{"id":194205,"date":"2024-11-13T04:43:18","date_gmt":"2024-11-12T20:43:18","guid":{"rendered":"https:\/\/server.hk\/cnblog\/194205\/"},"modified":"2024-11-13T04:43:20","modified_gmt":"2024-11-12T20:43:20","slug":"%e4%b8%80%e8%87%b4%e6%80%a7%e5%93%88%e5%b8%8c%e7%ae%97%e6%b3%95%e5%9c%a8%e6%a7%8b%e5%bb%baredis%e9%9b%86%e7%be%a4%e4%b8%ad%e7%9a%84%e6%87%89%e7%94%a8%ef%bc%88redis%e9%9b%86%e7%be%a4%e4%b8%80%e8%87%b4","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/194205\/","title":{"rendered":"\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u5728\u69cb\u5efaRedis\u96c6\u7fa4\u4e2d\u7684\u61c9\u7528\uff08redis\u96c6\u7fa4\u4e00\u81f4\u6027\u54c8\u5e0c\uff09"},"content":{"rendered":"<h1 id=\"%e4%b8%80%e8%87%b4%e6%80%a7%e5%93%88%e5%b8%8c%e7%ae%97%e6%b3%95%e5%9c%a8%e6%a7%8b%e5%bb%baredis%e9%9b%86%e7%be%a4%e4%b8%ad%e7%9a%84%e6%87%89%e7%94%a8-YwvSPfxlAF\">\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u5728\u69cb\u5efaRedis\u96c6\u7fa4\u4e2d\u7684\u61c9\u7528<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u9a45\u52d5\u4e16\u754c\u4e2d\uff0cRedis\u4f5c\u70ba\u4e00\u7a2e\u9ad8\u6548\u7684\u9375\u503c\u5b58\u5132\u7cfb\u7d71\uff0c\u5ee3\u6cdb\u61c9\u7528\u65bc\u5404\u7a2e\u5834\u666f\uff0c\u5305\u62ec\u7de9\u5b58\u3001\u6d88\u606f\u968a\u5217\u548c\u6578\u64da\u6301\u4e45\u5316\u7b49\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u9577\uff0c\u55ae\u4e00Redis\u5be6\u4f8b\u7684\u6027\u80fd\u53ef\u80fd\u7121\u6cd5\u6eff\u8db3\u9700\u6c42\uff0c\u56e0\u6b64\u69cb\u5efaRedis\u96c6\u7fa4\u6210\u70ba\u4e86\u4e00\u7a2e\u5e38\u898b\u7684\u89e3\u6c7a\u65b9\u6848\u3002\u5728\u9019\u500b\u904e\u7a0b\u4e2d\uff0c\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u7684\u61c9\u7528\u986f\u5f97\u5c24\u70ba\u91cd\u8981\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af%e4%b8%80%e8%87%b4%e6%80%a7%e5%93%88%e5%b8%8c%e7%ae%97%e6%b3%95%ef%bc%9f-YwvSPfxlAF\">\u4ec0\u9ebc\u662f\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\uff1f<\/h2>\n<p>\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u662f\u4e00\u7a2e\u7279\u6b8a\u7684\u54c8\u5e0c\u7b97\u6cd5\uff0c\u65e8\u5728\u89e3\u6c7a\u5206\u4f48\u5f0f\u7cfb\u7d71\u4e2d\u7bc0\u9ede\u8b8a\u66f4\u6240\u5e36\u4f86\u7684\u6578\u64da\u91cd\u65b0\u5206\u914d\u554f\u984c\u3002\u50b3\u7d71\u7684\u54c8\u5e0c\u7b97\u6cd5\u5728\u589e\u52a0\u6216\u522a\u9664\u7bc0\u9ede\u6642\uff0c\u6703\u5c0e\u81f4\u5927\u91cf\u6578\u64da\u9700\u8981\u91cd\u65b0\u5206\u914d\uff0c\u9019\u5728\u5927\u898f\u6a21\u7cfb\u7d71\u4e2d\u662f\u975e\u5e38\u4f4e\u6548\u7684\u3002\u800c\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u5247\u901a\u904e\u5c07\u6578\u64da\u5206\u4f48\u5728\u4e00\u500b\u865b\u64ec\u7684\u74b0\u4e0a\uff0c\u4f86\u6700\u5c0f\u5316\u9019\u7a2e\u6578\u64da\u9077\u79fb\u7684\u5f71\u97ff\u3002<\/p>\n<h2 id=\"%e4%b8%80%e8%87%b4%e6%80%a7%e5%93%88%e5%b8%8c%e5%9c%a8redis%e9%9b%86%e7%be%a4%e4%b8%ad%e7%9a%84%e6%87%89%e7%94%a8-YwvSPfxlAF\">\u4e00\u81f4\u6027\u54c8\u5e0c\u5728Redis\u96c6\u7fa4\u4e2d\u7684\u61c9\u7528<\/h2>\n<p>\u5728Redis\u96c6\u7fa4\u4e2d\uff0c\u6578\u64da\u7684\u5206\u4f48\u662f\u901a\u904e\u54c8\u5e0c\u69fd\u4f86\u5be6\u73fe\u7684\u3002\u6bcf\u500bRedis\u5be6\u4f8b\uff08\u6216\u7a31\u70ba\u7bc0\u9ede\uff09\u6703\u8ca0\u8cac\u4e00\u5b9a\u7bc4\u570d\u7684\u54c8\u5e0c\u69fd\u3002\u7576\u4f7f\u7528\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u6642\uff0c\u6578\u64da\u7684\u9375\u6703\u88ab\u54c8\u5e0c\u5230\u9019\u500b\u865b\u64ec\u74b0\u4e0a\uff0c\u7136\u5f8c\u6839\u64da\u54c8\u5e0c\u503c\u627e\u5230\u5c0d\u61c9\u7684\u7bc0\u9ede\u3002\u9019\u6a23\u7684\u8a2d\u8a08\u4f7f\u5f97\u7576\u7bc0\u9ede\u589e\u52a0\u6216\u6e1b\u5c11\u6642\uff0c\u53ea\u6709\u5c11\u91cf\u7684\u6578\u64da\u9700\u8981\u91cd\u65b0\u5206\u914d\uff0c\u5f9e\u800c\u63d0\u9ad8\u4e86\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u64f4\u5c55\u6027\u3002<\/p>\n<h3 id=\"%e4%b8%80%e8%87%b4%e6%80%a7%e5%93%88%e5%b8%8c%e7%9a%84%e5%af%a6%e7%8f%be%e6%ad%a5%e9%a9%9f-YwvSPfxlAF\">\u4e00\u81f4\u6027\u54c8\u5e0c\u7684\u5be6\u73fe\u6b65\u9a5f<\/h3>\n<ul>\n<li><strong>\u5efa\u7acb\u865b\u64ec\u74b0\uff1a<\/strong>\u5c07\u6240\u6709\u7bc0\u9ede\u6620\u5c04\u5230\u4e00\u500b\u865b\u64ec\u7684\u5713\u74b0\u4e0a\uff0c\u6bcf\u500b\u7bc0\u9ede\u6703\u6709\u4e00\u500b\u6216\u591a\u500b\u865b\u64ec\u7bc0\u9ede\uff0c\u4ee5\u63d0\u9ad8\u6578\u64da\u7684\u5747\u52fb\u5206\u4f48\u3002<\/li>\n<li><strong>\u8a08\u7b97\u54c8\u5e0c\u503c\uff1a<\/strong>\u5c0d\u6bcf\u500b\u9375\u9032\u884c\u54c8\u5e0c\u8a08\u7b97\uff0c\u7372\u5f97\u5176\u5728\u865b\u64ec\u74b0\u4e0a\u7684\u4f4d\u7f6e\u3002<\/li>\n<li><strong>\u67e5\u627e\u7bc0\u9ede\uff1a<\/strong>\u6839\u64da\u54c8\u5e0c\u503c\u627e\u5230\u5c0d\u61c9\u7684\u7bc0\u9ede\uff0c\u4e26\u5c07\u6578\u64da\u5b58\u5132\u5728\u8a72\u7bc0\u9ede\u4e0a\u3002<\/li>\n<li><strong>\u8655\u7406\u7bc0\u9ede\u8b8a\u66f4\uff1a<\/strong>\u7576\u7bc0\u9ede\u589e\u52a0\u6216\u6e1b\u5c11\u6642\uff0c\u50c5\u9700\u91cd\u65b0\u5206\u914d\u8207\u8a72\u7bc0\u9ede\u76f8\u9130\u7684\u5c11\u91cf\u6578\u64da\u3002<\/li>\n<\/ul>\n<h3 id=\"%e7%a4%ba%e4%be%8b%e4%bb%a3%e7%a2%bc-YwvSPfxlAF\">\u793a\u4f8b\u4ee3\u78bc<\/h3>\n<pre><code>\nimport hashlib\n\nclass ConsistentHash:\n    def __init__(self, nodes=None):\n        self.nodes = nodes or []\n        self.ring = {}\n        self.sorted_keys = []\n        for node in self.nodes:\n            self.add_node(node)\n\n    def _hash(self, key):\n        return int(hashlib.md5(key.encode('utf-8')).hexdigest(), 16)\n\n    def add_node(self, node):\n        for i in range(100):  # \u6bcf\u500b\u7bc0\u9ede\u751f\u6210100\u500b\u865b\u64ec\u7bc0\u9ede\n            virtual_node = f\"{node}#{i}\"\n            self.ring[self._hash(virtual_node)] = node\n        self.sorted_keys = sorted(self.ring.keys())\n\n    def get_node(self, key):\n        if not self.ring:\n            return None\n        hash_value = self._hash(key)\n        for k in self.sorted_keys:\n            if hash_value &lt;= k:\n                return self.ring[k]\n        return self.ring[self.sorted_keys[0]]\n<\/code><\/pre>\n<h2 id=\"%e4%b8%80%e8%87%b4%e6%80%a7%e5%93%88%e5%b8%8c%e7%9a%84%e5%84%aa%e5%8b%a2-YwvSPfxlAF\">\u4e00\u81f4\u6027\u54c8\u5e0c\u7684\u512a\u52e2<\/h2>\n<p>\u4f7f\u7528\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u69cb\u5efaRedis\u96c6\u7fa4\u6709\u591a\u500b\u512a\u52e2\uff1a<\/p>\n<ul>\n<li><strong>\u6e1b\u5c11\u6578\u64da\u9077\u79fb\uff1a<\/strong>\u7bc0\u9ede\u8b8a\u66f4\u6642\uff0c\u53ea\u6709\u5c11\u91cf\u6578\u64da\u9700\u8981\u91cd\u65b0\u5206\u914d\uff0c\u9019\u6a23\u53ef\u4ee5\u6e1b\u5c11\u7cfb\u7d71\u7684\u8ca0\u64d4\u3002<\/li>\n<li><strong>\u63d0\u9ad8\u64f4\u5c55\u6027\uff1a<\/strong>\u53ef\u4ee5\u8f15\u9b06\u5730\u6dfb\u52a0\u6216\u522a\u9664\u7bc0\u9ede\uff0c\u800c\u4e0d\u6703\u5f71\u97ff\u6574\u9ad4\u7cfb\u7d71\u7684\u6027\u80fd\u3002<\/li>\n<li><strong>\u5747\u8861\u8ca0\u8f09\uff1a<\/strong>\u901a\u904e\u865b\u64ec\u7bc0\u9ede\u7684\u8a2d\u8a08\uff0c\u53ef\u4ee5\u5be6\u73fe\u66f4\u5747\u52fb\u7684\u6578\u64da\u5206\u4f48\u3002<\/li>\n<\/ul>\n<h2 id=\"%e7%b8%bd%e7%b5%90-YwvSPfxlAF\">\u7e3d\u7d50<\/h2>\n<p>\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u5728\u69cb\u5efaRedis\u96c6\u7fa4\u4e2d\u626e\u6f14\u8457\u81f3\u95dc\u91cd\u8981\u7684\u89d2\u8272\uff0c\u901a\u904e\u6709\u6548\u5730\u7ba1\u7406\u6578\u64da\u7684\u5206\u4f48\u548c\u7bc0\u9ede\u7684\u8b8a\u66f4\uff0c\u63d0\u5347\u4e86\u7cfb\u7d71\u7684\u7a69\u5b9a\u6027\u548c\u64f4\u5c55\u6027\u3002\u5c0d\u65bc\u9700\u8981\u9ad8\u6027\u80fd\u548c\u9ad8\u53ef\u7528\u6027\u7684\u61c9\u7528\u5834\u666f\uff0c\u9078\u64c7\u5408\u9069\u7684Redis\u96c6\u7fa4\u67b6\u69cb\u662f\u975e\u5e38\u91cd\u8981\u7684\u3002\u5982\u679c\u60a8\u6b63\u5728\u5c0b\u627e\u53ef\u9760\u7684 <a href=\"https:\/\/server.hk\">\u9999\u6e2fVPS<\/a> \u89e3\u6c7a\u65b9\u6848\uff0cServer.HK \u63d0\u4f9b\u591a\u7a2e\u9078\u64c7\u4ee5\u6eff\u8db3\u60a8\u7684\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5\u5728Redis\u96c6\u7fa4\u4e2d\u7684\u61c9\u7528\uff0c\u63d0\u5347\u6578\u64da\u5206\u5e03\u6548\u7387\uff0c\u5be6\u73fe\u9ad8\u53ef\u7528\u6027\u548c\u64f4\u5c55\u6027\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-194205","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194205","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=194205"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194205\/revisions"}],"predecessor-version":[{"id":194206,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/194205\/revisions\/194206"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=194205"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=194205"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=194205"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}