elasticsearch—elasticsearch中带有评论的博客文章的数据模型

oprakyz7  于 2021-06-14  发布在  ElasticSearch
关注(0)|答案(1)|浏览(332)

使用elasticsearch构建帖子/评论系统的最佳方法是什么?我正在使用elasticsearch作为辅助数据库。
会有一个带有多线程评论系统的帖子,可能有两个层次。每个帖子最多可以有500-1000条评论。将有两个喜欢和评论为每个评论和帖子增量计数器。这意味着大量的索引。另外,我想获取他们对应用过滤器的评论的博客文章。
现在,我的结构是这样的。在这种情况下,博客文章和用户详细信息很少被编辑,但是标签和评论会被频繁添加。

{
"_index": "brainstormer_ideas_with_comments",
"_type": "_doc",
"_id": "1",
"_version": 1,
"_seq_no": 0,
"_primary_term": 1,
"found": true,
"_source": {
    "id": 1,
    "brainstormer_id": 1,
    "idea": "cCZhvy",
    "description": "2jJPo3hYbqeh2VBnDJeGtylVu7qfe_MRp77hTK6t7SN57GzeQG8c",
    "user": {
        "id": "user-1",
        "login": "pO2DSqIS--"
    },
    "created_at": "2020-08-13T20:35:17+00:00",
    "like_count": 41,
    "comment_count": 45,
    "tags": [
        "bU37X",
        "a_Rl5b",
        "vxD.ZMo",
        "AmvtHVuQ",
        "yx9oSx-_D"
    ],
    "comments": [
        {
            "id": "comment-1",
            "comment": "7ewh-Cqf4gQqmIK53jXbR7",
            "tags": [
                "mJN",
                "jFm-",
                "hV0pi",
                "ONGNOw",
                "HtzmDfO",
                "dawVLk09"
            ],
            "created_at": "2020-08-08T20:35:17+00:00",
            "user": {
                "id": "user-1",
                "login": "Tl6CDNawUh"
            }
        },
        {
            "id": "comment-1",
            "comment": "BKj8sAcbJJXWxAPk3HQFTZWtvQm",
            "tags": [
                "sYj",
                "XRLw",
                "xtAeH",
                "Oq6dBR",
                "lj4_hOI",
                "n3lhc2ig"
            ],
            "created_at": "2020-09-21T20:35:17+00:00",
            "user": {
                "id": "user-2",
                "login": "AF3KT415uf"
            }
        },
        {
            "id": "comment-1",
            "comment": "vzt7XEe2WIP3OszpLmcF8J",
            "tags": [
                "YCH",
                "kodm",
                "RGv2B",
                "Qk5R1D",
                "ICrDjmz",
                "4mmfLK16"
            ],
            "created_at": "2020-07-08T20:35:17+00:00",
            "user": {
                "id": "user-3",
                "login": "7xTLOuCeWD"
            }
        },
        {
            "id": "comment-1",
            "comment": "Jm6E3PrlOI",
            "tags": [
                "IrZ",
                "TJlf",
                "__HQy",
                "5VH2Vs",
                "btvxG51",
                "5iRoVR_k"
            ],
            "created_at": "2020-07-19T20:35:17+00:00",
            "user": {
                "id": "user-4",
                "login": "zr32RlxNak"
            }
        },
        {
            "id": "comment-1",
            "comment": "jKGzoZhCpUv4DrvoebamXLnmvyX_CK0",
            "tags": [
                "Osa",
                "OKlQ",
                "cBcjt",
                "2BcQD7",
                "K7lLhS7",
                "ZK1t_GXl"
            ],
            "created_at": "2020-07-14T20:35:17+00:00",
            "user": {
                "id": "user-5",
                "login": "B8LGMpPWwv"
            }
        },
        {
            "id": "comment-1",
            "comment": "L-PryTXsa1FbEnIJdH_5vlsdpfnckB1kmMJI4EVwszhc45qlW6e",
            "tags": [
                "kRJ",
                "Mkka",
                "ari.I",
                "pgWcUk",
                "w78vFir",
                "eOx.zRx9"
            ],
            "created_at": "2020-08-07T20:35:17+00:00",
            "user": {
                "id": "user-6",
                "login": "IG1Oo_fOcr"
            }
        }
    ]
}

}
使用嵌套对象、父/子对象或其他对象更好吗?任何关于ElasticSearch的结构和更新频率的建议都将不胜感激。
谢谢,

q9rjltbz

q9rjltbz1#

嵌套对象和父子关系都很昂贵,有关详细信息,请阅读“嵌套对象的麻烦”博客文章。
一种方法是在elasticsearch中为主帖子上的每条评论/回复创建一个单独的文档,而不是严格的父子关系,只需要有一个字段来告诉什么是父帖子,即文档之间存在松散耦合/关系。
elasticsearch的默认刷新间隔为1秒,用于提供nrt,如果需要,可以保留此默认值或根据您的用例和性能要求对其进行微调。

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