可能你会面临这样一种状况,在架构设计之前,你对业务不甚了解,需要给到的也不置可否,这个时候你既无奈明确到底是要应用单体架构还是应用微服务架构,如果应用单体,后续业务扩大可能带来大量批改,如果应用微服务,后期可能在工期上把我的项目给耽搁了,你该怎么办?这就是这篇文章想要研究的面向微服务的单体架构的由来。
为什么不必传统单体架构?
咱们能够看到随着业务的降级,单块的代码的拆分会变得越来越艰难,如果在后期没有做好布局和伏笔,那么后续的演变就是一场劫难。所以,目前的设计如果是企业级别的,都必然要做架构的适当冗余,因为没有人能晓得将来长什么样,架构必然和业务一样是随着综合因素缓缓长进去的,不可能欲速不达,一步到位。
为什么不必微服务架构?
微服务痛点
- 数据一致性散发
- 数据聚合 Join
- 分布式事务
- 单体零碎解耦拆分
什么时候开始用微服务
这里援用架构师杨波 (前 Ebay 架构师 / 携程 / 拍拍贷研发部总监,资深技术架构师,微服务技术专家) 的一些观点:
“企业一开始不举荐间接应用微服务,因为微服务须要后期 基础设施 的投资,复杂性很高(详见上面微服务的四大痛点),如果对问题畛域并不是很了解,一开始用微服务,你很难去划分服务的边界,你的生产力反而会比拟低,而且你花了很大精力进行开发,你的产品并没有被市场验证过,有可能会失败,所以这个选项危险会比拟高。所以咱们举荐的是单块优先,先从单块使用做起,这样成本低,团队成员也比拟少,毋庸太多研发投入,就能够交付一些根本的性能给客户应用。
随着利用越来越胜利,客户减少,你的零碎复杂度会越来越高,就会呈现单块利用和团队规模之间的矛盾,生产力会随着业务复杂度逐步升高。所以在一些初创型公司,你更多看到的是单块利用,只有一些中大型的公司会看到微服务架构。”
“交叉点表明,业务曾经达到了肯定的复杂性,单块利用曾经无奈满足业务增长的须要,研发效率开始降落了,而微服务能够晋升研发和交付的效率。这个点须要架构师去综合、衡量。集体教训,个别团队须要达到百人规模,才去思考微服务。”
- 并发量不高——业务流量并没有达到千万或亿级别
- 团队规模——团队成员并没有达到百位规模
- 零碎复杂度——没有高并发也就谈不上复杂度
- 实用场景——互联网 / 物联网
微服务兼容的单体架构
演变不便——低代码演变
如上所示,咱们能够看到 API 在拆解过程中,根本没有做任何代码变更(具体代码能够查看我的 GitHub 或者你也能够参看我的视频《ABP vNext 框架实战系列》),Domain 的演变也只是做代码简略迁徙,整个重构过程并没有做多大的变动。这就是所谓“继续晋升程序员幸福指数 ” 的模块化之道啊。
总结
ABP vNext 的模块化思维给了微服务演变提供了底层能力,我在这儿只是抛砖引玉,心愿有更多的人能参加进来进行分享。如果你想理解更多 ABP vNext 的中央,你也能够参看我的另外一篇文字《浅谈 Abp vNext 的模块化设计》,谢谢您的捧场。
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