{"id":50406,"date":"2023-11-12T15:44:24","date_gmt":"2022-12-12T22:57:29","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%b8%80%e8%87%b4%e6%80%a7%e5%93%88%e5%b8%8c-yizhixing-hashing\/"},"modified":"2024-05-04T08:40:05","modified_gmt":"2024-05-04T00:40:05","slug":"%e4%b8%80%e8%87%b4%e6%80%a7%e5%93%88%e5%b8%8c-yizhixing-hashing","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%b8%80%e8%87%b4%e6%80%a7%e5%93%88%e5%b8%8c-yizhixing-hashing\/","title":{"rendered":"\u4e00\u81f4\u6027\u54c8\u5e0c (Y\u012bzh\u00ecx\u00ecng H\u0101sh\u012bng)"},"content":{"rendered":"

\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5<\/h1>\n

\u5982\u679c\u8981\u5c06\u591a\u4e2a\u6570\u636e\u5206\u6563\u5230\u4efb\u610f\u8282\u70b9\u4e0a\uff0c\u6709\u4e00\u79cd\u65b9\u6cd5\u662f\u5c06\u6570\u636e\u7684ID\u6216\u54c8\u5e0c\u503c\u9664\u4ee5\u4fdd\u5b58\u8282\u70b9\u7684\u603b\u6570\uff0c\u7136\u540e\u5f97\u5230\u4fdd\u5b58\u7684\u8282\u70b9\u3002\u7136\u800c\uff0c\u8fd9\u79cd\u65b9\u6cd5\u7684\u7f3a\u70b9\u662f\u5982\u679c\u8282\u70b9\u6570\u91cf\u53d1\u751f\u53d8\u5316\uff0c\u5c06\u5bfc\u81f4\u6574\u4e2a\u6570\u636e\u7684\u8282\u70b9\u79fb\u52a8\u3002
\n\u56e0\u6b64\uff0c\u5728\u8282\u70b9\u6570\u91cf\u589e\u51cf\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e00\u79cd\u79f0\u4e3a\u4e00\u81f4\u6027\u54c8\u5e0c\u7684\u6570\u636e\u5e03\u5c40\u65b9\u6cd5\uff0c\u4ee5\u786e\u4fdd\u6700\u4f4e\u9650\u5ea6\u7684\u6570\u636e\u79fb\u52a8\u3002
\n\u8fd9\u79cd\u65b9\u6cd5\u88ab\u7528\u4e8e\u5206\u5e03\u5f0f\u6570\u636e\u5e93\uff0c\u5982Cassandra\u548cAmazon Dynamo\uff0c\u7528\u4e8e\u786e\u5b9a\u6570\u636e\u7684\u5b58\u50a8\u4f4d\u7f6e\u3002<\/p>\n

\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n

\u5927\u81f4\u7684\u65b9\u6cd5<\/h1>\n

\u8bf7\u63d0\u9192\u6211\uff0c\u5982\u679c\u6709\u4efb\u4f55\u4e0d\u8db3\u4e4b\u5904\u3002<\/p>\n

\u5bf9\u4e8e\u6570\u636e\u548c\u8282\u70b9\u7684ID\uff0c\u4f7f\u7528\u540c\u4e00\u4e2a\u53ef\u8fdb\u884c\u5927\u5c0f\u6bd4\u8f83\u7684\u54c8\u5e0c\u51fd\u6570\u3002<\/p>\n

\u5c06\u54c8\u5e0c\u51fd\u6570\u5e94\u7528\u4e8e\u5bc6\u94a5\uff08\u6570\u636e\u7684ID\uff09\u3002<\/h3>\n
# \u4eca\u56de\u306f\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306bmd5\u3092\u4f7f\u7528\r\n<\/span>import<\/span> hashlib<\/span>\r\n\r\nhashed_key<\/span> =<\/span> hashlib<\/span>.<\/span>md5<\/span>(<\/span>str<\/span>(<\/span>key<\/span>)).<\/span>hexdigest<\/span>()<\/span>\r\n\r\n<\/code><\/pre>\n
\u5728\u8282\u70b9\uff08\u5bb9\u5668\uff09\u7684\u4e00\u4fa7\u4e5f\u5e94\u7528\u76f8\u540c\u7684\u54c8\u5e0c\u51fd\u6570<\/h3>\n
# ID\u304c1~5\u306e\u30ce\u30fc\u30c9\u3092\u7528\u610f\u3059\u308b\r\n<\/span>node_ids<\/span> =<\/span> range<\/span>(<\/span>1<\/span>,<\/span> 6<\/span>)<\/span>\r\n\r\n# (\u30ce\u30fc\u30c9ID\u306e\u30cf\u30c3\u30b7\u30e5\u5024 ,\u30ce\u30fc\u30c9ID) \u306e\u30ea\u30b9\u30c8\u3092\u7528\u610f\r\n<\/span>def<\/span> get_hashed_node_list<\/span>(<\/span>node_ids<\/span>):<\/span>\r\n    \"\"\"\r\n    :type node_ids: list of int\r\n    :rtype list \r\n    \"\"\"<\/span>\r\n    hashed_node_list<\/span> =<\/span> []<\/span>\r\n    for<\/span> node_id<\/span> in<\/span> node_ids<\/span>:<\/span>\r\n        hashed_node_id<\/span> =<\/span> hashlib<\/span>.<\/span>md5<\/span>(<\/span>str<\/span>(<\/span>node_id<\/span>).<\/span>encode<\/span>(<\/span>'utf-8'<\/span>)).<\/span>hexdigest<\/span>()<\/span>\r\n        hashed_node_list<\/span>.<\/span>append<\/span>((<\/span>hashed_node_id<\/span>,<\/span> node_id<\/span>))<\/span>\r\n    # \u30cf\u30c3\u30b7\u30e5\u5024\u3067\u30bd\u30fc\u30c8\u3057\u3066\u304a\u304f\r\n<\/span>    return<\/span> sorted<\/span>(<\/span>hashed_node_list<\/span>,<\/span> key<\/span>=<\/span>lambda<\/span> n<\/span>:<\/span> n<\/span>[<\/span>0<\/span>])<\/span>\r\n\r\nhashed_node_list<\/span> =<\/span> get_hashed_node_list<\/span>(<\/span>node_ids<\/span>)<\/span>\r\n\r\n# \u30ce\u30fc\u30c9ID\u3068\u30cf\u30c3\u30b7\u30e5\u5024\u306e\u5bfe\u5fdc\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u306a\u308b\r\n# 1 => c4ca4238a0b923820dcc509a6f75849b\r\n# 2 => c81e728d9d4c2f636f067f89cc14862c\r\n# 3 => eccbc87e4b5ce2fe28308fd9f2a7baf3\r\n# 4 => e4da3b7fbbce2345d7772b0674a318d5\r\n# 5 => e4da3b7fbbce2345d7772b0674a318d5\r\n<\/span><\/code><\/pre>\n
\u5c06\u8282\u70b9\u4ee5\u73af\u5f62\u65b9\u5f0f\u6392\u5e03<\/h3>\n
\u4ee5\u4ee5\u4e0b\u987a\u5e8f\u786e\u5b9a\u5206\u914d\u6570\u636e\u7684\u8282\u70b9\uff1a
\n1. \u4e0e\u952e\u5177\u6709\u76f8\u540c\u54c8\u5e0c\u503c\u7684\u8282\u70b9\u3002
\n2. \u5728\u5177\u6709\u5927\u4e8e\u952e\u7684\u54c8\u5e0c\u503c\u7684\u8282\u70b9\u4e2d\uff0c\u9009\u62e9\u54c8\u5e0c\u503c\u6700\u5c0f\u7684\u8282\u70b9\u3002
\n3. \u9009\u62e9\u54c8\u5e0c\u503c\u6700\u5c0f\u7684\u8282\u70b9\u3002<\/p>\n
\r\ndef<\/span> get_node_id<\/span>(<\/span>hashed_key<\/span>,<\/span> hashed_node_list<\/span>):<\/span>\r\n    \"\"\"\r\n    :type hashed_key: str\r\n    :type hashed_slots: list of (hashed_node_id, node_id)\r\n    :rtype int \r\n    \"\"\"<\/span>\r\n    for<\/span> hashed_node_id<\/span>,<\/span> node_id<\/span> in<\/span> hashed_node_list<\/span>:<\/span>\r\n\r\n        if<\/span> hashed_key<\/span> ==<\/span> hashed_node_id<\/span>:<\/span>\r\n            # 1. \u30ad\u30fc\u3068\u540c\u3058\u30cf\u30c3\u30b7\u30e5\u5024\u306e\u30ce\u30fc\u30c9\r\n<\/span>            return<\/span> node_id<\/span>\r\n\r\n        if<\/span> hashed_key<\/span> <<\/span> hashed_node_id<\/span>:<\/span>\r\n            # 2. \u30ad\u30fc\u3088\u308a\u5927\u304d\u3044\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u6301\u3064\u30ce\u30fc\u30c9\u306e\u4e2d\u3067\u3001\u30cf\u30c3\u30b7\u30e5\u5024\u304c\u6700\u5c0f\u306e\u30ce\u30fc\u30c9\r\n<\/span>            return<\/span> node_id<\/span>\r\n\r\n    # 3. \u3069\u308c\u306b\u3082\u30d2\u30c3\u30c8\u3057\u306a\u3051\u308c\u3070\u30cf\u30c3\u30b7\u30e5\u5024\u304c\u6700\u5c0f\u306e\u30ce\u30fc\u30c9\r\n<\/span>    return<\/span> hashed_nodes<\/span>[<\/span>0<\/span>][<\/span>1<\/span>]<\/span>\r\n<\/code><\/pre>\n
\u6dfb\u52a0\u6570\u636e<\/h3>\n
key_list<\/span> =<\/span> range<\/span>(<\/span>1<\/span>,<\/span> 21<\/span>)<\/span>\r\nnodes<\/span> =<\/span> {<\/span>i<\/span>:<\/span> []<\/span> for<\/span> i<\/span> in<\/span> range<\/span>(<\/span>1<\/span>,<\/span> 6<\/span>)}<\/span>\r\n\r\nhashed_node_list<\/span> =<\/span> get_hashed_node_list<\/span>(<\/span>nodes<\/span>.<\/span>keys<\/span>())<\/span>\r\n\r\nfor<\/span> key<\/span> in<\/span> key_list<\/span>:<\/span>\r\n    hashed_key<\/span> =<\/span> hashlib<\/span>.<\/span>md5<\/span>(<\/span>str<\/span>(<\/span>key<\/span>).<\/span>encode<\/span>(<\/span>'utf-8'<\/span>)).<\/span>hexdigest<\/span>()<\/span>\r\n    target_node_id<\/span> =<\/span> get_node_id<\/span>(<\/span>hashed_key<\/span>,<\/span> hashed_node_list<\/span>)<\/span>\r\n    nodes<\/span>[<\/span>target_node_id<\/span>].<\/span>append<\/span>(<\/span>key<\/span>)<\/span>\r\n<\/code><\/pre>\n
\u5047\u8bbe\u6570\u636e\u7684\u952e\u4e3a1\u523020\u7684\u8fde\u7eedID\uff0c\u90a3\u4e48\u6bcf\u4e2a\u8282\u70b9\u7684\u5206\u914d\u60c5\u51b5\u5982\u4e0b\u3002<\/p>\n
\r\nfor<\/span> k<\/span>,<\/span> v<\/span> in<\/span> nodes<\/span>.<\/span>items<\/span>():<\/span>\r\n    print<\/span>(<\/span>'{} {}'<\/span>.<\/span>format<\/span>(<\/span>k<\/span>,<\/span> v<\/span>))<\/span>\r\n\r\n1<\/span> [<\/span>1<\/span>,<\/span> 12<\/span>,<\/span> 14<\/span>]<\/span>\r\n2<\/span> [<\/span>2<\/span>,<\/span> 13<\/span>,<\/span> 16<\/span>]<\/span>\r\n3<\/span> [<\/span>3<\/span>]<\/span>\r\n4<\/span> [<\/span>4<\/span>,<\/span> 6<\/span>,<\/span> 7<\/span>,<\/span> 9<\/span>,<\/span> 11<\/span>,<\/span> 15<\/span>,<\/span> 17<\/span>,<\/span> 18<\/span>,<\/span> 19<\/span>,<\/span> 20<\/span>]<\/span>\r\n5<\/span> [<\/span>5<\/span>,<\/span> 8<\/span>,<\/span> 10<\/span>]<\/span>\r\n<\/code><\/pre>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\u5982\u679c\u4ece\u8fd9\u91cc\u5f00\u59cb\u5220\u96645\u4e2a\u8282\u70b9…<\/p>\n
1<\/span> [<\/span>1<\/span>,<\/span> 12<\/span>,<\/span> 14<\/span>]<\/span>\r\n2<\/span> [<\/span>2<\/span>,<\/span> 13<\/span>,<\/span> 16<\/span>]<\/span>\r\n3<\/span> [<\/span>3<\/span>,<\/span> 5<\/span>,<\/span> 8<\/span>,<\/span> 10<\/span>]<\/span>\r\n4<\/span> [<\/span>4<\/span>,<\/span> 6<\/span>,<\/span> 7<\/span>,<\/span> 9<\/span>,<\/span> 11<\/span>,<\/span> 15<\/span>,<\/span> 17<\/span>,<\/span> 18<\/span>,<\/span> 19<\/span>,<\/span> 20<\/span>]<\/span>\r\n<\/code><\/pre>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\u53e6\u5916\uff0c\u5982\u679c\u6dfb\u52a0\u8282\u70b96…<\/p>\n
1<\/span> [<\/span>1<\/span>,<\/span> 12<\/span>,<\/span> 14<\/span>]<\/span>\r\n2<\/span> [<\/span>2<\/span>,<\/span> 13<\/span>,<\/span> 16<\/span>]<\/span>\r\n3<\/span> [<\/span>3<\/span>]<\/span>\r\n4<\/span> [<\/span>4<\/span>,<\/span> 7<\/span>,<\/span> 9<\/span>,<\/span> 11<\/span>,<\/span> 15<\/span>,<\/span> 17<\/span>,<\/span> 18<\/span>,<\/span> 19<\/span>,<\/span> 20<\/span>]<\/span>\r\n5<\/span> [<\/span>5<\/span>,<\/span> 8<\/span>,<\/span> 10<\/span>]<\/span>\r\n6<\/span> [<\/span>6<\/span>]<\/span>\r\n<\/code><\/pre>\n
\"\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8<\/div>\n
\u5728\u6574\u4f53\u8282\u70b9\u6570\u8f83\u5c11\u7684\u9636\u6bb5\uff0c\u4e00\u4e2a\u7f3a\u70b9\u662f\u6bcf\u4e2a\u8282\u70b9\u4e4b\u95f4\u51fa\u73b0\u6570\u636e\u504f\u5dee\u7684\u73b0\u8c61\u3002\u56e0\u6b64\uff0c\u901a\u8fc7\u5728\u8282\u70b9\u95f4\u653e\u7f6e\u865a\u62df\u8282\u70b9\u7684\u65b9\u6cd5\u6765\u5c3d\u53ef\u80fd\u5747\u5300\u5730\u5206\u5e03\u6570\u636e\uff0c\u88ab\u5e7f\u6cdb\u91c7\u7528\u3002<\/p>\n
\u865a\u62df\u8282\u70b9<\/h1>\n
\u6211\u4f1a\u5c3d\u5feb\u6dfb\u52a0\u3002<\/p>\n
\u8bf7\u770b\uff1b\u53c2\u89c1\uff1b\u501f\u9274\uff1b\u770b\u4e00\u4e0b\uff1b\u5f15\u7528<\/h1>\n
\u5b66\u4e60\u4e00\u79cd\u79f0\u4e3a”\u4e00\u81f4\u6027\u54c8\u5e0c”\u7684\u65b9\u6cd5\uff0c\u5e76\u5c1d\u8bd5\u5b9e\u73b0\u5206\u5e03\u5f0f\u7f13\u5b58\u7cfb\u7edf.<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5 \u5982\u679c\u8981\u5c06\u591a\u4e2a\u6570\u636e\u5206\u6563\u5230\u4efb\u610f\u8282\u70b9\u4e0a\uff0c\u6709\u4e00\u79cd\u65b9\u6cd5\u662f\u5c06\u6570\u636e\u7684ID\u6216\u54c8\u5e0c\u503c\u9664\u4ee5\u4fdd\u5b58\u8282\u70b9\u7684\u603b\u6570\uff0c\u7136\u540e\u5f97\u5230 […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-50406","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4e00\u81f4\u6027\u54c8\u5e0c (Y\u012bzh\u00ecx\u00ecng H\u0101sh\u012bng) - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4e00\u81f4\u6027\u54c8\u5e0c-yizhixing-hashing\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4e00\u81f4\u6027\u54c8\u5e0c (Y\u012bzh\u00ecx\u00ecng H\u0101sh\u012bng)\" \/>\n<meta property=\"og:description\" content=\"\u4e00\u81f4\u6027\u54c8\u5e0c\u7b97\u6cd5 \u5982\u679c\u8981\u5c06\u591a\u4e2a\u6570\u636e\u5206\u6563\u5230\u4efb\u610f\u8282\u70b9\u4e0a\uff0c\u6709\u4e00\u79cd\u65b9\u6cd5\u662f\u5c06\u6570\u636e\u7684ID\u6216\u54c8\u5e0c\u503c\u9664\u4ee5\u4fdd\u5b58\u8282\u70b9\u7684\u603b\u6570\uff0c\u7136\u540e\u5f97\u5230 […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4e00\u81f4\u6027\u54c8\u5e0c-yizhixing-hashing\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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