这些技术之间的核心架构差异是什么?

另外,哪些用例通常更适合每种用例?


当前回答

我一直致力于。net应用程序的solr和弹性搜索。 我所面临的主要不同是

弹性搜索:

更多的代码和更少的配置,但有api的改变 但仍然是一个代码更改 对于复杂类型,类型中类型即嵌套类型(在solr中无法实现)

Solr:

代码更少,配置更多,因此维护更少 用于在查询期间对结果进行分组(在 弹性搜索,简而言之,没有直接的方法)

其他回答

如果您已经在使用SOLR,请坚持使用。如果你正在创业,使用弹性搜索。

最大的主要问题已经在SOLR中得到了解决,它是相当成熟的。

我只使用弹性搜索。因为我发现solr很难开始。 Elastic-search的特点:

启动方便,设置少。即使是新手也可以一步一步地设置集群。 简单的Restful API,使用NoSQL查询。以及许多易于访问的语言库。 好的文件,你可以读这本书:。官方网站上有网络版。

更新

既然问题的范围已经被纠正了,我也可以在这方面补充一些东西:

Apache Solr和ElasticSearch之间有很多比较,所以我将引用我自己认为最有用的,即涵盖最重要的方面:

Bob Yoplait already linked kimchy's answer to ElasticSearch, Sphinx, Lucene, Solr, Xapian. Which fits for which usage?, which summarizes the reasons why he went ahead and created ElasticSearch, which in his opinion provides a much superior distributed model and ease of use in comparison to Solr. Ryan Sonnek's Realtime Search: Solr vs Elasticsearch provides an insightful analysis/comparison and explains why he switched from Solr to ElasticSeach, despite being a happy Solr user already - he summarizes this as follows: Solr may be the weapon of choice when building standard search applications, but Elasticsearch takes it to the next level with an architecture for creating modern realtime search applications. Percolation is an exciting and innovative feature that singlehandedly blows Solr right out of the water. Elasticsearch is scalable, speedy and a dream to integrate with. Adios Solr, it was nice knowing you. [emphasis mine] The Wikipedia article on ElasticSearch quotes a comparison from the reputed German iX magazine, listing advantages and disadvantages, which pretty much summarize what has been said above already: Advantages: ElasticSearch is distributed. No separate project required. Replicas are near real-time too, which is called "Push replication". ElasticSearch fully supports the near real-time search of Apache Lucene. Handling multitenancy is not a special configuration, where with Solr a more advanced setup is necessary. ElasticSearch introduces the concept of the Gateway, which makes full backups easier. Disadvantages: Only one main developer [not applicable anymore according to the current elasticsearch GitHub organization, besides having a pretty active committer base in the first place] No autowarming feature [not applicable anymore according to the new Index Warmup API]


最初的回答

它们是针对完全不同用例的完全不同的技术,因此根本无法以任何有意义的方式进行比较:

Apache Solr - Apache Solr offers Lucene's capabilities in an easy to use, fast search server with additional features like faceting, scalability and much more Amazon ElastiCache - Amazon ElastiCache is a web service that makes it easy to deploy, operate, and scale an in-memory cache in the cloud. Please note that Amazon ElastiCache is protocol-compliant with Memcached, a widely adopted memory object caching system, so code, applications, and popular tools that you use today with existing Memcached environments will work seamlessly with the service (see Memcached for details).

(强调我的)

也许这已经与以下两种相关技术混淆了:

ElasticSearch -这是一个开源(Apache 2)、分布式、RESTful的搜索引擎,建立在Apache Lucene之上。 Amazon CloudSearch—Amazon CloudSearch是一个完全托管的云搜索服务,允许客户轻松地将快速和高度可扩展的搜索功能集成到他们的应用程序中。

Solr和ElasticSearch的产品乍听起来非常相似,并且都使用相同的后端搜索引擎,即Apache Lucene。

虽然Solr更老,功能更全面,更成熟,因此被广泛使用,但ElasticSearch是专门为解决Solr在现代云环境中可伸缩性需求方面的缺点而开发的,这些缺点很难用Solr解决。

因此,将ElasticSearch与最近推出的Amazon CloudSearch进行比较可能是最有用的(参见介绍性文章Start Searching in One Hour for Less Than 100 $ / Month),因为两者都声称在原则上涵盖相同的用例。

我使用Elasticsearch 3年了,使用Solr大约一个月,我觉得与Solr安装相比,Elasticsearch集群非常容易安装。Elasticsearch有一个帮助文档池,其中有很好的解释。其中一个用例是直方图聚合,它在ES中可用,但在Solr中找不到。

我一直致力于。net应用程序的solr和弹性搜索。 我所面临的主要不同是

弹性搜索:

更多的代码和更少的配置,但有api的改变 但仍然是一个代码更改 对于复杂类型,类型中类型即嵌套类型(在solr中无法实现)

Solr:

代码更少,配置更多,因此维护更少 用于在查询期间对结果进行分组(在 弹性搜索,简而言之,没有直接的方法)