{"id":207693,"date":"2025-07-08T09:50:51","date_gmt":"2025-07-08T01:50:51","guid":{"rendered":"https:\/\/server.hk\/cnblog\/207693\/"},"modified":"2025-07-08T09:50:51","modified_gmt":"2025-07-08T01:50:51","slug":"golang-msgpck-%e8%87%aa%e5%ae%9a%e4%b9%89%e8%a1%8c%e5%86%9b","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/207693\/","title":{"rendered":"golang msgpck \u81ea\u5b9a\u4e49\u884c\u519b"},"content":{"rendered":"

<\/b> <\/p>\n

\u5f53\u524d\u4f4d\u7f6e\uff1a ><\/span> ><\/span> ><\/span> ><\/span> golang msgpck \u81ea\u5b9a\u4e49\u884c\u519b<\/span><\/p>\n

\u6765\u6e90\uff1astackoverflow<\/span>
\n2024-04-24 18:21:34<\/span>
\n<\/i>0\u6d4f\u89c8<\/span>
\n<\/i>\u6536\u85cf<\/span> <\/p>\n

\u672c\u7bc7\u6587\u7ae0\u4e3b\u8981\u662f\u7ed3\u5408\u6211\u4e4b\u524d\u9762\u8bd5\u7684\u5404\u79cd\u7ecf\u5386\u548c\u5b9e\u6218\u5f00\u53d1\u4e2d\u9047\u5230\u7684\u95ee\u9898\u89e3\u51b3\u7ecf\u9a8c\u6574\u7406\u7684\uff0c\u5e0c\u671b\u8fd9\u7bc7\u300agolang msgpck \u81ea\u5b9a\u4e49\u884c\u519b\u300b\u5bf9\u4f60\u6709\u5f88\u5927\u5e2e\u52a9\uff01\u6b22\u8fce\u6536\u85cf\uff0c\u5206\u4eab\u7ed9\u66f4\u591a\u7684\u9700\u8981\u7684\u670b\u53cb\u5b66\u4e60~<\/p>\n

\u95ee\u9898\u5185\u5bb9
\n <\/p>\n

\u6211\u6b63\u5728\u5f00\u53d1\u4e00\u4e2a\u4f7f\u7528 msgpack \u7684 golang \u9879\u76ee\u3002\u4ee3\u7801\u4e2d\u5b58\u5728\u4ee5\u4e0b\u6ce8\u91ca<\/p>\n

\/\/ we use a fast path for hot structs.<\/pre>\n
\u5728\u6b64\u4e4b\u4e0b\uff0c\u67d0\u4e9b\u7ed3\u6784\u5b9e\u73b0\u4e86\u81ea\u5df1\u7684 marshall \u65b9\u6cd5\uff0c\u5e76\u4e14\u5177\u6709\u7c7b\u4f3c\u4e8e\u4ee5\u4e0b\u5185\u5bb9\u7684\u4ee3\u7801<\/p>\n
func (z *struct) MarshalMsg(b []byte) (o []byte, err error) {\n    o = msgp.Require(b, z.Msgsize())\n\n    \/\/ string \"Field1\"\n    o = append(o, 0x88, 0xa6, 0x54, 0x65, 0x61, 0x6d, 0x49, 0x64)\n\n    o = msgp.AppendString(o, z.Field1)\n\n    \/\/ string \"Field2\"\n    o = append(o, 0xa6, 0x55, 0x73, 0x65, 0x72, 0x49, 0x64)\n    o = msgp.AppendString(o, z.Field2)\n\n    \/\/ string \"Field3\"\n    o = append(o, 0xa5, 0x52, 0x6f, 0x6c, 0x65, 0x73)\n    o = msgp.AppendString(o, z.Field3)\n    return\n}<\/pre>\n
\u6211\u4e0d\u786e\u5b9a\u8fd9\u6bb5\u4ee3\u7801\u5230\u5e95\u662f\u505a\u4ec0\u4e48\u7684\uff0c+ hot structs<\/code> \u662f\u4ec0\u4e48\u610f\u601d\uff0c\u6211\u5047\u8bbe\u5b83\u662f\u81ea\u5b9a\u4e49\u7f16\u7ec4\uff1f\u53e6\u5916  \u884c\u8ffd\u52a0(o, 0xa5, 0x52, 0x6f, 0x6c, 0x65, 0x73)<\/code> \u505a\u4ec0\u4e48\uff1f<\/p>\n
 <\/p>\n
\u89e3\u51b3\u65b9\u6848<\/h2>\n
 <\/p>\n
\u4ee3\u7801\u5177\u4f53\u7b54\u6848<\/h1>\n
\u9996\u5148\uff0c\u60a8\u7684\u4ee3\u7801\u662f\u7531 messagepack \u81ea\u52a8\u751f\u6210\u7684\uff0c\u4e0d\u5e94\u8fdb\u884c\u7f16\u8f91\u3002<\/p>\n
\u6240\u6709 apend(o, ...)<\/code> \u51fd\u6570\u90fd\u5c06\u5341\u516d\u8fdb\u5236\u7f16\u7801\u5b57\u8282\u6dfb\u52a0\u5230\u5b57\u8282\u6570\u7ec4\u4e2d\u3002\u6bcf\u4e2a\u8ffd\u52a0\u90fd\u9488\u5bf9\u7ed3\u6784\u4e2d\u7684\u4e00\u4e2a\u5b57\u6bb5\uff0c\u5176\u7ed9\u5b9a\u6807\u7b7e\u7684\u5f62\u5f0f\u4e3a<\/p>\n
type test struct {\n    bar string `msg:\"bar\"`\n}\n<\/pre>\n
\u4f8b\u5982\u201cfield3\u201d\u9644\u52a0\u51fd\u6570\u3002\u5982\u679c\u5c06\u5176\u6253\u5370\u4e3a\u5b57\u7b26\u4e32\uff0c\u7ed3\u679c\u5982\u4e0b\uff1a\ufffdroles<\/code><\/p>\n
\u8fd9\u662f\u6211\u7684\u4ee3\u7801\uff1a<\/p>\n
var b = []byte{}\nb = append(b, 0xa5, 0x52, 0x6f, 0x6c, 0x65, 0x73)\nfmt.Println(string(b))\n<\/pre>\n
\u5bf9\u4e8e\u7b2c\u4e8c\u4e2a\u5b57\u6bb5\uff1a\ufffduserid<\/code><\/p>\n
\u7b2c\u4e00\u4e2a\u5b57\u6bb5\uff1a\ufffd\ufffdteamid<\/code><\/p>\n
\u7b2c\u4e00\u4e2a\u51fd\u6570 msgp. \u8981\u6c42 <\/code> \u5b57\u8282\u6570\u7ec4\u7684\u5bb9\u91cf – \u6570\u7ec4\u7684\u957f\u5ea6\u5927\u4e8e\u6216\u7b49\u4e8e\u7ed3\u6784\u4e2d\u5b9a\u4e49\u7684\u67d0\u4e2a\u6d88\u606f\u5927\u5c0f\u5b57\u6bb5\u3002 \u8bf7\u53c2\u9605\u6587\u6863 \u3002<\/p>\n
#msgp \u5305 \u8be5\u5305\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4ee3\u7801\u751f\u6210\u5668\uff0c\u5b83\u4e3a messagepack \u751f\u6210\u5e8f\u5217\u5316\u65b9\u6cd5\u3002 \uff08\uff09<\/p>\n
\u6211\u5f3a\u70c8\u5efa\u8bae\u9605\u8bfb wiki \u548c\u5165\u95e8\u90e8\u5206\u3002 ()<\/p>\n
\u7406\u8bba\u8981\u638c\u63e1\uff0c\u5b9e\u64cd\u4e0d\u80fd\u843d\uff01\u4ee5\u4e0a\u5173\u4e8e\u300agolang msgpck \u81ea\u5b9a\u4e49\u884c\u519b\u300b\u7684\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5927\u5bb6\u90fd\u638c\u63e1\u4e86\u5427\uff01\u5982\u679c\u60f3\u8981\u7ee7\u7eed\u63d0\u5347\u81ea\u5df1\u7684\u80fd\u529b\uff0c\u90a3\u4e48\u5c31\u6765\u5173\u6ce8\u516c\u4f17\u53f7\u5427\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u5f53\u524d\u4f4d\u7f6e\uff1a > > ...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4925],"tags":[],"class_list":["post-207693","post","type-post","status-publish","format-standard","hentry","category-4925"],"_links":{"self":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207693","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=207693"}],"version-history":[{"count":0,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/posts\/207693\/revisions"}],"wp:attachment":[{"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/media?parent=207693"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/categories?post=207693"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/server.hk\/cnblog\/wp-json\/wp\/v2\/tags?post=207693"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}