{"id":1000,"date":"2026-04-11T08:42:34","date_gmt":"2026-04-11T08:42:34","guid":{"rendered":"https:\/\/www.visualize-ai.com\/tw\/avoiding-deadlocks-communication-diagram-backend-resilience\/"},"modified":"2026-04-11T08:42:34","modified_gmt":"2026-04-11T08:42:34","slug":"avoiding-deadlocks-communication-diagram-backend-resilience","status":"publish","type":"post","link":"https:\/\/www.visualize-ai.com\/tw\/avoiding-deadlocks-communication-diagram-backend-resilience\/","title":{"rendered":"\u907f\u514d\u6b7b\u9396\uff1a\u4ee5\u901a\u8a0a\u5716\u70ba\u57fa\u790e\u7684\u5f8c\u7aef\u97cc\u6027\u65b9\u6cd5"},"content":{"rendered":"<p>\u5728\u73fe\u4ee3\u5206\u6563\u5f0f\u7cfb\u7d71\u4e2d\uff0c\u5f8c\u7aef\u670d\u52d9\u7684\u53ef\u9760\u6027\u901a\u5e38\u53d6\u6c7a\u65bc\u5176\u8655\u7406\u4f75\u767c\u8acb\u6c42\u8207\u5171\u4eab\u8cc7\u6e90\u7684\u80fd\u529b\u3002\u6b64\u9818\u57df\u4e2d\u6700\u5e38\u898b\u4e14\u96e3\u4ee5\u91cd\u73fe\u7684\u554f\u984c\u4e4b\u4e00\u4fbf\u662f\u6b7b\u9396\u3002\u7576\u5169\u500b\u6216\u66f4\u591a\u9032\u7a0b\u56e0\u5f7c\u6b64\u7b49\u5f85\u5c0d\u65b9\u91cb\u653e\u8cc7\u6e90\u800c\u7121\u6cd5\u7e7c\u7e8c\u57f7\u884c\u6642\uff0c\u5c31\u6703\u767c\u751f\u6b7b\u9396\u3002\u9019\u7a2e\u6c38\u4e45\u963b\u585e\u7684\u72c0\u614b\u53ef\u80fd\u5c0e\u81f4\u6574\u500b\u7cfb\u7d71\u505c\u64fa\uff0c\u9020\u6210\u8cc7\u6599\u4e0d\u4e00\u81f4\u3001\u670d\u52d9\u7121\u6cd5\u4f7f\u7528\u4ee5\u53ca\u4f7f\u7528\u8005\u7684\u632b\u6557\u611f\u3002\u70ba\u964d\u4f4e\u9019\u4e9b\u98a8\u96aa\uff0c\u67b6\u69cb\u5e2b\u8207\u5de5\u7a0b\u5e2b\u5fc5\u9808\u8d85\u8d8a\u7c21\u55ae\u7684\u7a0b\u5f0f\u78bc\u5be9\u67e5\uff0c\u63a1\u7528\u8996\u89ba\u5316\u7684\u65b9\u5f0f\u9032\u884c\u7cfb\u7d71\u8a2d\u8a08\u3002\u901a\u8a0a\u5716\u63d0\u4f9b\u4e86\u4e00\u7a2e\u7d50\u69cb\u5316\u7684\u65b9\u6cd5\uff0c\u7528\u4ee5\u7e6a\u88fd\u4e92\u52d5\u95dc\u4fc2\u3001\u8b58\u5225\u6f5b\u5728\u7684\u7af6\u722d\u9ede\uff0c\u4e26\u5728\u7a0b\u5f0f\u78bc\u64b0\u5beb\u4e4b\u524d\u5c31\u5f37\u5236\u57f7\u884c\u97cc\u6027\u6a21\u5f0f\u3002<\/p>\n<p>\u672c\u6307\u5357\u63a2\u8a0e\u5f8c\u7aef\u74b0\u5883\u4e2d\u6b7b\u9396\u7684\u904b\u4f5c\u6a5f\u5236\uff0c\u4e26\u793a\u7bc4\u901a\u8a0a\u5716\u5982\u4f55\u4f5c\u70ba\u9810\u9632\u5de5\u5177\u3002\u900f\u904e\u8996\u89ba\u5316\u63a7\u5236\u6d41\u7a0b\u8207\u8cc7\u6e90\u53d6\u5f97\u904e\u7a0b\uff0c\u5718\u968a\u80fd\u5920\u5bdf\u89ba\u5faa\u74b0\u4f9d\u8cf4\u95dc\u4fc2\uff0c\u4e26\u5be6\u65bd\u7b56\u7565\u4e88\u4ee5\u6253\u7834\u3002\u6211\u5011\u5c07\u6db5\u84cb\u7406\u8ad6\u57fa\u790e\u3001\u5be6\u7528\u7684\u8996\u89ba\u5316\u6280\u8853\uff0c\u4ee5\u53ca\u5c0d\u7cfb\u7d71\u97cc\u6027\u6709\u8ca2\u737b\u7684\u7279\u5b9a\u67b6\u69cb\u6a21\u5f0f\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Hand-drawn infographic illustrating how to avoid deadlocks in backend systems using communication diagrams, featuring the four Coffman conditions (mutual exclusion, hold and wait, no preemption, circular wait), a UML-style service interaction example showing circular dependency between Service Alpha and Beta, and four mitigation strategies: lock ordering, timeouts with retries, asynchronous processing, and optimistic locking, with key takeaways for building resilient distributed systems\" decoding=\"async\" src=\"https:\/\/www.visualize-ai.com\/wp-content\/uploads\/2026\/04\/avoiding-deadlocks-communication-diagram-backend-resilience-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>\u7406\u89e3\u6b7b\u9396\u7684\u904b\u4f5c\u6a5f\u5236 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P1\u3002<\/li>\n<\/ul>\n<p>\u5728\u55ae\u57f7\u884c\u7dd2\u61c9\u7528\u4e2d\uff0c\u6b7b\u9396\u6975\u70ba\u7f55\u898b\u3002\u7136\u800c\uff0c\u5728\u8655\u7406\u6578\u5343\u500b\u4f75\u767c\u8acb\u6c42\u7684\u5f8c\u7aef\u7cfb\u7d71\u4e2d\uff0c\u9019\u4e9b\u689d\u4ef6\u5f88\u5bb9\u6613\u88ab\u6eff\u8db3\u3002\u4f8b\u5982\uff0c\u82e5\u670d\u52d9 A \u6301\u6709\u8cc7\u6e90 X \u7684\u9396\u4e26\u7b49\u5f85\u8cc7\u6e90 Y\uff0c\u800c\u670d\u52d9 B \u6301\u6709\u8cc7\u6e90 Y \u4e26\u7b49\u5f85\u8cc7\u6e90 X\uff0c\u5c31\u6703\u5f62\u6210\u74b0\u72c0\u7b49\u5f85\u3002\u82e5\u7121\u5f37\u5236\u525d\u596a\u6a5f\u5236\u6216\u4ed4\u7d30\u7684\u6392\u5e8f\uff0c\u7cfb\u7d71\u5c07\u9677\u5165\u51cd\u7d50\u72c0\u614b\u3002<\/p>\n<h2>\u901a\u8a0a\u5716\u7684\u89d2\u8272 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A \u7b49\u5f85\u7a0b\u5e8f B\uff0c\u800c\u7a0b\u5e8f B \u53c8\u7b49\u5f85\u7a0b\u5e8f A\u3002<\/li>\n<\/ul>\n<h2>\u8b58\u5225\u5faa\u74b0\u7b49\u5f85\u6a21\u5f0f \ud83d\udd01<\/h2>\n<p>\u7cfb\u7d71\u8a2d\u8a08\u4e2d\u6700\u5371\u96aa\u7684\u6a21\u5f0f\u662f\u5faa\u74b0\u4f9d\u8cf4\u3002\u5728\u901a\u8a0a\u5716\u4e2d\uff0c\u9019\u6703\u5448\u73fe\u70ba\u4e92\u52d5\u7684\u9589\u5408\u8ff4\u8def\u3002\u8003\u616e\u4e00\u500b\u6d89\u53ca\u5169\u500b\u670d\u52d9\u7684\u60c5\u5883\uff1a\u670d\u52d9 Alpha \u548c\u670d\u52d9 Beta\u3002<\/p>\n<ol>\n<li>\u670d\u52d9 Alpha \u555f\u52d5\u4e00\u500b\u4ea4\u6613\u4e26\u9396\u5b9a\u8a18\u9304 1\u3002<\/li>\n<li>\u670d\u52d9 Alpha \u5411\u670d\u52d9 Beta \u8acb\u6c42\u9396\u5b9a\u8a18\u9304 2\u3002<\/li>\n<li>\u670d\u52d9 Beta \u5df2\u7d93\u6301\u6709\u8a18\u9304 2 \u7684\u9396\uff0c\u4f46\u9700\u8981\u66f4\u65b0\u7531 Alpha \u6301\u6709\u7684\u8a18\u9304 1\u3002<\/li>\n<\/ol>\n<p>\u5728\u8996\u89ba\u5316\u8868\u793a\u4e2d\uff0c\u9019\u500b\u8ff4\u8def\u7acb\u5373\u986f\u800c\u6613\u898b\u3002\u5716\u5f62\u986f\u793a Alpha \u6307\u5411 Beta\uff0c\u800c Beta \u53c8\u6307\u5411 Alpha\uff0c\u96d9\u65b9\u90fd\u8981\u6c42\u5c0d\u65b9\u6301\u6709\u7684\u8cc7\u6e90\u3002\u82e5\u7121\u5716\u5f62\uff0c\u9019\u7a2e\u908f\u8f2f\u53ef\u80fd\u50c5\u5728\u751f\u7522\u74b0\u5883\u4e2d\u65b7\u6216\u8907\u96dc\u58d3\u529b\u6e2c\u8a66\u6642\u624d\u6703\u88ab\u767c\u73fe\u3002<\/p>\n<h3>\u5c0e\u81f4\u5faa\u74b0\u6027\u7684\u5e38\u898b\u60c5\u5883<\/h3>\n<ul>\n<li><strong>\u4ea4\u6613\u50b3\u64ad\uff1a<\/strong>\u7576\u5206\u6563\u5f0f\u4ea4\u6613\u8981\u6c42\u591a\u500b\u670d\u52d9\u4ee5\u7279\u5b9a\u9806\u5e8f\u63d0\u4ea4\uff0c\u4f46\u8a72\u9806\u5e8f\u672a\u88ab\u5f37\u5236\u57f7\u884c\u6642\u3002<\/li>\n<li><strong>\u5de2\u72c0\u547c\u53eb\uff1a<\/strong>\u4e00\u500b\u51fd\u6578\u547c\u53eb\u53e6\u4e00\u500b\u51fd\u6578\uff0c\u800c\u8a72\u51fd\u6578\u6700\u7d42\u53c8\u547c\u53eb\u539f\u59cb\u51fd\u6578\uff0c\u5f9e\u800c\u5f62\u6210\u905e\u8ff4\u9396\u93c8\u3002<\/li>\n<li><strong>\u5171\u4eab\u5feb\u53d6\uff1a<\/strong>\u591a\u500b\u670d\u52d9\u540c\u6642\u5617\u8a66\u66f4\u65b0\u540c\u4e00\u500b\u5feb\u53d6\u9805\u76ee\uff0c\u537b\u7f3a\u4e4f\u5206\u6563\u5f0f\u9396\u6a5f\u5236\u3002<\/li>\n<li><strong>\u8cc7\u6599\u5eab\u5916\u9375\uff1a<\/strong>\u5c0d\u76f8\u95dc\u8cc7\u6599\u8868\u7684\u66f4\u65b0\uff0c\u9700\u8981\u540c\u6642\u9396\u5b9a\u5169\u500b\u8cc7\u6599\u8868\uff0c\u4f46\u5404\u670d\u52d9\u7684\u66f4\u65b0\u9806\u5e8f\u4e0d\u540c\u3002<\/li>\n<\/ul>\n<h2>\u7b56\u7565\u6027\u7de9\u89e3\u6280\u8853 \ud83d\udee0\ufe0f<\/h2>\n<p>\u4e00\u65e6\u901a\u8a0a\u5716\u986f\u793a\u51fa\u6f5b\u5728\u7684\u6b7b\u9396\uff0c\u5c31\u9700\u8981\u9032\u884c\u7279\u5b9a\u7684\u67b6\u69cb\u8b8a\u66f4\u3002\u4e26\u7121\u4e00\u7a2e\u842c\u80fd\u89e3\u6cd5\u9069\u7528\u65bc\u6240\u6709\u7cfb\u7d71\uff0c\u4f46\u5df2\u6709\u5e7e\u7a2e\u7d93\u904e\u9a57\u8b49\u7684\u7b56\u7565\u53ef\u7528\u4f86\u6253\u7834 Coffman \u689d\u4ef6\u3002<\/p>\n<h3>1. \u9396\u5b9a\u9806\u5e8f<\/h3>\n<p>\u9019\u662f\u9632\u6b62\u5faa\u74b0\u7b49\u5f85\u6700\u6709\u6548\u7684\u65b9\u6cd5\u3002\u7cfb\u7d71\u5fc5\u9808\u5f37\u5236\u57f7\u884c\u8cc7\u6e90\u7684\u5168\u57df\u6392\u5e8f\u3002\u5982\u679c\u6bcf\u500b\u7a0b\u5e8f\u90fd\u4ee5\u76f8\u540c\u9806\u5e8f\u8acb\u6c42\u8cc7\u6e90\uff08\u4f8b\u5982\uff0c\u5148\u8acb\u6c42\u8cc7\u6e90 A \u518d\u8acb\u6c42\u8cc7\u6e90 B\uff09\uff0c\u5247\u7121\u6cd5\u5f62\u6210\u5faa\u74b0\u3002\u5728\u901a\u8a0a\u5716\u4e2d\uff0c\u9019\u610f\u5473\u8457\u5fc5\u9808\u78ba\u4fdd\u6240\u6709\u8acb\u6c42\u8cc7\u6e90 X \u7684\u9023\u7d50\u90fd\u5efa\u7acb\u5b8c\u6210\u5f8c\uff0c\u624d\u5141\u8a31\u4efb\u4f55\u9023\u7d50\u8acb\u6c42\u8cc7\u6e90 Y\u3002<\/p>\n<h3>2. \u8d85\u6642\u8207\u91cd\u8a66<\/h3>\n<p>\u5373\u4f7f\u6709\u4e86\u9806\u5e8f\uff0c\u7af6\u722d\u4ecd\u6709\u53ef\u80fd\u767c\u751f\u3002\u5728\u8cc7\u6e90\u7372\u53d6\u4e0a\u5be6\u65bd\u8d85\u6642\u6a5f\u5236\uff0c\u53ef\u78ba\u4fdd\u9032\u7a0b\u4e0d\u6703\u7121\u9650\u671f\u7b49\u5f85\u3002\u5982\u679c\u5728\u6307\u5b9a\u6642\u9593\u5167\u7121\u6cd5\u53d6\u5f97\u9396\uff0c\u9032\u7a0b\u5c07\u91cb\u653e\u7576\u524d\u8cc7\u6e90\u4e26\u91cd\u8a66\u3002\u9019\u53ef\u9632\u6b62\u7cfb\u7d71\u6c38\u4e45\u51cd\u7d50\uff0c\u4f46\u53ef\u80fd\u6703\u5f15\u5165\u5ef6\u9072\u3002<\/p>\n<h3>3. \u7570\u6b65\u8655\u7406<\/h3>\n<p>\u5f9e\u540c\u6b65\u8acb\u6c42\u5207\u63db\u5230\u7570\u6b65\u4e8b\u4ef6\u9a45\u52d5\u67b6\u69cb\u53ef\u4ee5\u6e1b\u5c11\u7af6\u722d\u3002\u670d\u52d9\u4e0d\u518d\u7b49\u5f85\u9396\u91cb\u653e\uff0c\u800c\u662f\u767c\u4f48\u4e8b\u4ef6\u4e26\u7e7c\u7e8c\u8655\u7406\u3002\u7576\u8cc7\u6e90\u53ef\u7528\u6642\uff0c\u6d88\u8cbb\u8005\u8ca0\u8cac\u8655\u7406\u66f4\u65b0\u3002\u9019\u4f7f\u8cc7\u6e90\u4f7f\u7528\u7684\u6642\u6a5f\u5f97\u4ee5\u89e3\u8026\u3002<\/p>\n<h3>4. \u6a02\u89c0\u9396\u5b9a<\/h3>\n<p>\u7cfb\u7d71\u4e0d\u6703\u5728\u8b80\u53d6\u6216\u4fee\u6539\u8cc7\u6599\u524d\u5148\u53d6\u5f97\u9396\uff0c\u800c\u662f\u5728\u63d0\u4ea4\u6642\u6aa2\u67e5\u885d\u7a81\u3002\u5982\u679c\u53e6\u4e00\u500b\u9032\u7a0b\u81ea\u8b80\u53d6\u4ee5\u4f86\u5df2\u4fee\u6539\u8cc7\u6599\uff0c\u5247\u4ea4\u6613\u5931\u6557\uff0c\u5fc5\u9808\u91cd\u8a66\u3002\u9019\u53ef\u6e1b\u5c11\u9396\u7684\u6301\u6709\u6642\u9593\uff0c\u5f9e\u800c\u6700\u5c0f\u5316\u6b7b\u9396\u7684\u767c\u751f\u6a5f\u6703\u3002<\/p>\n<h2>\u9810\u9632\u7b56\u7565\u7684\u6bd4\u8f03<\/h2>\n<table border=\"1\" cellpadding=\"5\" cellspacing=\"0\">\n<thead>\n<tr>\n<th>\u7b56\u7565<\/th>\n<th>\u9632\u6b62\u7684\u689d\u4ef6<\/th>\n<th>\u8907\u96dc\u5ea6<\/th>\n<th>\u6027\u80fd\u5f71\u97ff<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u9396\u5b9a\u9806\u5e8f<\/td>\n<td>\u5faa\u74b0\u7b49\u5f85<\/td>\n<td>\u9ad8<\/td>\n<td>\u4f4e<\/td>\n<\/tr>\n<tr>\n<td>\u8d85\u6642<\/td>\n<td>\u6301\u6709\u4e26\u7b49\u5f85\uff08\u9593\u63a5\uff09<\/td>\n<td>\u4f4e<\/td>\n<td>\u4e2d\u7b49\uff08\u91cd\u8a66\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u6a02\u89c0\u9396\u5b9a<\/td>\n<td>\u4e92\u65a5\uff08\u9577\u671f\uff09<\/td>\n<td>\u4e2d\u7b49<\/td>\n<td>\u53ef\u8b8a<\/td>\n<\/tr>\n<tr>\n<td>\u7570\u6b65\u6d41\u7a0b<\/td>\n<td>\u6301\u6709\u4e26\u7b49\u5f85<\/td>\n<td>\u9ad8<\/td>\n<td>\u4f4e<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u57fa\u65bc\u5716\u793a\u5206\u6790\u7684\u5be6\u65bd\u6b65\u9a5f<\/h2>\n<p>\u70ba\u4e86\u5c07\u6b64\u65b9\u6cd5\u6574\u5408\u5230\u60a8\u7684\u958b\u767c\u5de5\u4f5c\u6d41\u7a0b\u4e2d\uff0c\u8acb\u9075\u5faa\u4ee5\u4e0b\u6b65\u9a5f\uff1a<\/p>\n<ul>\n<li><strong>\u9032\u884c\u8a2d\u8a08\u5be9\u67e5\uff1a<\/strong> \u5728\u7de8\u5beb\u7a0b\u5f0f\u78bc\u4e4b\u524d\uff0c\u70ba\u65b0\u529f\u80fd\u5efa\u7acb\u901a\u8a0a\u5716\u8868\u3002\u5c08\u6ce8\u65bc\u8cc7\u6599\u5b58\u53d6\u8def\u5f91\u3002<\/li>\n<li><strong>\u6a19\u8a3b\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\uff1a<\/strong> \u5728\u5716\u8868\u4e0a\u6a19\u8a18\u6bcf\u4e00\u7b46\u8cc7\u6599\u5eab\u5beb\u5165\u3001\u5feb\u53d6\u66f4\u65b0\u6216\u6a94\u6848\u64cd\u4f5c\u3002<\/li>\n<li><strong>\u57f7\u884c\u5faa\u74b0\u6aa2\u6e2c\u6f14\u7b97\u6cd5\uff1a<\/strong> \u82e5\u4f7f\u7528\u81ea\u52d5\u5316\u5de5\u5177\uff0c\u61c9\u5957\u7528\u5716\u5f62\u6f14\u7b97\u6cd5\u4f86\u6aa2\u6e2c\u5f9e\u5716\u8868\u884d\u751f\u7684\u76f8\u4f9d\u6027\u5716\u4e2d\u7684\u5faa\u74b0\u3002<\/li>\n<li><strong>\u91cd\u69cb\u4ee5\u5be6\u73fe\u7368\u7acb\u6027\uff1a<\/strong> \u82e5\u767c\u73fe\u5faa\u74b0\uff0c\u61c9\u91cd\u69cb\u7a0b\u5f0f\u78bc\u4ee5\u6253\u7834\u76f8\u4f9d\u6027\u3002\u9019\u53ef\u80fd\u6d89\u53ca\u5f15\u5165\u4e2d\u4ecb\u670d\u52d9\u6216\u8b8a\u66f4\u8cc7\u6599\u6a21\u578b\u3002<\/li>\n<li><strong>\u900f\u904e\u8ca0\u8f09\u6e2c\u8a66\u9032\u884c\u9a57\u8b49\uff1a<\/strong> \u6a21\u64ec\u9ad8\u4f75\u767c\u60c5\u5883\uff0c\u4ee5\u78ba\u4fdd\u5728\u58d3\u529b\u4e0b\u4e0d\u6703\u51fa\u73fe\u6b7b\u7d50\u6a21\u5f0f\u3002<\/li>\n<\/ul>\n<h2>\u76e3\u63a7\u8207\u53ef\u89c0\u5bdf\u6027 \ud83e\uddea<\/h2>\n<p>\u5373\u4f7f\u8a2d\u8a08\u8b39\u614e\uff0c\u57f7\u884c\u6642\u671f\u7684\u689d\u4ef6\u4ecd\u53ef\u80fd\u6539\u8b8a\u3002\u76e3\u63a7\u5de5\u5177\u61c9\u8a2d\u5b9a\u70ba\u5075\u6e2c\u6b7b\u7d50\u7684\u8de1\u8c61\u3002\u95dc\u9375\u6307\u6a19\u5305\u62ec\uff1a<\/p>\n<ul>\n<li><strong>\u57f7\u884c\u7dd2\u6578\u91cf\uff1a<\/strong> \u88ab\u963b\u585e\u57f7\u884c\u7dd2\u7684\u7a81\u7136\u589e\u52a0\uff0c\u53ef\u80fd\u8868\u793a\u8cc7\u6e90\u7af6\u722d\u3002<\/li>\n<li><strong>\u9396\u7b49\u5f85\u6642\u9593\uff1a<\/strong> \u82e5\u53d6\u5f97\u9396\u7684\u5e73\u5747\u6642\u9593\u986f\u8457\u589e\u52a0\uff0c\u8868\u793a\u7af6\u722d\u6b63\u5728\u4e0a\u5347\u3002<\/li>\n<li><strong>\u4ea4\u6613\u56de\u6efe\uff1a<\/strong> \u56e0\u903e\u6642\u6216\u885d\u7a81\u5c0e\u81f4\u7684\u9ad8\u983b\u7387\u56de\u6efe\uff0c\u8868\u793a\u9396\u5b9a\u7b56\u7565\u53ef\u80fd\u904e\u65bc\u6fc0\u9032\u3002<\/li>\n<li><strong>\u6b7b\u7d50\u6aa2\u6e2c\u65e5\u8a8c\uff1a<\/strong> 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