{"id":124759,"date":"2024-10-25T16:55:21","date_gmt":"2024-10-25T08:55:21","guid":{"rendered":"https:\/\/server.hk\/cnblog\/124759\/"},"modified":"2024-10-25T16:55:22","modified_gmt":"2024-10-25T08:55:22","slug":"redis-%e6%8a%80%e8%a1%93%e9%9d%a9%e6%96%b0%e6%80%a7%e7%9a%84-crc-%e6%a7%bd%e4%bd%8d%e7%ae%97%e6%b3%95","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/124759\/","title":{"rendered":"Redis \u6280\u8853\u9769\u65b0\u6027\u7684 CRC \u69fd\u4f4d\u7b97\u6cd5"},"content":{"rendered":"<h1 id=\"redis-%e6%8a%80%e8%a1%93%e9%9d%a9%e6%96%b0%e6%80%a7%e7%9a%84-crc-%e6%a7%bd%e4%bd%8d%e7%ae%97%e6%b3%95-XBPpYADPni\">Redis \u6280\u8853\u9769\u65b0\u6027\u7684 CRC \u69fd\u4f4d\u7b97\u6cd5<\/h1>\n<p>\u5728\u7576\u4eca\u7684\u6578\u64da\u8655\u7406\u548c\u5b58\u5132\u9818\u57df\uff0cRedis \u4f5c\u70ba\u4e00\u500b\u9ad8\u6548\u7684\u9375\u503c\u6578\u64da\u5eab\uff0c\u5df2\u7d93\u6210\u70ba\u8a31\u591a\u61c9\u7528\u7a0b\u5e8f\u7684\u9996\u9078\u3002\u5176\u6027\u80fd\u548c\u9748\u6d3b\u6027\u4f7f\u5176\u5728\u5404\u7a2e\u5834\u666f\u4e2d\u90fd\u80fd\u767c\u63ee\u91cd\u8981\u4f5c\u7528\u3002\u672c\u6587\u5c07\u6df1\u5165\u63a2\u8a0e Redis \u4e2d\u7684 CRC \u69fd\u4f4d\u7b97\u6cd5\uff0c\u4e26\u5206\u6790\u5176\u6280\u8853\u9769\u65b0\u6027\u53ca\u61c9\u7528\u3002<\/p>\n<h2 id=\"%e4%bb%80%e9%ba%bc%e6%98%af-crc-%e6%a7%bd%e4%bd%8d%e7%ae%97%e6%b3%95%ef%bc%9f-XBPpYADPni\">\u4ec0\u9ebc\u662f CRC \u69fd\u4f4d\u7b97\u6cd5\uff1f<\/h2>\n<p>CRC\uff08Cyclic Redundancy Check\uff09\u662f\u4e00\u7a2e\u7528\u65bc\u6aa2\u6e2c\u6578\u64da\u932f\u8aa4\u7684\u7b97\u6cd5\u3002\u5b83\u901a\u904e\u751f\u6210\u4e00\u500b\u56fa\u5b9a\u9577\u5ea6\u7684\u6821\u9a57\u78bc\u4f86\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002\u5728 Redis \u4e2d\uff0cCRC \u69fd\u4f4d\u7b97\u6cd5\u4e3b\u8981\u7528\u65bc\u54c8\u5e0c\u8868\u7684\u5be6\u73fe\uff0c\u5e6b\u52a9 Redis \u66f4\u9ad8\u6548\u5730\u5b58\u5132\u548c\u6aa2\u7d22\u6578\u64da\u3002<\/p>\n<h2 id=\"redis-%e4%b8%ad%e7%9a%84%e5%93%88%e5%b8%8c%e8%a1%a8%e7%b5%90%e6%a7%8b-XBPpYADPni\">Redis \u4e2d\u7684\u54c8\u5e0c\u8868\u7d50\u69cb<\/h2>\n<p>Redis \u7684\u54c8\u5e0c\u8868\u662f\u4e00\u7a2e\u9375\u503c\u5c0d\u7684\u6578\u64da\u7d50\u69cb\uff0c\u5141\u8a31\u7528\u6236\u4ee5 O(1) \u7684\u6642\u9593\u8907\u96dc\u5ea6\u9032\u884c\u63d2\u5165\u3001\u522a\u9664\u548c\u67e5\u8a62\u64cd\u4f5c\u3002\u9019\u4f7f\u5f97 Redis \u5728\u8655\u7406\u5927\u91cf\u6578\u64da\u6642\uff0c\u80fd\u5920\u4fdd\u6301\u9ad8\u6548\u7684\u6027\u80fd\u3002\u54c8\u5e0c\u8868\u7684\u8a2d\u8a08\u4e2d\uff0cCRC \u69fd\u4f4d\u7b97\u6cd5\u7684\u5f15\u5165\u9032\u4e00\u6b65\u63d0\u5347\u4e86\u5176\u6027\u80fd\u548c\u7a69\u5b9a\u6027\u3002<\/p>\n<h3 id=\"crc-%e6%a7%bd%e4%bd%8d%e7%ae%97%e6%b3%95%e7%9a%84%e5%b7%a5%e4%bd%9c%e5%8e%9f%e7%90%86-XBPpYADPni\">CRC \u69fd\u4f4d\u7b97\u6cd5\u7684\u5de5\u4f5c\u539f\u7406<\/h3>\n<p>CRC \u69fd\u4f4d\u7b97\u6cd5\u7684\u6838\u5fc3\u5728\u65bc\u5176\u8a08\u7b97\u6821\u9a57\u78bc\u7684\u65b9\u5f0f\u3002\u7576 Redis \u5c07\u6578\u64da\u5b58\u5132\u5230\u54c8\u5e0c\u8868\u4e2d\u6642\uff0c\u5b83\u6703\u6839\u64da\u9375\u7684\u5167\u5bb9\u8a08\u7b97\u51fa\u4e00\u500b CRC \u503c\uff0c\u7136\u5f8c\u5c07\u9019\u500b\u503c\u7528\u4f5c\u6578\u64da\u7684\u7d22\u5f15\u3002\u9019\u6a23\uff0c\u7576\u9700\u8981\u6aa2\u7d22\u6578\u64da\u6642\uff0cRedis \u53ef\u4ee5\u5feb\u901f\u5b9a\u4f4d\u5230\u76f8\u61c9\u7684\u69fd\u4f4d\uff0c\u5f9e\u800c\u63d0\u9ad8\u67e5\u8a62\u6548\u7387\u3002<\/p>\n<pre><code>\nfunction crc32($data) {\n    return sprintf(\"%u\", crc32($data));\n}\n<\/code><\/pre>\n<p>\u4e0a\u8ff0\u4ee3\u78bc\u793a\u7bc4\u4e86\u5982\u4f55\u8a08\u7b97\u4e00\u500b\u5b57\u7b26\u4e32\u7684 CRC32 \u503c\uff0c\u9019\u500b\u503c\u53ef\u4ee5\u7528\u4f5c Redis \u54c8\u5e0c\u8868\u4e2d\u7684\u7d22\u5f15\u3002<\/p>\n<h2 id=\"crc-%e6%a7%bd%e4%bd%8d%e7%ae%97%e6%b3%95%e7%9a%84%e5%84%aa%e5%8b%a2-XBPpYADPni\">CRC \u69fd\u4f4d\u7b97\u6cd5\u7684\u512a\u52e2<\/h2>\n<ul>\n<li><strong>\u9ad8\u6548\u6027\uff1a<\/strong>CRC \u69fd\u4f4d\u7b97\u6cd5\u80fd\u5920\u5feb\u901f\u8a08\u7b97\u6821\u9a57\u78bc\uff0c\u5f9e\u800c\u52a0\u5feb\u6578\u64da\u7684\u5b58\u53d6\u901f\u5ea6\u3002<\/li>\n<li><strong>\u932f\u8aa4\u6aa2\u6e2c\uff1a<\/strong>\u901a\u904e CRC \u503c\uff0cRedis \u80fd\u5920\u6aa2\u6e2c\u6578\u64da\u5728\u50b3\u8f38\u904e\u7a0b\u4e2d\u662f\u5426\u767c\u751f\u4e86\u932f\u8aa4\uff0c\u78ba\u4fdd\u6578\u64da\u7684\u5b8c\u6574\u6027\u3002<\/li>\n<li><strong>\u64f4\u5c55\u6027\uff1a<\/strong>\u96a8\u8457\u6578\u64da\u91cf\u7684\u589e\u52a0\uff0cCRC \u69fd\u4f4d\u7b97\u6cd5\u80fd\u5920\u6709\u6548\u5730\u7ba1\u7406\u54c8\u5e0c\u8868\u7684\u5927\u5c0f\uff0c\u907f\u514d\u6027\u80fd\u4e0b\u964d\u3002<\/li>\n<\/ul>\n<h2 id=\"%e5%af%a6%e9%9a%9b%e6%87%89%e7%94%a8%e6%a1%88%e4%be%8b-XBPpYADPni\">\u5be6\u969b\u61c9\u7528\u6848\u4f8b<\/h2>\n<p>\u5728\u8a31\u591a\u5927\u578b\u61c9\u7528\u4e2d\uff0cRedis \u7684 CRC \u69fd\u4f4d\u7b97\u6cd5\u88ab\u5ee3\u6cdb\u61c9\u7528\u3002\u4f8b\u5982\uff0c\u5728\u793e\u4ea4\u5a92\u9ad4\u5e73\u53f0\u4e2d\uff0c\u4f7f\u7528 Redis \u5b58\u5132\u7528\u6236\u8cc7\u6599\u548c\u6d88\u606f\u6642\uff0cCRC \u69fd\u4f4d\u7b97\u6cd5\u80fd\u5920\u78ba\u4fdd\u7528\u6236\u6578\u64da\u7684\u5feb\u901f\u6aa2\u7d22\u548c\u9ad8\u6548\u5b58\u53d6\u3002\u6b64\u5916\uff0c\u8a31\u591a\u96fb\u5b50\u5546\u52d9\u7db2\u7ad9\u4e5f\u5229\u7528 Redis \u4f86\u7ba1\u7406\u5546\u54c1\u5eab\u5b58\uff0cCRC \u69fd\u4f4d\u7b97\u6cd5\u7684\u5f15\u5165\u4f7f\u5f97\u5eab\u5b58\u67e5\u8a62\u8b8a\u5f97\u66f4\u52a0\u8fc5\u901f\u3002<\/p>\n<h2 id=\"%e7%b5%90%e8%ab%96-XBPpYADPni\">\u7d50\u8ad6<\/h2>\n<p>Redis \u4e2d\u7684 CRC \u69fd\u4f4d\u7b97\u6cd5\u4e0d\u50c5\u63d0\u5347\u4e86\u6578\u64da\u5b58\u53d6\u7684\u6548\u7387\uff0c\u9084\u589e\u5f37\u4e86\u6578\u64da\u7684\u5b8c\u6574\u6027\u6aa2\u6e2c\u80fd\u529b\u3002\u96a8\u8457\u6578\u64da\u91cf\u7684\u6301\u7e8c\u589e\u9577\uff0c\u9019\u4e00\u6280\u8853\u7684\u61c9\u7528\u5c07\u8b8a\u5f97\u6108\u52a0\u91cd\u8981\u3002\u5c0d\u65bc\u5e0c\u671b\u5728\u9ad8\u6027\u80fd\u74b0\u5883\u4e2d\u904b\u884c\u7684\u61c9\u7528\u7a0b\u5e8f\u4f86\u8aaa\uff0c\u7406\u89e3\u548c\u5229\u7528 Redis \u7684 CRC \u69fd\u4f4d\u7b97\u6cd5\u5c07\u662f\u81f3\u95dc\u91cd\u8981\u7684\u3002<\/p>\n<p>\u5982\u9700\u4e86\u89e3\u66f4\u591a\u6709\u95dc <a href=\"https:\/\/server.hk\">\u9999\u6e2f VPS<\/a> \u548c\u5176\u4ed6\u4f3a\u670d\u5668\u89e3\u6c7a\u65b9\u6848\u7684\u4fe1\u606f\uff0c\u8acb\u8a2a\u554f\u6211\u5011\u7684\u7db2\u7ad9\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u63a2\u7d22 Redis \u7684 CRC \u69fd\u4f4d\u7b97\u6cd5\uff0c\u4e86\u89e3\u5176\u6280\u8853\u9769\u65b0\u5982\u4f55\u63d0\u5347\u6578\u64da\u5b58\u53d6\u6548\u7387\u8207\u6027\u80fd\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-124759","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/124759","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=124759"}],"version-history":[{"count":1,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/124759\/revisions"}],"predecessor-version":[{"id":124760,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/124759\/revisions\/124760"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=124759"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=124759"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=124759"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}