{"id":201282,"date":"2025-05-10T11:17:47","date_gmt":"2025-05-10T03:17:47","guid":{"rendered":"https:\/\/server.hk\/cnblog\/201282\/"},"modified":"2025-05-10T11:17:47","modified_gmt":"2025-05-10T03:17:47","slug":"redis%e5%ad%97%e7%ac%a6%e4%b8%b2%e7%b1%bb%e5%9e%8b_%e5%8a%a8%e5%8a%9b%e8%8a%82%e7%82%b9java%e5%ad%a6%e9%99%a2%e6%95%b4%e7%90%86","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/201282\/","title":{"rendered":"redis\u5b57\u7b26\u4e32\u7c7b\u578b_\u52a8\u529b\u8282\u70b9Java\u5b66\u9662\u6574\u7406"},"content":{"rendered":"<p><b><\/b> <\/p>\n<h1>redis\u5b57\u7b26\u4e32\u7c7b\u578b_\u52a8\u529b\u8282\u70b9Java\u5b66\u9662\u6574\u7406<\/h1>\n<p><span style=\"cursor: pointer\"><i><\/i>\u6536\u85cf<\/span> <\/p>\n<p>\u600e\u4e48\u5165\u95e8\u6570\u636e\u5e93\u7f16\u7a0b\uff1f\u9700\u8981\u5b66\u4e60\u54ea\u4e9b\u77e5\u8bc6\u70b9\uff1f\u8fd9\u662f\u65b0\u624b\u4eec\u521a\u63a5\u89e6\u7f16\u7a0b\u65f6\u5e38\u89c1\u7684\u95ee\u9898\uff1b\u4e0b\u9762golang\u5b66\u4e60\u7f51\u5c31\u6765\u7ed9\u5927\u5bb6\u6574\u7406\u5206\u4eab\u4e00\u4e9b\u77e5\u8bc6\u70b9\uff0c\u5e0c\u671b\u80fd\u591f\u7ed9\u521d\u5b66\u8005\u4e00\u4e9b\u5e2e\u52a9\u3002\u672c\u7bc7\u6587\u7ae0\u5c31\u6765\u4ecb\u7ecd\u300aredis\u5b57\u7b26\u4e32\u7c7b\u578b_\u52a8\u529b\u8282\u70b9Java\u5b66\u9662\u6574\u7406\u300b\uff0c\u6d89\u53ca\u5230redis\u5b57\u7b26\u4e32\u7c7b\u578b\uff0c\u6709\u9700\u8981\u7684\u53ef\u4ee5\u6536\u85cf\u4e00\u4e0b<\/p>\n<p>\u6211\u4eec\u90fd\u77e5\u9053redis\u662f\u91c7\u7528C\u8bed\u8a00\u5f00\u53d1\uff0c\u90a3\u4e48\u5728C\u8bed\u8a00\u4e2d\u8868\u793astring\u90fd\u662f\u91c7\u7528char[]\u6570\u7ec4\u7684\uff0c\u7136\u540e\u4f60\u53ef\u80fd\u4f1a\u60f3\uff0c\u90a3\u8fd8\u4e0d\u7b80\u5355\uff0c\u5f53\u6211\u6267\u884c\u5982\u4e0b\u547d\u4ee4\uff0c\u80af\u5b9a\u662f\u76f4\u63a5\u585e\u7ed9char[]\u6570\u7ec4\u7684\u3002<\/p>\n<p style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230101\/167255552763b12c07cfd68.png\" class=\"aligncenter\"><\/p>\n<p>\u5982\u679c\u4f60\u771f\u7684\u8fd9\u4e48\u60f3\u7684\u8bdd\uff0c\u4f1a\u6709\u51e0\u4e2a\u95ee\u9898\u5c31\u8981\u8fc7\u6765\u780d\u4f60\u4e86\uff0c\u5148\u6211\u4eec\u6765\u627e\u4e00\u4e2aredis\u624b\u518c\uff0chttp:\/\/doc.redisfans.com\/<\/p>\n<p style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230101\/167255552863b12c0825c94.png\" class=\"aligncenter\"><\/p>\n<p>\u7b2c\u4e00\uff1a\u5982\u679c\u4f60\u6bcf\u6b21\u90fd\u6267\u884cAppend\u51fd\u6570\uff0c\u90a3\u662f\u4e0d\u662fredis\u7684char[]\u6bcf\u6b21\u90fd\u9700\u8981\u518d\u6b21\u6269\u5bb9\uff0c\u8fd9\u6837\u662f\u4e0d\u662f\u6bcf\u6b21\u90fd\u662f\u8017\u65f6\u64cd\u4f5c\u5462\uff1f<\/p>\n<p>\u7b2c\u4e8c\uff1a\u5982\u679c\u4f60\u6bcf\u6b21\u6267\u884cString\u4e2d\u7684StrLen\uff0c\u90a3redis\u5e95\u5c42\u662f\u4e0d\u662f\u6bcf\u6b21\u90fd\u8981\u904d\u5386char\u6570\u7ec4\u6765\u5f97\u5230\u7ed3\u679c\u5462\uff1f<\/p>\n<p><strong>\u4e00\u3001 \u63a2\u7d22Redis\u4e2d\u7684String\u662f\u5982\u4f55\u5b58\u50a8\u7684\u3000<\/strong>\u3000<\/p>\n<p>\u6839\u636e\u4e0a\u9762\u8bf4\u7684\u90a3\u4e9b\u5c0f\u60c5\u51b5\uff0c\u6240\u4ee5redis\u7684\u4f5c\u8005\u6ca1\u6709\u90a3\u4e48\u50bb\uff0c\u6b63\u5e38\u7684\u903b\u8f91\u5e94\u8be5\u662f\u5728char[]\u6570\u7ec4\u7684\u5c42\u9762\u4e0a\u81ea\u5df1\u518d\u6765\u5c01\u88c5\u4e00\u5c42\u3002<\/p>\n<p>1. SDS\u7ed3\u6784\u4f53<\/p>\n<p>\u5728redis\u91cc\u9762\u662f\u91c7\u7528SDS(simple dynamic string)\u6765\u5c01\u88c5char[]\u7684\uff0c\u8fd9\u4e2a\u4e5f\u662fredis\u5b58\u50a8\u7684\u6700\u5c0f\u5355\u5143\uff0c\u4e0b\u4e00\u4e2a\u95ee\u9898\u5c31\u662f\u54ea\u91cc\u80fd\u770b\u5f97\u5230\u5462\uff1f\u6211\u5728wget\u538b\u7f29\u5305\u7684\u65f6\u5019\uff0c\u91cc\u9762\u5c31\u6709redis\u6e90\u7801\u5566\uff0c\u636e\u8bf4\u8fd8\u53ea\u67093w\u591a\u884c\uff0c\u8fd9\u5c31\u544a\u8bc9\u6211\u4eec\uff0c\u6709\u4ec0\u4e48\u95ee\u9898\uff0c\u81ea\u5df1\u52a8\u624b\u4e30\u8863\u8db3\u98df\uff0c\u5bf9\u5427\uff0c\u4e3a\u67e5\u627e\u65b9\u4fbf\uff0c\u6211\u5c31\u628aredis\u7684\u6e90\u7801\u62d6\u5230window\u4e0a\u7528vs\u6253\u5f00\uff0c\u63a5\u4e0b\u6765\u6211\u4eec\u770b\u770bSDS\u957f\u6210\u5565\u6837\uff1f\uff1f\uff1f<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230101\/167255552863b12c0866b62.jpg?2017729103537\" class=\"aligncenter\"><\/p>\n<p>\u53ef\u4ee5\u770b\u5230\u5b83\u662f\u5b9a\u4e49\u5728redis\u6e90\u7801\u4e2d\u7684sds.h\u6e90\u6587\u4ef6\u4e2d\u7684\uff0c\u4f60\u53ef\u80fd\u4f1a\u5947\u602a\uff0c\u8fd9\u4e09\u4e2a\u5c5e\u6027\u662f\u5e72\u561b\u7528\u7684\uff1f\uff1f\uff1f\u4e0b\u9762\u6211\u7b80\u5355\u8bf4\u4e00\u4e0b\u3002<\/p>\n<p> len\uff1a \u6807\u8bb0char[]\u7684\u957f\u5ea6, \u6709\u70b9\u7c7b\u4f3c\u6211\u4eecC#\u4e2dList\u7684length\u4e00\u4e2a\u610f\u601d\u3002<\/p>\n<p> free: \u6807\u8bb0char[]\u4e2d\u672a\u4f7f\u7528\u7684\u5143\u7d20\u4e2a\u6570\uff0c\u5c31\u662f\u6709\u51e0\u4e2a\u7a7a\u5751\u7684\u610f\u601d\u3002<\/p>\n<p>buf[]:\u5b58\u653e\u5143\u7d20\u7684\u5751\uff0c\u4e0d\u4e00\u5b9a\u548c\u5143\u7d20\u7684\u5b9e\u9645\u4e2a\u6570\u76f8\u7b49\uff0c\u6bd4\u5982\u524d\u9762\u8bf4\u7684cnblogs\u3002\u4e5f\u6709\u53ef\u80fd\u662f[c][n][b][l][o][g][s][\/0][][][]\u3002<\/p>\n<p><strong>\u4e8c\u3001\u63a2\u7d22Redis\u5bf9\u8c61(RedisObject)<\/strong><\/p>\n<p>\u524d\u9762\u8bf4\u5230\u7684SDS\u4ec5\u4ec5\u662fchar[]\u6570\u7ec4\u7684\u5c01\u88c5\uff0c\u5e76\u4e0d\u80fd\u6807\u8bc6redis\u4e2d\u76845\u5927\u7c7b\u578b\uff0c\u6240\u4ee5\u53ef\u60f3\u800c\u77e5\uff0credis\u8fd8\u9700\u8981\u5728SDS\u4e0a\u9762\u8fdb\u884c\u5c01\u88c5\uff0c\u6240\u4ee5\u5c31\u6709\u4e86\u63a5\u4e0b\u6765\u7684<\/p>\n<p>RedisObject\u5bf9\u8c61\uff0c\u6211\u4eec\u5148\u770b\u770b\u5b83\u957f\u6210\u5565\u6837\u3002<\/p>\n<p style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230101\/167255552863b12c08b4901.jpg?2017729103611\" class=\"aligncenter\"><\/p>\n<p>\u53ef\u4ee5\u770b\u5230RedisObject\u662f\u5728redis.h\u6e90\u4ee3\u7801\u6587\u4ef6\u4e2d\u7684\uff0c\u4e0b\u9762\u6211\u7b80\u5355\u8bf4\u8bf4type\u548cptr\u5c5e\u6027\uff0c\u8be6\u7ec6\u7684\u4e1c\u897f\u5728\u540e\u7eed\u8bf4\u3002<\/p>\n<p> type \u8fd9\u4e2a\u5c31\u662f\u7528\u6765\u6807\u8bc6redisObject\u662f\u54ea\u79cd\u7c7b\u578b\uff0c\u65e2\u7136\u662f\u54ea\u79cd\u7c7b\u578b\uff0c\u80af\u5b9a\u5c31\u6709\u4e00\u4e2a\u7c7b\u578b\u679a\u4e3e\uff0c\u5bf9\u5427\uff0c\u80af\u5b9a\u6709\u4e86\uff0c\u7ed9\u4f60\u770b\u770b\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230101\/167255552963b12c0938117.png\" class=\"aligncenter\"><\/p>\n<p> *ptr \u53ef\u4ee5\u770b\u5230\u8fd9\u73a9\u610f\u8fd8\u662f\u4e2a\u6307\u9488\u7c7b\u578b\uff0c\u5b83\u6240\u6307\u5411\u7684\u5185\u5b58\u5730\u5740\uff0c\u4f60\u5e94\u8be5\u4e5f\u77e5\u9053\u4e86\uff0c\u5c31\u662f\u6240\u8c13\u7684SDS\u679a\u4e3e\u7c7b\u578b\u3002<\/p>\n<p>\u597d\u4e86\uff0c\u5230\u73b0\u5728\u4f60\u53ef\u4ee5\u6574\u5408\u4e00\u4e0b\u535a\u5ba2\u5f00\u59cb\u5904\u7684\uff1a<\/p>\n<pre>\n127.0.0.1:6379&gt; set name cnblogs\nOK\n127.0.0.1:6379&gt; get name\n\"cnblogs\"\n127.0.0.1:6379&gt; <\/pre>\n<p>\u9488\u5bf9\u4e0a\u9762\u7684set\u547d\u4ee4\uff0credis\u5176\u5b9e\u4f1a\u521b\u5efa\u4e24\u4e2aRedisObject\u5bf9\u8c61\uff0c\u952e\u7684RedisObject \u548c\u503c\u7684RedisOjbect\u5176\u4e2d\u5b83\u4eec\u7684type=REDIS_STRING \uff0c\u4e5f\u5c31\u90fd\u662f\u5b57\u7b26\u4e32\u5bf9\u8c61\u7c7b\u578b\uff0c\u5176\u4e2d\u7684SDS\u5206\u522b\u5b58\u50a8\u7684\u5c31\u662fname\u548ccnblogs\u7684\u5b57\u7b26\u54af\uff0c\u597d\u4e86\uff0c\u5927\u6982\u5c31\u8fd9\u6837\u4e86\u3002<\/p>\n<p><strong>\u4e09\u3001\u6311\u9009\u51e0\u4e2a\u6709\u610f\u601d\u7684\u547d\u4ee4<\/strong><\/p>\n<p>1. incr,incrby,decr,decrby<\/p>\n<p>\u8fd9\u56db\u4e2a\u547d\u4ee4\u6709\u70b9\u50cfC#\u4e2d\u7684Interlocked\u7c7b\u7684\u65b9\u6cd5\uff0c\u5982\u679c\u4f60\u4e86\u89e3Interlocked\uff0c\u4f60\u5e94\u8be5\u5c31\u77e5\u9053\u4e0b\u9762\u6709\u5404\u79cd\u539f\u5b50\u81ea\u589e\uff0c\u81ea\u51cf\u7b49\u7b49\u65b9\u6cd5\uff0c\u5982\u4e0b\u56fe\uff1a<\/p>\n<p style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230101\/167255552963b12c096d59f.jpg?2017729103637\" class=\"aligncenter\"><\/p>\n<p>redis\u8fd9\u4e2a\u81ea\u589e\u6709\u4ec0\u4e48\u597d\u5904\u5462\uff1f\u6211\u89c9\u5f97\u7528\u8fd9\u4e2a\u751f\u6210\u8ba2\u5355\u53f7\u8fd8\u662f\u86ee\u597d\u7684\uff0c\u6211\u8bb0\u5f97\u5728\u643a\u7a0b\u7684\u65f6\u5019\uff0c\u751f\u6210\u8ba2\u5355\u53f7\u662f\u4e13\u95e8\u7684\u4e00\u4e2aOrderIDDB\u4e2d\u7684func\u51fd\u6570\u6765\u751f\u6210\u7684\uff0c\u8fd9\u6837OrderID\u662f\u4e0d\u4f9d\u8d56\u4e8e\u4efb\u4f55\u4e1a\u52a1\u5e93\u7684\uff0c\u7136\u540e\u6211\u4eec\u5c31\u53ef\u4ee5\u76f8\u5bf9\u65b9\u4fbf\u7684\u5206\u5e93\u5206\u8868\u4e86\uff0c\u73b0\u5728\u7528redis\u8fd9\u6837\u505a\u4e5f\u633a\u597d\u7684\u3002<\/p>\n<p style=\"text-align: center\"><img decoding=\"async\" src=\"https:\/\/www.17golang.com\/uploads\/20230101\/167255552963b12c09b74ed.png\" class=\"aligncenter\"><\/p>\n<p>\u5176\u4ed6\u7684\u4e00\u4e9b\u547d\u4ee4\u4e5f\u6ca1\u4ec0\u4e48\u597d\u8bf4\u7684\u4e86\uff0c\u5927\u5bb6\u53ef\u4ee5\u5bf9\u7167redis\u624b\u518c\u770b\u4e00\u770b\u5c31\u597d\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>redis\u5b57\u7b26\u4e32\u7c7b\u578b_\u52a8\u529b\u8282\u70b9J&#46;&#46;&#46;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101],"tags":[],"class_list":["post-201282","post","type-post","status-publish","format-standard","hentry","category-database"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201282","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"}],"author":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/comments?post=201282"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/201282\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=201282"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=201282"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=201282"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}