1M = 1024k
\n1K = 1024bit
\n1bit = 8\u4f4d
\n\u4e00\u4e2a\u6574\u6570\u536032\u4f4d(4bit)\uff0c\u90a3\u4e481M\u5171\u53ef\u5b58\u653e\u7684\u6574\u6570\u4e2a\u6570\u4e3a\uff1a1024*1024\/4=262144\u4e2a<\/p>\n
\u9898\u76ee\uff1a\u4e00\u4e2a\u6700\u591a\u5305\u542bn\u4e2a\u6b63\u6574\u6570\u7684\u6587\u4ef6\uff0c\u6bcf\u4e2a\u6570\u90fd\u5c0f\u4e8en\uff0c\u5176\u4e2dn=10^7,\u4e14\u6240\u6709\u6b63\u6574\u6570\u90fd\u4e0d\u91cd\u590d\u3002\u6c42\u5982\u4f55\u5c06\u8fd9n\u4e2a\u6b63\u6574\u6570\u5347\u5e8f\u6392\u5217\u3002
\n\u7ea6\u675f\uff1a\u6700\u591a\u67091MB\u7684\u5185\u5b58\u7a7a\u95f4\u53ef\u7528\uff0c\u6709\u5145\u8db3\u7684\u78c1\u76d8\u5b58\u50a8\u7a7a\u95f4\u3002
\n\u76f4\u63a5\u8bfb\u53d6\u6240\u6709\u6587\u4ef6\u5165\u5185\u5b58\u8fdb\u884c\u6392\u5e8f\u662f\u4e0d\u73b0\u5b9e\u7684\uff0c\u56e0\u4e3a\u6700\u591a\u67091MB\u7a7a\u95f4\uff0c\u6700\u5927\u53ef\u5b58\u653e\u7684\u6570\u5b57\u662f262144\u4e2a
\n\uff0c\u53ef\u4ee5\u5206\u6bb5\u53d6\uff1a\u4ece\u5934\u5230\u5c3e\u4e00\u6bb5\u4e00\u6bb5\u7684\u53d6\u6570\u636e\uff0c\u57280-250000\u7684\u653e\u5165\u5185\u5b58\u5e76\u6392\u5e8f\u8f93\u51fa
\n \u4ece\u5934\u5230\u5c3e\u4e00\u6bb5\u4e00\u6bb5\u7684\u53d6\u6570\u636e\uff0c \u5728250000-500000\u7684\u653e\u5165\u5185\u5b58\u5e76\u8f93\u51fa
\n \u4ece\u5934\u5230\u5c3e\u4e00\u6bb5\u4e00\u6bb5\u7684\u53d6\u6570\u636e\uff0c \u5728500000-750000\u7684\u653e\u5165\u5185\u5b58\u5e76\u8f93\u51fa
\n \u4ece\u5934\u5230\u5c3e\u4e00\u6bb5\u4e00\u6bb5\u7684\u53d6\u6570\u636e\uff0c \u5728750000-1000000\u7684\u653e\u5165\u5185\u5b58\u5e76\u8f93\u51fa<\/p>\n
\u4f4d\u56fe\u6cd5\u6392\u5e8f:hash\u5bf9\u5e94
\n\u5b9a\u4e49\u4e00\u5b57\u7b26\u4e32\uff0c\u957f\u5ea6\u4e3a10^7,\u521d\u59cb\u6bcf\u4f4d\u4e3a0\uff0c\u6bcf\u4f4d\u7684\u987a\u5e8f\u5bf9\u5e94\u6bcf\u4e2a\u6570\u5b57\uff0c\u5206\u6bb5\u8bfb\u5165\u6570\u5b57\uff0c\u5c06\u5bf9\u5e94\u4f4d\u8bbe\u7f6e\u4e3a1\uff0c
\n\u5982\uff1a\u5bf9\u4e8e\u6570\u5b573\uff0c\u5c06\u6b64\u5b57\u7b26\u4e32\u7684\u7b2c\u4e09\u4f4d\u8bbe\u7f6e\u4e3a1\u5373\u53ef\u3002
\n\u7136\u540e\u8f93\u51fa\u4e3a1\u7684\u4f4d\u6570\u5373\u53ef\uff0c\u4e0d\u9700\u6392\u5e8f\u3002
\n\u4e0e\u4e0a\u8fb9\u7684\u65b9\u6cd5\u76f8\u6bd4\uff0c\u4e0a\u8fb9\u7684\u65b9\u6cd5\u898140\u6b21\u5168\u6587\u4ef6\u626b\u63cf\uff0c\u800c\u6b64\u65b9\u6cd5\u4ec5\u9700\u4e00\u6b21\uff0c\u5e76\u7528\u7ed3\u679c\u4e0d\u7528\u6392\u5e8f
\n\u4ee5\u7a7a\u95f4\u6362\u65f6\u95f4\u3002<\/p>\n
\u5e94\u7528\u8303\u56f4\uff1a1\uff0c\u77e5\u9053\u4e0a\u9650\u30022\uff0c\u6570\u5b57\u6ca1\u6709\u91cd\u590d<\/p>\n
\u63a8\u5e7f\uff1a
\n\u7ed940\u4ebf\u4e2a\u4e0d\u91cd\u590d\u7684unsigned int\u7684\u6574\u6570\uff0c\u6ca1\u6392\u8fc7\u5e8f\u7684\uff0c\u7136\u540e\u518d\u7ed9\u4e00\u4e2a\u6570\uff0c\u5982\u4f55\u5feb\u901f\u5224\u65ad\u8fd9\u4e2a\u6570\u662f\u5426\u5728\u90a340\u4ebf\u4e2a\u6570\u5f53\u4e2d
\nunsign int\u8303\u56f4\u4e3a0~2^32-1(4294967295\u22485*10^9) \u4f7f\u7528\u4f4d\u56fehash\u5bf9\u5e945*10^9\/8\/10^3\/10^3 = 625MB.<\/p>\n
1. \u6211\u4eec\u4f7f\u7528625M\u7684\u5b57\u7b26\u4e32\u3002\u6bcf\u4e00\u4f4d\u8bbe\u7f6e\u4e3a0.
\n 2. \u5c0640\u4ebf\u4e2aunsign int \u904d\u5386\u4e00\u904d\u3002\u4f7f\u7528\u4f4d\u56fe\u6cd5\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u5bf9\u5e94\u4f4d\u8f6c\u5316\u4e3a1\u3002
\n 3. \u8bfb\u53d6\u201c\u518d\u7ed9\u4e00\u4e2a\u6570i\u201d \u67e5\u770bbit[i] \u662f\u5426\u4e3a1\uff0c1\u5219\u6709\u5b58\u5728\uff0c0\u5219\u4e0d\u5b58\u5728\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
1M = 1024k 1K = 1024bit 1bit = 8\u4f4d \u4e00\u4e2a\u6574\u6570\u536032\u4f4d(4bit)\uff0c\u90a3\u4e481M\u5171\u53ef […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15],"tags":[],"class_list":["post-1297","post","type-post","status-publish","format-standard","hentry","category-15"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts\/1297","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/comments?post=1297"}],"version-history":[{"count":0,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/posts\/1297\/revisions"}],"wp:attachment":[{"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/media?parent=1297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/categories?post=1297"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/enjoyasp.net\/index.php\/wp-json\/wp\/v2\/tags?post=1297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}