3002,
\n3. \u53ef\u6269\u5c55\u6027<\/strong>,\u5206\u5e03\u5f0f\u7cfb\u7edf\u65e8\u5728\u968f\u7740\u9700\u6c42\u7684\u589e\u957f\u800c\u6269\u5c55\u3002GOLANG \u6846\u67b6\u5e94\u8be5\u80fd\u591f\u6c34\u5e73\u6269\u5c55\uff0c\u4ee5\u5904\u7406\u66f4\u9ad8\u7684\u8d1f\u8f7d\u3002\u5e94\u8003\u8651\u4f7f\u7528\u4e91\u670d\u52a1\uff0c\u5982 Kubernetes \u6216 Docker\uff0c\u4ee5\u4fbf\u8f7b\u677e\u90e8\u7f72\u548c\u7ba1\u7406\u5e94\u7528\u7a0b\u5e8f\u3002,
\n\u5b9e\u8df5\u6848\u4f8b\uff1a<\/strong>,\u7ee7\u7eed\u4e4b\u524d\u7684\u6848\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Kubernetes \u90e8\u7f72\u5e94\u7528\u7a0b\u5e8f\uff0c\u5e76\u6839\u636e\u8d1f\u8f7d\u81ea\u52a8\u6269\u5c55 pod\u3002,
\n4. \u5f39\u6027<\/strong>,\u5206\u5e03\u5f0f\u7cfb\u7edf\u9700\u8981\u80fd\u591f\u5e94\u5bf9\u6545\u969c\u548c\u4e2d\u65ad\u3002GOLANG \u6846\u67b6\u5e94\u8be5\u63d0\u4f9b\u6062\u590d\u673a\u5236\uff0c\u4f8b\u5982\u6545\u969c\u8f6c\u79fb\u548c\u91cd\u590d\u5c1d\u8bd5\u3002\u8fd8\u5e94\u8003\u8651\u4f7f\u7528\u76d1\u63a7\u548c\u8b66\u62a5\u7cfb\u7edf\u6765\u5feb\u901f\u68c0\u6d4b\u548c\u54cd\u5e94\u95ee\u9898\u3002,
\n\u5b9e\u8df5\u6848\u4f8b\uff1a<\/strong>,\u5728 order-processor \u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u91cd\u8bd5\u673a\u5236\u6765\u5904\u7406\u4e34\u65f6\u6545\u969c\u3002\u6211\u4eec\u8fd8\u53ef\u4ee5\u8bbe\u7f6e\u76d1\u63a7\u8b66\u62a5\uff0c\u5728\u9519\u8bef\u7387\u8d85\u8fc7\u9608\u503c\u65f6\u901a\u77e5\u6211\u4eec\u3002,
\n\u9075\u5faa\u8fd9\u4e9b\u6ce8\u610f\u4e8b\u9879\u53ef\u4ee5\u5e2e\u52a9\u60a8\u6784\u5efa\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u53ef\u9760\u4e14\u53ef\u6269\u5c55\u7684 GOLANG \u5e94\u7528\u7a0b\u5e8f\u3002\u901a\u8fc7\u4ed4\u7ec6\u89c4\u5212\u548c\u5b9e\u65bd\uff0c\u60a8\u53ef\u4ee5\u786e\u4fdd\u60a8\u7684\u7cfb\u7edf\u80fd\u591f\u5e94\u5bf9\u5e76\u53d1\u6027\u3001\u4e00\u81f4\u6027\u3001\u53ef\u6269\u5c55\u6027\u548c\u5f39\u6027\u7b49\u6311\u6218\u3002<\/strong>,\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528golang\u6846\u67b6\u7684\u6ce8\u610f\u4e8b\u9879\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591aGOLANG\u77e5\u8bc6\uff01,\u6765\u5230GOLANG\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60GOLANG\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300a\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528golang\u6846\u67b6\u7684\u6ce8\u610f\u4e8b\u9879\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01,
\n<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> \u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528golang\u6846\u67b6\u7684\u6ce8\u610f\u4e8b\u9879<\/span><\/p>\n

\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528golang\u6846\u67b6\u7684\u6ce8\u610f\u4e8b\u9879<\/h1>\n

2024-10-26 12:38:59<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u6765\u5230GOLANG\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f\u7f16\u7a0b\u5b66\u4e60\u7231\u597d\u8005\uff0c\u5e0c\u671b\u5728\u8fd9\u91cc\u5b66\u4e60GOLANG\u76f8\u5173\u7f16\u7a0b\u77e5\u8bc6\u3002\u4e0b\u9762\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u5e26\u5927\u5bb6\u804a\u804a\u300a\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528golang\u6846\u67b6\u7684\u6ce8\u610f\u4e8b\u9879\u300b\uff0c\u4ecb\u7ecd\u4e00\u4e0b\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u52a9\u529b\u5b9e\u6218\u5f00\u53d1\uff01<\/p>\n

\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528 GOLANG \u6846\u67b6\u65f6\uff0c\u9700\u8981\u6ce8\u610f\u4ee5\u4e0b\u4e8b\u9879\uff1a\u5e76\u53d1\u6027\uff1a\u4f7f\u7528 goroutine \u548c\u901a\u9053\u8fdb\u884c\u5e76\u53d1\u5904\u7406\uff0c\u4f46\u8981\u5c0f\u5fc3\u6570\u636e\u7ade\u4e89\u548c\u6b7b\u9501\u3002\u4e00\u81f4\u6027\uff1a\u6839\u636e CAP \u5b9a\u7406\u6743\u8861\u4e00\u81f4\u6027\u3001\u53ef\u7528\u6027\u548c\u5206\u533a\u5bb9\u5fcd\u6027\uff0c\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u3001\u4e8b\u52a1\u548c\u5206\u7247\u5b9e\u73b0\u4e0d\u540c\u4e00\u81f4\u6027\u7ea7\u522b\u3002\u53ef\u6269\u5c55\u6027\uff1a\u5229\u7528\u6c34\u5e73\u6269\u5c55\u3001\u4e91\u670d\u52a1\u548c\u5bb9\u5668\u5316\u6280\u672f\uff0c\u4ee5\u4fbf\u968f\u7740\u9700\u6c42\u589e\u957f\u800c\u6269\u5c55\u3002\u5f39\u6027\uff1a\u901a\u8fc7\u6545\u969c\u8f6c\u79fb\u3001\u91cd\u8bd5\u548c\u76d1\u63a7\u8b66\u62a5\uff0c\u5e94\u5bf9\u6545\u969c\u548c\u4e2d\u65ad\u3002<\/p>\n

<\/p>\n

\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528 GOLANG \u6846\u67b6\u7684\u6ce8\u610f\u4e8b\u9879<\/strong><\/p>\n

GOLANG \u6846\u67b6\u867d\u7136\u63d0\u4f9b\u4e86\u8bb8\u591a\u597d\u5904\uff0c\u4f46\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528\u65f6\u4e5f\u9700\u8981\u8003\u8651\u4e00\u4e9b\u6ce8\u610f\u4e8b\u9879\u3002\u4e86\u89e3\u8fd9\u4e9b\u6ce8\u610f\u4e8b\u9879\u5bf9\u4e8e\u6784\u5efa\u53ef\u9760\u4e14\u53ef\u6269\u5c55\u7684\u7cfb\u7edf\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

1. \u5e76\u53d1\u6027<\/strong><\/p>\n

\u5206\u5e03\u5f0f\u7cfb\u7edf\u672c\u8d28\u4e0a\u662f\u5e76\u53d1\u7684\uff0c\u591a\u4e2a\u8fdb\u7a0b\u53ef\u80fd\u540c\u65f6\u8bbf\u95ee\u5171\u4eab\u8d44\u6e90\u3002GOLANG \u63d0\u4f9b\u4e86\u5e76\u53d1\u539f\u8bed\uff0c\u5982 goroutine \u548c\u901a\u9053\uff0c\u5141\u8bb8\u5f00\u53d1\u4eba\u5458\u5e76\u884c\u6267\u884c\u4efb\u52a1\u3002\u7136\u800c\uff0c\u5e76\u53d1\u6027\u4e5f\u5e26\u6765\u4e86\u6570\u636e\u7ade\u4e89\u548c\u6b7b\u9501\u7684\u98ce\u9669\uff0c\u56e0\u6b64\u5fc5\u987b\u5c0f\u5fc3\u5904\u7406\u3002<\/p>\n

2. \u4e00\u81f4\u6027<\/strong><\/p>\n

\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u786e\u4fdd\u6570\u636e\u7684\u6700\u7ec8\u4e00\u81f4\u6027\u81f3\u5173\u91cd\u8981\u3002\u5728\u4f7f\u7528 CAP \u5b9a\u7406\u65f6\uff0c\u5fc5\u987b\u4ed4\u7ec6\u8003\u8651\u4e00\u81f4\u6027\u3001\u53ef\u7528\u6027\u548c\u5206\u533a\u5bb9\u5fcd\u6027\u4e4b\u95f4\u7684\u6743\u8861\u3002GOLANG \u63d0\u4f9b\u4e86\u5206\u5e03\u5f0f\u9501\u3001\u4e8b\u52a1\u548c\u5206\u7247\u7b49\u673a\u5236\uff0c\u53ef\u7528\u4e8e\u5b9e\u73b0\u4e0d\u540c\u7684\u4e00\u81f4\u6027\u7ea7\u522b\u3002<\/p>\n

\u5b9e\u8df5\u6848\u4f8b\uff1a<\/strong><\/p>\n

\u8ba9\u6211\u4eec\u8003\u8651\u4e00\u4e2a\u7535\u5b50\u5546\u52a1\u5e94\u7528\u7a0b\u5e8f\u7684\u793a\u4f8b\uff0c\u5176\u4e2d\u591a\u4e2a\u670d\u52a1\u5668\u5904\u7406\u6765\u81ea\u4e0d\u540c\u7528\u6237\u7684\u8ba2\u5355\u3002\u4e3a\u4e86\u786e\u4fdd\u6570\u636e\u7684\u6700\u7ec8\u4e00\u81f4\u6027\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5206\u5e03\u5f0f\u9501\u6765\u9632\u6b62\u540c\u65f6\u5904\u7406\u540c\u4e00\u8ba2\u5355\u3002<\/p>\n

import (\n    \"context\"\n    \"sync\"\n\n    \"cloud.google.com\/go\/datastore\"\n)\n\ntype Order struct {\n    ID          int64\n    Product     string\n    OrderedAt   time.Time\n    OrderLocked bool\n}\n\nvar (\n    mu      sync.Mutex\n    orderIDs = map[int64]bool{}\n)\n\nfunc lockOrder(ctx context.Context, orderID int64) error {\n    mu.Lock()\n    defer mu.Unlock()\n    if _, ok := order IDs[order ID] ; ok {\n        return errors.New(\"order already locked\")\n    }\n    orderIDs[orderID] = true\n    return nil\n}\n\nfunc unlockOrder(ctx context.Context, orderID int64) {\n    mu.Lock()\n    defer mu.Unlock()\n    delete(orderIDs, orderID)\n}<\/pre>\n
3. \u53ef\u6269\u5c55\u6027<\/strong><\/p>\n
\u5206\u5e03\u5f0f\u7cfb\u7edf\u65e8\u5728\u968f\u7740\u9700\u6c42\u7684\u589e\u957f\u800c\u6269\u5c55\u3002GOLANG \u6846\u67b6\u5e94\u8be5\u80fd\u591f\u6c34\u5e73\u6269\u5c55\uff0c\u4ee5\u5904\u7406\u66f4\u9ad8\u7684\u8d1f\u8f7d\u3002\u5e94\u8003\u8651\u4f7f\u7528\u4e91\u670d\u52a1\uff0c\u5982 Kubernetes \u6216 Docker\uff0c\u4ee5\u4fbf\u8f7b\u677e\u90e8\u7f72\u548c\u7ba1\u7406\u5e94\u7528\u7a0b\u5e8f\u3002<\/p>\n
\u5b9e\u8df5\u6848\u4f8b\uff1a<\/strong><\/p>\n
\u7ee7\u7eed\u4e4b\u524d\u7684\u6848\u4f8b\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 Kubernetes \u90e8\u7f72\u5e94\u7528\u7a0b\u5e8f\uff0c\u5e76\u6839\u636e\u8d1f\u8f7d\u81ea\u52a8\u6269\u5c55 pod\u3002<\/p>\n
apiVersion: apps\/v1\nkind: Deployment\nmetadata:\n  name: order-processor\nspec:\n  replicas: 1\n  selector:\n    matchLabels:\n      app: order-processor\n  template:\n    metadata:\n      labels:\n        app: order-processor\n    spec:\n      containers:\n      - name: order-processor\n        image: gcr.io\/project\/order-processor\n        env:\n        - name: DATASTORE_PROJECT_ID\n          valueFrom:\n            configMapKeyRef:\n              name: datastore-config\n              key: projectId<\/pre>\n
4. \u5f39\u6027<\/strong><\/p>\n
\u5206\u5e03\u5f0f\u7cfb\u7edf\u9700\u8981\u80fd\u591f\u5e94\u5bf9\u6545\u969c\u548c\u4e2d\u65ad\u3002GOLANG \u6846\u67b6\u5e94\u8be5\u63d0\u4f9b\u6062\u590d\u673a\u5236\uff0c\u4f8b\u5982\u6545\u969c\u8f6c\u79fb\u548c\u91cd\u590d\u5c1d\u8bd5\u3002\u8fd8\u5e94\u8003\u8651\u4f7f\u7528\u76d1\u63a7\u548c\u8b66\u62a5\u7cfb\u7edf\u6765\u5feb\u901f\u68c0\u6d4b\u548c\u54cd\u5e94\u95ee\u9898\u3002<\/p>\n
\u5b9e\u8df5\u6848\u4f8b\uff1a<\/strong><\/p>\n
\u5728 order-processor \u5e94\u7528\u7a0b\u5e8f\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u91cd\u8bd5\u673a\u5236\u6765\u5904\u7406\u4e34\u65f6\u6545\u969c\u3002\u6211\u4eec\u8fd8\u53ef\u4ee5\u8bbe\u7f6e\u76d1\u63a7\u8b66\u62a5\uff0c\u5728\u9519\u8bef\u7387\u8d85\u8fc7\u9608\u503c\u65f6\u901a\u77e5\u6211\u4eec\u3002<\/p>\n
func processOrder(ctx context.Context, order Order) (bool, error) {\n    err := datastoreClient.RunInTransaction(ctx, func(tx *datastore.Transaction) error {\n        orderKey := datastore.IDKey(\"Order\", order.ID, nil)\n        existed := false\n        if err := tx.Get(orderKey, &order); err != nil {\n            if err != datastore.ErrNoSuchEntity {\n                return err\n            }\n            existed = true\n        }\n\n        if existed {\n            return ErrOrderAlreadyProcessed\n        }\n\n        if _, err = tx.Put(orderKey, &order); err != nil {\n            return err\n        }\n\n        return nil\n    })\n\n    if err != nil {\n        \/\/ \u91cd\u8bd5\u673a\u5236\n        time.Sleep(100 * time.Millisecond)\n        return processOrder(ctx, order)\n    }\n\n    return true, nil\n}<\/pre>\n
\u9075\u5faa\u8fd9\u4e9b\u6ce8\u610f\u4e8b\u9879\u53ef\u4ee5\u5e2e\u52a9\u60a8\u6784\u5efa\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u53ef\u9760\u4e14\u53ef\u6269\u5c55\u7684 GOLANG \u5e94\u7528\u7a0b\u5e8f\u3002\u901a\u8fc7\u4ed4\u7ec6\u89c4\u5212\u548c\u5b9e\u65bd\uff0c\u60a8\u53ef\u4ee5\u786e\u4fdd\u60a8\u7684\u7cfb\u7edf\u80fd\u591f\u5e94\u5bf9\u5e76\u53d1\u6027\u3001\u4e00\u81f4\u6027\u3001\u53ef\u6269\u5c55\u6027\u548c\u5f39\u6027\u7b49\u6311\u6218\u3002<\/strong><\/p>\n
\u597d\u4e86\uff0c\u672c\u6587\u5230\u6b64\u7ed3\u675f\uff0c\u5e26\u5927\u5bb6\u4e86\u89e3\u4e86\u300a\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u4f7f\u7528golang\u6846\u67b6\u7684\u6ce8\u610f\u4e8b\u9879\u300b\uff0c\u5e0c\u671b\u672c\u6587\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff01\u5173\u6ce8GOLANG\u516c\u4f17\u53f7\uff0c\u7ed9\u5927\u5bb6\u5206\u4eab\u66f4\u591aGOLANG\u77e5\u8bc6\uff01<\/p>\n
\n
\n <\/dt>\n
\n   Java\u51fd\u6570\u5f0f\u63a5\u53e3\u4e0e\u53cd\u5e94\u5f0f\u7f16\u7a0b\u7684\u534f\u4f5c\n <\/dd>\n<\/dl>\n
\n
\n <\/dt>\n
\n   php\u51fd\u6570\u4ee3\u7801\u5ba1\u67e5\u65b9\u6cd5\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"
\u6765\u5230GOLANG\u7684\u5927\u5bb6\uff0c\u76f8\u4fe1\u90fd\u662f...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-205516","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205516","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=205516"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/205516\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=205516"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=205516"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=205516"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}