MongoDB has integrated text search features, as we saw in the previous recipe. However, there are multiple reasons why one would not use the Mongo text search feature and would fall back to conventional search engines such as Solr or Elasticsearch. The following are a few of the reasons:
The text search feature is production-ready in version 2.6. In version 2.4, it was introduced in beta, which is not suitable for production use cases.
Products such as Solr and Elasticsearch are built on top of Lucene, which has proven itself in the search engine arena. Solr and Elasticsearch are pretty stable products too.
You might already have expertise on products such as Solr and Elasticsearch and would like to use them as full-text search engines rather than MongoDB.
Some particular feature that your application might require may be missing in MongoDB search,.
Setting up a dedicated search engine does need additional efforts to integrate it with...