(window.webpackJsonp=window.webpackJsonp||[]).push([[15],{516:function(s,t,a){"use strict";a.r(t);var n=a(33),e=Object(n.a)({},(function(){var s=this,t=s.$createElement,a=s._self._c||t;return a("ContentSlotsDistributor",{attrs:{"slot-key":s.$parent.slotKey}},[a("div",{staticClass:"custom-block tip"},[a("p",{staticClass:"custom-block-title"},[s._v("前言")]),s._v(" "),a("p",[s._v('ES难用,索引首当其冲,索引的创建不仅复杂,而且难于维护,一旦索引有变动,就必须面对索引重建带来的服务停机和数据丢失等问题... 尽管ES官方提供了索引别名机制来解决问题,但门槛依旧很高,步骤繁琐,在生产环境中由人工操作非常容易出现失误带来严重的问题. 为了解决这些痛点,Easy-Es提供了多种策略,将用户彻底从索引的维护中解放出来,我们提供了多种索引处理策略,来满足不同用户的个性化需求. 通过对索引的初体验,相信您也可以更深体会到EE的成熟度和易用性. 其中全自动平滑模式,首次采用全球领先的"哥哥你不用动,EE我全自动"的模式,索引的创建,更新,数据迁移等所有全生命周期均无需用户介入,由EE全自动完成,过程零停机,连索引类型都可智能自动推断,一条龙服务,包您满意.是全球开源首创,充分借鉴了JVM垃圾回收算法思想,史无前例,尽管网上已有平滑过渡方案,但并非全自动,过程依旧靠人工介入,我为EE代言,请放心将索引托管给EE,索引只有在彻底迁移成功才会删除旧索引,否则均不会对原有索引和数据造成影响,发生任何意外均能保留原索引和数据,所以安全系数很高.')]),s._v(" "),a("blockquote",[a("p",[s._v("温馨提示:新手上路可尽量选择自动挡模式,老司机自动挡手动挡您请随意~")])]),s._v(" "),a("h2",{attrs:{id:"模式一-自动托管之平滑模式-自动挡-雪地模式-默认开启此模式"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#模式一-自动托管之平滑模式-自动挡-雪地模式-默认开启此模式"}},[s._v("#")]),s._v(" 模式一:自动托管之平滑模式(自动挡-雪地模式) 默认开启此模式")]),s._v(" "),a("blockquote",[a("p",[s._v("在此模式下,索引的创建更新数据迁移等全生命周期用户均不需要任何操作即可完成,过程零停机,用户无感知,可实现在生产环境的平滑过渡,类似汽车的自动档-雪地模式,平稳舒适,彻底解放用户,尽情享受自动架势的乐趣!\n需要值得特别注意的是,在自动托管模式下,系统会自动生成一条名为ee-distribute-lock的索引,该索引为框架内部使用,用户可忽略,若不幸因断电等其它因素极小概率下发生死锁,可删除该索引即可.另外,在使用时如碰到索引变更,原索引名称可能会被追加后缀_s0或_s1,不必慌张,这是全自动平滑迁移零停机的必经之路,索引后缀不影响使用,框架会自动激活该新索引.关于_s0和_s1后缀,在此模式下无法避免,因为要保留原索引数据迁移,又不能同时存在两个同名索引,凡是都是要付出代价的，如果您不认可此种处理方式,可继续往下看,总有一种适合您。")])]),s._v(" "),a("p",[s._v("其核心处理流程梳理如下图所示:\n"),a("img",{attrs:{src:"https://iknow.hs.net/c6cd0fb8-93ce-437b-ac4e-36522e378d04.png",alt:"平滑模式.png"}})]),s._v(" "),a("h2",{attrs:{id:"模式二-自动托管之非平滑模式-自动挡-运动模式"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#模式二-自动托管之非平滑模式-自动挡-运动模式"}},[s._v("#")]),s._v(" 模式二:自动托管之非平滑模式(自动挡-运动模式)")]),s._v(" "),a("p",[s._v("在此模式下,索引额创建及更新由EE全自动异步完成,但不处理数据迁移工作,速度极快类似汽车的自动挡-运动模式,简单粗暴,弹射起步! 适合在开发及测试环境使用,当然如果您使用logstash等其它工具来同步数据,亦可在生产环境开启此模式,在此模式下不会出现_s0和_s1后缀,索引会保持原名称.")]),s._v(" "),a("p",[a("img",{attrs:{src:"https://iknow.hs.net/0b1b4d41-cac5-410f-bae1-9a0b3557da75.png",alt:"非平滑模式.png"}})]),s._v(" "),a("div",{staticClass:"custom-block tip"},[a("p",{staticClass:"custom-block-title"},[s._v("提示")]),s._v(" "),a("p",[s._v("以上两种自动模式中,索引信息主要依托于实体类,如果用户未对该实体类进行任何配置,EE依然能够根据字段类型智能推断出该字段在ES中的存储类型,此举可进一步减轻开发者负担,对刚接触ES的小白更是福音.")]),s._v(" "),a("p",[s._v("当然,仅靠框架自动推断是不够的,我们仍然建议您在使用中尽量进行详细的配置,以便框架能自动创建出生产级的索引.举个例子,例如String类型字段,框架无法推断出您实际查询中对该字段是精确查询还是分词查询,所以它无法推断出该字段到底用keyword类型还是text类型,倘若是text类型,用户期望的分词器是什么? 这些都需要用户通过配置告诉框架,否则框架只能按默认值进行创建,届时将不能很好地完成您的期望.")]),s._v(" "),a("p",[s._v("自动推断类型的优先级 < 用户通过注解指定的类型优先级")])])]),s._v(" "),a("p",[s._v("自动推断映射表:")]),s._v(" "),a("table",[a("thead",[a("tr",[a("th",[s._v("JAVA")]),s._v(" "),a("th",[s._v("ES")])])]),s._v(" 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class-name"}},[s._v("Document")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token keyword"}},[s._v("class")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("getSimpleName")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("toLowerCase")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n\n        "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 此处将文章标题映射为keyword类型(不支持分词),文档内容映射为text类型,可缺省")]),s._v("\n        "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 支持分词查询,内容分词器可指定,查询分词器也可指定,,均可缺省或只指定其中之一,不指定则为ES默认分词器(standard)")]),s._v("\n        wrapper"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("mapping")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("Document")]),a("span",{pre:!0,attrs:{class:"token operator"}},[s._v("::")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("getTitle")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),s._v(" "),a("span",{pre:!0,attrs:{class:"token class-name"}},[s._v("FieldType")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),s._v("KEYWORD"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),s._v("\n                "),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token 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punctuation"}},[s._v(".")]),s._v("IK_MAX_WORD"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(")")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(";")]),s._v("\n        \n        "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 如果上述简单的mapping不能满足你业务需求,可自定义mapping")]),s._v("\n        "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// wrapper.mapping(Map);")]),s._v("\n\n        "),a("span",{pre:!0,attrs:{class:"token comment"}},[s._v("// 设置分片及副本信息,3个shards,2个replicas,可缺省")]),s._v("\n        wrapper"),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(".")]),a("span",{pre:!0,attrs:{class:"token function"}},[s._v("settings")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v("(")]),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("3")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(",")]),a("span",{pre:!0,attrs:{class:"token number"}},[s._v("2")]),a("span",{pre:!0,attrs:{class:"token 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"),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br"),a("span",{staticClass:"line-number"},[s._v("4")]),a("br"),a("span",{staticClass:"line-number"},[s._v("5")]),a("br"),a("span",{staticClass:"line-number"},[s._v("6")]),a("br"),a("span",{staticClass:"line-number"},[s._v("7")]),a("br"),a("span",{staticClass:"line-number"},[s._v("8")]),a("br"),a("span",{staticClass:"line-number"},[s._v("9")]),a("br"),a("span",{staticClass:"line-number"},[s._v("10")]),a("br"),a("span",{staticClass:"line-number"},[s._v("11")]),a("br"),a("span",{staticClass:"line-number"},[s._v("12")]),a("br"),a("span",{staticClass:"line-number"},[s._v("13")]),a("br"),a("span",{staticClass:"line-number"},[s._v("14")]),a("br"),a("span",{staticClass:"line-number"},[s._v("15")]),a("br"),a("span",{staticClass:"line-number"},[s._v("16")]),a("br"),a("span",{staticClass:"line-number"},[s._v("17")]),a("br"),a("span",{staticClass:"line-number"},[s._v("18")]),a("br"),a("span",{staticClass:"line-number"},[s._v("19")]),a("br"),a("span",{staticClass:"line-number"},[s._v("20")]),a("br"),a("span",{staticClass:"line-number"},[s._v("21")]),a("br"),a("span",{staticClass:"line-number"},[s._v("22")]),a("br"),a("span",{staticClass:"line-number"},[s._v("23")]),a("br"),a("span",{staticClass:"line-number"},[s._v("24")]),a("br"),a("span",{staticClass:"line-number"},[s._v("25")]),a("br"),a("span",{staticClass:"line-number"},[s._v("26")]),a("br"),a("span",{staticClass:"line-number"},[s._v("27")]),a("br"),a("span",{staticClass:"line-number"},[s._v("28")]),a("br")])]),a("div",{staticClass:"custom-block tip"},[a("p",{staticClass:"custom-block-title"},[s._v("温馨提示")]),s._v(" "),a("p",[s._v("实体类中,id字段不需要创建索引,否则会报错.")]),s._v(" "),a("p",[s._v("由于ES索引改动自动重建的特性,因此本接口设计时将创建索引所需的mapping,settings,alias信息三合一了,尽管其中每一项配置都可缺省,但我们仍建议您在创建索引前提前规划好以上信息,可以规避后续修改带来的不必要麻烦,若后续确有修改,您仍可以通过别名迁移的方式(推荐,可平滑过渡),或删除原索引重新创建的方式进行修改.")])]),s._v(" "),a("h2",{attrs:{id:"配置启用模式"}},[a("a",{staticClass:"header-anchor",attrs:{href:"#配置启用模式"}},[s._v("#")]),s._v(" 配置启用模式")]),s._v(" "),a("p",[s._v("以上三种模式的配置,您只需要在您项目的配置文件application.properties或application.yml中加入一行配置即可:")]),s._v(" "),a("div",{staticClass:"language-yaml line-numbers-mode"},[a("pre",{pre:!0,attrs:{class:"language-yaml"}},[a("code",[a("span",{pre:!0,attrs:{class:"token key atrule"}},[s._v("easy-es")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(":")]),s._v("\n  "),a("span",{pre:!0,attrs:{class:"token key atrule"}},[s._v("global-config")]),a("span",{pre:!0,attrs:{class:"token punctuation"}},[s._v(":")]),s._v("\n    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如果是单机运行可填false,将不加分布式锁,效率更高.")]),s._v("\n")])]),s._v(" "),a("div",{staticClass:"line-numbers-wrapper"},[a("span",{staticClass:"line-number"},[s._v("1")]),a("br"),a("span",{staticClass:"line-number"},[s._v("2")]),a("br"),a("span",{staticClass:"line-number"},[s._v("3")]),a("br"),a("span",{staticClass:"line-number"},[s._v("4")]),a("br"),a("span",{staticClass:"line-number"},[s._v("5")]),a("br")])]),a("p",[s._v("若缺省此行配置,则默认开启平滑模式.")]),s._v(" "),a("div",{staticClass:"custom-block tip"},[a("p",{staticClass:"custom-block-title"},[s._v("温馨提示")]),s._v(" "),a("ul",[a("li",[s._v("运行测试模块时强烈建议开启异步处理索引阻塞主线程,否则测试用例跑完后,主线程退出,但异步线程可能还没跑完,可能出现死锁,若不幸出现死锁,删除ee-distribute-lock即可.")]),s._v(" "),a("li",[s._v("生产环境或迁移数据量比较大的情况下,可以配置开启非阻塞,这样服务启动更快.")]),s._v(" "),a("li",[s._v("以上三种模式,用户可根据实际需求灵活选择,自由体验,在使用过程中如有任何意见或建议可反馈给我们,我们将持续优化和改进,")]),s._v(" "),a("li",[s._v("EE在索引托管采用了策略+工厂设计模式,未来如果有更多更优模式,可以在不改动原代码的基础上轻松完成拓展,符合开闭原则,也欢迎各路开源爱好者贡献更多模式PR!")]),s._v(" "),a("li",[s._v("我们将持续秉承把复杂留给框架,把易用留给用户这一理念,砥砺前行.")])])]),s._v(" "),a("p",[s._v("上述所有API对应代码演示皆可参考源码test模块->test目录->index包下代码")])])}),[],!1,null,null,null);t.default=e.exports}}]);