\u540c\u6837\u7684zset\u7c7b\u578b\u5bf9\u8c61\u4e5f\u6709\u4e24\u79cd\u7f16\u7801\u65b9\u5f0f,\u4e00\u79cd\u662f\u538b\u7f29\u5217\u8868,\u4e00\u79cd\u662f\u8df3\u8868<\/p>\n\n\n\n
\n\n\n#define REDIS_ENCODING_ZIPLIST 5 \/* Encoded as ziplist *\/\n#define REDIS_ENCODING_SKIPLIST 7 \/* Encoded as skiplist *\/\n\n\n\/\/ \u6709\u5e8f\u96c6\u5408\u7684\u5b9a\u4e49\u7ed3\u6784\u4f53\ntypedef struct zset {\n \/\/ \u5b57\u5178\uff0c\u952e\u4e3a\u6210\u5458\uff0c\u503c\u4e3a\u5206\u503c\n \/\/ \u7528\u4e8e\u652f\u6301 O(1) \u590d\u6742\u5ea6\u7684\u6309\u6210\u5458\u53d6\u5206\u503c\u64cd\u4f5c\n dict *dict;\n \/\/ \u8df3\u8dc3\u8868\uff0c\u6309\u5206\u503c\u6392\u5e8f\u6210\u5458\n \/\/ \u7528\u4e8e\u652f\u6301\u5e73\u5747\u590d\u6742\u5ea6\u4e3a O(log N) \u7684\u6309\u5206\u503c\u5b9a\u4f4d\u6210\u5458\u64cd\u4f5c\u4ee5\u53ca\u8303\u56f4\u64cd\u4f5c\n zskiplist *zsl;\n} zset;\n\n\n\u4ee5\u4e0b\u4e3a\u4e24\u79cd\u7f16\u7801\u65b9\u5f0f\u7684zset\u5bf9\u8c61\u7684\u521b\u5efa\u65b9\u5f0f\n\n\/\/ \u521b\u5efa\u8df3\u8868\u7684\u6709\u5e8f\u96c6\u5408\nrobj *createZsetObject(void) {\n zset *zs = zmalloc(sizeof(*zs));\n robj *o;\n zs->dict = dictCreate(&zsetDictType,NULL);\n zs->zsl = zslCreate();\n o = createObject(REDIS_ZSET,zs);\n o->encoding = REDIS_ENCODING_SKIPLIST;\n return o;\n}\n\n\/\/ \u521b\u5efa\u538b\u7f29\u5217\u8868\u7684\u6709\u5e8f\u96c6\u5408\nrobj *createZsetZiplistObject(void) {\n unsigned char *zl = ziplistNew();\n robj *o = createObject(REDIS_ZSET,zl);\n o->encoding = REDIS_ENCODING_ZIPLIST;\n return o;\n}\n\n\n\n\/\/ \u4e0b\u9762\u5148\u6765\u770b\u7f16\u7801\u65b9\u5f0f\u4e3a\u8df3\u8868\u7684zset\u5bf9\u8c61\u7684\u521b\u5efa\u8fc7\u7a0b\n\n\/\/\u7b2c\u4e00\u6b65 \u521b\u5efa\u5b57\u5178,\u4e0eset\u7684\u4e0d\u540c\u662f\u4f20\u5165\u7684\u5b57\u5178\u7c7b\u578b\u4e0d\u4e00\u6837\nzs->dict = dictCreate(&zsetDictType,NULL);\n\n\n\/\/\u7b2c\u4e8c\u6b65, \u521b\u5efa\u8df3\u8868\u7ed3\u6784\n zs->zsl = zslCreate();\n\n\/\/ \u521b\u5efa\u8df3\u8dc3\u8868\nzskiplist *zslCreate(void) {\n int j;\n zskiplist *zsl;\n\n \/\/ \u5206\u914d\u7a7a\u95f4\n zsl = zmalloc(sizeof(*zsl));\n zsl->level = 1; \n zsl->length = 0;\n\n \/\/ \u521d\u59cb\u5316\u8868\u5934\u8282\u70b9\n zsl->header = zslCreateNode(ZSKIPLIST_MAXLEVEL,0,NULL);\n for (j = 0; j < ZSKIPLIST_MAXLEVEL; j++) {\n zsl->header->level[j].forward = NULL;\n zsl->header->level[j].span = 0;\n }\n zsl->header->backward = NULL;\n zsl->tail = NULL;\n return zsl;\n}\n\n\/\/\u8df3\u8868\u7684\u7ed3\u6784\u4f53\ntypedef struct zskiplist {\n struct zskiplistNode *header, *tail; \/\/ \u5934\u7ed3\u70b9\u548c\u5c3e\u8282\u70b9\n unsigned long length; \/\/ \u8868\u4e2d\u8282\u70b9\u7684\u6570\u91cf\n int level; \/\/ \u8868\u4e2d\u5c42\u6570\u6700\u5927\u7684\u8282\u70b9\u7684\u5c42\u6570\n} zskiplist;\n\n\n\/\/\u8df3\u8868\u8282\u70b9\u7684\u7ed3\u6784\u4f53\ntypedef struct zskiplistNode {\n robj *obj; \/\/ \u6210\u5458\u5bf9\u8c61\n double score; \/\/ \u5206\u503c\n struct zskiplistNode *backward; \/\/ \u540e\u9000\u6307\u9488\n struct zskiplistLevel { \/\/ \u5c42\n struct zskiplistNode *forward; \/\/ \u524d\u8fdb\u6307\u9488\n unsigned int span; \/\/ \u8de8\u5ea6\n } level[];\n} zskiplistNode;\n\n\/\/\u7b2c\u4e09\u6b65 \u521b\u5efazset\u5bf9\u8c61\n o = createObject(REDIS_ZSET,zs);\n\/\/\u7b2c\u56db\u90e8 \u8bbe\u7f6e\u7f16\u7801\u4e3aREDIS_ENCODING_SKIPLIST\n\n\n\/\/\u4e0b\u9762\u6211\u4eec\u770b\u538b\u7f29\u5217\u8868\u65b9\u5f0f\u7684\u6709\u5e8f\u96c6\u5408\n\n\/\/\u7b2c\u4e00\u6b65 \u521b\u5efa\u538b\u7f29\u5217\u8868 \u76f8\u5173\u5185\u5bb9\u5728\u5217\u8868\u5bf9\u8c61\u4e2d\u8bb2\u8fc7\u4e86\nunsigned char *zl = ziplistNew();\n\n\/\/\u7b2c\u4e8c\u6b65 \u521b\u5efazset\u5bf9\u8c61\nrobj *o = createObject(REDIS_ZSET,zl);\n\n\/\/ \u7b2c\u4e09\u6b65 \u8bbe\u7f6e\u7f16\u7801\u65b9\u5f0f\u4e3a\u538b\u7f29\u5217\u8868\no->encoding = REDIS_ENCODING_ZIPLIST;\n\n<\/code><\/pre>\n\n\n\n\u57fa\u4e8e\u7248\u672c3.0.0\u7248\u672c,<\/a>\u70b9\u51fb\u4e0b\u8f7dhttps:\/\/download.redis.io\/releases\/redis-3.0.0.tar.gz<\/p>\n\n\n\n\u672c\u6587\u5730\u5740<\/a>\uff0chttps:\/\/www.ccagml.com\/?p=420<\/p>\n","protected":false},"excerpt":{"rendered":"\u540c\u6837\u7684zset\u7c7b\u578b\u5bf9\u8c61\u4e5f\u6709\u4e24\u79cd\u7f16\u7801\u65b9\u5f0f,\u4e00\u79cd\u662f\u538b\u7f29\u5217\u8868,\u4e00\u79cd\u662f\u8df3\u8868 \u57fa\u4e8e\u7248\u672c3.0.0\u7248\u672c,\u70b9\u51fb\u4e0b\u8f7dhttpsContinue reading redis\u6e90\u7801\u4ecemain\u5f00\u59cb14<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[31,22],"tags":[],"_links":{"self":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/420"}],"collection":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=420"}],"version-history":[{"count":4,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/420\/revisions"}],"predecessor-version":[{"id":435,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=\/wp\/v2\/posts\/420\/revisions\/435"}],"wp:attachment":[{"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=420"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=420"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ccagml.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=420"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}