{"id":202249,"date":"2025-05-10T11:40:18","date_gmt":"2025-05-10T03:40:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/202249\/"},"modified":"2025-05-10T11:40:18","modified_gmt":"2025-05-10T03:40:18","slug":"redis%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e5%88%86%e5%b8%83%e5%bc%8f%e4%ba%8b%e5%8a%a1%e7%9a%84%e4%b8%80%e8%87%b4%e6%80%a7","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/202249\/","title":{"rendered":"Redis\u5982\u4f55\u5b9e\u73b0\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u4e00\u81f4\u6027"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>Redis\u5982\u4f55\u5b9e\u73b0\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u4e00\u81f4\u6027<\/h1>\n<p>\u5bf9\u4e8e\u4e00\u4e2a\u6570\u636e\u5e93\u5f00\u53d1\u8005\u6765\u8bf4\uff0c\u7262\u56fa\u624e\u5b9e\u7684\u57fa\u7840\u662f\u5341\u5206\u91cd\u8981\u7684\uff0cgolang\u5b66\u4e60\u7f51\u5c31\u6765\u5e26\u5927\u5bb6\u4e00\u70b9\u70b9\u7684\u638c\u63e1\u57fa\u7840\u77e5\u8bc6\u70b9\u3002\u4eca\u5929\u672c\u7bc7\u6587\u7ae0\u5e26\u5927\u5bb6\u4e86\u89e3\u300aRedis\u5982\u4f55\u5b9e\u73b0\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u4e00\u81f4\u6027\u300b\uff0c\u4e3b\u8981\u4ecb\u7ecd\u4e86\uff0c\u5e0c\u671b\u5bf9\u5927\u5bb6\u7684\u77e5\u8bc6\u79ef\u7d2f\u6709\u6240\u5e2e\u52a9\uff0c\u5feb\u70b9\u6536\u85cf\u8d77\u6765\u5427\uff0c\u5426\u5219\u9700\u8981\u65f6\u5c31\u627e\u4e0d\u5230\u4e86\uff01<\/p>\n<p>Redis\u662f\u4e00\u4e2a\u9ad8\u6027\u80fd\u3001\u5206\u5e03\u5f0f\u5185\u5b58\u6570\u636e\u5e93\uff0c\u88ab\u5e7f\u6cdb\u5e94\u7528\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\u3002\u5728\u5206\u5e03\u5f0f\u7cfb\u7edf\u4e2d\uff0c\u5982\u4f55\u5b9e\u73b0\u4e8b\u52a1\u7684\u4e00\u81f4\u6027\u4e00\u76f4\u662f\u4e00\u4e2a\u96be\u9898\uff0c\u800cRedis\u63d0\u4f9b\u7684\u4e8b\u52a1\u673a\u5236\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u672c\u6587\u5c06\u4ecb\u7ecdRedis\u5982\u4f55\u5b9e\u73b0\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u4e00\u81f4\u6027\uff0c\u5e76\u5c55\u793a\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>\u4e00\u3001Redis\u4e8b\u52a1\u673a\u5236\u7b80\u4ecb<\/p>\n<p>Redis\u57282.0\u7248\u672c\u4e2d\u5c31\u63d0\u4f9b\u4e86\u4e8b\u52a1\u673a\u5236\uff0c\u8be5\u673a\u5236\u901a\u8fc7MULTI\u3001EXEC\u3001WATCH\u3001DISCARD\u548cUNWATCH\u4e94\u4e2a\u547d\u4ee4\u6765\u5b9e\u73b0\u3002\u4e8b\u52a1\u4e2d\u7684\u64cd\u4f5c\u4f1a\u88ab\u987a\u5e8f\u8bb0\u5f55\u5728\u4e00\u4e2a\u961f\u5217\u4e2d\uff0c\u5e76\u5728EXEC\u547d\u4ee4\u88ab\u8c03\u7528\u65f6\u6279\u91cf\u6267\u884c\u3002\u5982\u679c\u6574\u4e2a\u4e8b\u52a1\u4ee5\u6210\u529f\u63d0\u4ea4\uff0c\u90a3\u4e48\u8bb0\u5f55\u961f\u5217\u4e2d\u7684\u6240\u6709\u64cd\u4f5c\u5c06\u88ab\u4f9d\u6b21\u6267\u884c\uff1b\u5982\u679c\u4e00\u4e2a\u64cd\u4f5c\u5931\u8d25\uff0c\u90a3\u4e48\u6574\u4e2a\u4e8b\u52a1\u5c06\u88ab\u56de\u6eda\u3002\u591a\u4e2a\u5ba2\u6237\u7aef\u53ef\u4ee5\u540c\u65f6\u5f00\u542f\u81ea\u5df1\u7684\u4e8b\u52a1\uff0c\u7531\u4e8e\u9762\u5411\u64cd\u4f5c\u8bb0\u5f55\u961f\u5217\u6267\u884c\uff0c\u6240\u4ee5\u4e8b\u52a1\u4e4b\u95f4\u662f\u76f8\u4e92\u72ec\u7acb\u7684\u3002<\/p>\n<p>\u4e8c\u3001Redis\u5206\u5e03\u5f0f\u4e8b\u52a1\u5b9e\u73b0\u539f\u7406<\/p>\n<p>\u5728Redis\u5355\u673a\u4e8b\u52a1\u4e2d\uff0c\u6bcf\u4e2a\u5ba2\u6237\u7aef\u90fd\u662f\u7531\u540c\u4e00\u4e2a\u8fdb\u7a0b\u5904\u7406\uff0c\u800c\u5728\u5206\u5e03\u5f0f\u60c5\u51b5\u4e0b\uff0c\u6bcf\u4e2a\u5ba2\u6237\u7aef\u53ef\u80fd\u5bf9\u5e94\u4e0d\u540c\u7684Redis\u5b9e\u4f8b\uff0c\u8fd9\u5c31\u9700\u8981\u5b9e\u73b0\u5206\u5e03\u5f0f\u4e8b\u52a1\u4e00\u81f4\u6027\u6765\u4fdd\u8bc1\u6570\u636e\u7684\u6b63\u786e\u6027\u3002<\/p>\n<p>Redis\u5b9e\u73b0\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u5173\u952e\u5728\u4e8eWATCH\u548cUNWATCH\u547d\u4ee4\u3002\u6bcf\u4e2a\u5ba2\u6237\u7aef\u53ef\u4ee5\u901a\u8fc7WATCH\u547d\u4ee4\u5728Redis\u4e2d\u6807\u8bb0\u4e00\u4e9b\u5173\u952e\u7684\u6570\u636e\uff0c\u5f53\u8fd9\u4e9b\u6570\u636e\u88ab\u5176\u4ed6\u5ba2\u6237\u7aef\u4fee\u6539\u65f6\uff0c\u8fd9\u4e2a\u5ba2\u6237\u7aef\u7684\u4e8b\u52a1\u5c31\u4f1a\u88ab\u7ec8\u6b62\u3002\u901a\u8fc7UNWATCH\u547d\u4ee4\u53ef\u4ee5\u89e3\u9664\u8fd9\u4e2a\u6807\u8bb0\u3002\u8fd9\u6837\u505a\u7684\u539f\u56e0\u662f\u5f53\u7528\u6237\u5f00\u542f\u4e8b\u52a1\u65f6\uff0c\u5982\u679c\u4e0e\u5176\u5b83\u5ba2\u670d\u7aef\u5b58\u5728\u76f8\u540c\u7684\u5199\u5165\u7ade\u4e89\uff0c\u5219\u4e8b\u52a1\u4f1a\u56de\u6eda\uff0c\u5e76\u8bbe\u7f6e\u4e00\u4e2a\u4e8b\u52a1\u5931\u8d25\u7684\u4fe1\u53f7\u3002\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u5ba2\u6237\u7aef\u9700\u8981\u5c06\u5176\u6240\u6709\u9700\u8981\u88ab\u76d1\u63a7\u7684\u5173\u952e\u6570\u636e\u552f\u4e00\u6807\u8bc6\uff0c\u5f53\u53d1\u751f\u51b2\u7a81\u65f6\uff0c\u5ba2\u6237\u7aef\u4f1a\u6839\u636e\u8fd9\u4e9b\u6807\u8bc6\u5224\u5b9a\u662f\u5426\u9700\u8981\u56de\u6eda\u4e8b\u52a1\u3002\u5982\u679c\u9700\u8981\u56de\u6eda\uff0c\u5ba2\u6237\u7aef\u4f1a\u91cd\u65b0\u5c1d\u8bd5\u6267\u884c\u8be5\u4e8b\u52a1\u3002<\/p>\n<p>\u4e09\u3001\u4ee3\u7801\u793a\u4f8b<\/p>\n<p>\u4e0b\u9762\u6211\u4eec\u7528Python\u5b9e\u73b0\u4e00\u4e2a\u7b80\u5355\u7684\u5206\u5e03\u5f0f\u4e8b\u52a1\uff0c\u6a21\u62df\u4e24\u4e2a\u5ba2\u6237\u7aef\u5206\u522b\u5728\u4e0d\u540c\u7684Redis\u5b9e\u4f8b\u4e0a\u6267\u884c\u4e8b\u52a1\uff0c\u5b9e\u73b0\u8f6c\u8d26\u64cd\u4f5c\uff0c\u8981\u6c42\u8f6c\u8d26\u5fc5\u987b\u6210\u529f\uff0c\u4f7f\u7528WATCH\/UNWATCH\u547d\u4ee4\u5b9e\u73b0\u4e00\u81f4\u6027\u63a7\u5236\u3002<\/p>\n<p>Prerequisites\uff1a<\/p>\n<ul>\n<li>Python 3.x<\/li>\n<li>Redis-py<\/li>\n<\/ul>\n<p>\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n<pre>import redis\n\n# \u65b0\u5efa\u4e24\u4e2a Redis \u5b9e\u4f8b \nredis1 = redis.StrictRedis(host=\"localhost\", port=6379, db=0)\nredis2 = redis.StrictRedis(host=\"localhost\", port=6380, db=0)\n\n# \u6211\u4eec\u6a21\u62df\u4e00\u4e0b\u4e00\u4e2a\u8f6c\u5e10\u64cd\u4f5c\ndef transfer(from_user, to_user, value):\n    # \u4e24\u4e2a\u5b9e\u4f8b\u90fd\u8981\u6267\u884c\u4e8b\u52a1\n    tx = redis1.pipeline()\n    tx2 = redis2.pipeline()\n\n    # Watch \u76d1\u63a7 from_user \u548c to_user \u7684 balance \u503c\n    tx.watch(from_user, to_user)\n    tx2.watch(from_user, to_user)\n\n    # \u5982\u679c from_user \u7684 balance \u503c\u51cf\u53bb\u8f6c\u8d26\u6570\u503c\uff0c\u5c0f\u4e8e0\n    if tx.get(from_user) &lt; int(value):\n        tx.unwatch()\n    else:\n        tx.multi()\n        tx.decrby(from_user, int(value))\n\n        # \u901a\u8fc72\u4e2a\u5b9e\u4f8b\u4e4b\u95f4\u7684\u7f51\u7edc\u901a\u4fe1\uff0c\u5c06 balance \u653e\u5165\u53e6\u4e00\u4e2a\n        tx2.multi()\n        tx2.incrby(to_user, int(value))\n\n        print(tx.execute())\n        print(tx2.execute())\n\ntransfer('user1', 'user2', '100') #\u6267\u884c\u8f6c\u8d26\u64cd\u4f5c\n<\/pre>\n<p>\u4ee3\u7801\u4e2d\u65b0\u5efa\u4e86\u4e24\u4e2a Redis \u5b9e\u4f8b\u3002\u7136\u540e\u5b9a\u4e49\u4e86\u4e00\u4e2a transfer \u51fd\u6570\uff0c\u8be5\u51fd\u6570\u6a21\u62df\u4e00\u4e2a\u8f6c\u8d26\u64cd\u4f5c\uff0c\u9700\u8981\u4f20\u5165\u8f6c\u8d26\u7684 from_user\u3001to_user \u548c value \u53c2\u6570\u3002\u5728\u51fd\u6570\u5185\u90e8\uff0c\u6838\u5fc3\u90e8\u5206\u662f\u4f7f\u7528 WATCH \u547d\u4ee4\u5728\u4e24\u4e2a Redis \u5b9e\u4f8b\u4e0a\u76d1\u63a7 from_user \u548c to_user \u7684 balance \u503c\uff0c\u907f\u514d\u5728\u8f6c\u8d26\u8fc7\u7a0b\u4e2d\u51fa\u73b0\u7ade\u4e89\u6761\u4ef6\u3002\u4e4b\u540e\u4f7f\u7528\u4e8b\u52a1\u4e24\u4e2a Redis \u5b9e\u4f8b\u4e0a\u7684\u4f59\u989d\u53d8\u5316\uff0c\u786e\u4fdd\u8f6c\u8d26\u64cd\u4f5c\u7684\u4e00\u81f4\u6027\u3002<\/p>\n<p>\u603b\u7ed3<\/p>\n<p>Redis\u652f\u6301\u4e8b\u52a1\u673a\u5236\uff0c\u53ef\u4ee5\u4fdd\u8bc1\u5355\u4e2aRedis\u5b9e\u4f8b\u4e0a\u7684\u4e00\u81f4\u6027\u3002\u4f46\u5728\u5206\u5e03\u5f0f\u73af\u5883\u4e0b\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u591a\u4e2aRedis\u5b9e\u4f8b\u4e0a\u7684\u4e00\u81f4\u6027\uff0c\u9700\u8981\u5f15\u5165\u5206\u5e03\u5f0f\u4e8b\u52a1\u673a\u5236\u3002Redis\u901a\u8fc7WATCH\u548cUNWATCH\u547d\u4ee4\u5b9e\u73b0\u4e86\u8be5\u673a\u5236\u3002\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee3\u7801\u793a\u4f8b\u66f4\u597d\u7684\u7406\u89e3Redis\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u5b9e\u73b0\u539f\u7406\u3002<\/p>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5982\u4f55\u5229\u7528Redis\u5b9e\u73b0\u6570\u636e\u7edf\u8ba1\u529f\u80fd\n <\/dd>\n<\/dl>\n<dl>\n<dt>\n <\/dt>\n<dd>\n   \u5982\u4f55\u4f7f\u7528Memcache\u63d0\u9ad8PHP\u5e94\u7528\u7a0b\u5e8f\u7684\u5e76\u53d1\u6027\u80fd\uff1f\n <\/dd>\n<\/dl>\n","protected":false},"excerpt":{"rendered":"<p>Redis\u5982\u4f55\u5b9e\u73b0\u5206\u5e03\u5f0f\u4e8b\u52a1\u7684\u4e00&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-202249","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202249","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=202249"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/202249\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=202249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=202249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=202249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}