Differences between Apache Solr and ElasticSearch:
| Feature | Solr 6.2.1 | ElasticSearch 5.0 |
|---|---|---|
| Format | XML, CSV, JSON |
JSON |
| HTTP REST API | ✔ | ✔ |
| Binary API | ✔ SolrJ | ✔ TransportClient, Thrift (through a plugin) |
| JMX support | ✔ | ☓ ES specific stats are exposed through the REST API |
| Official client libraries | Java | Java, Groovy, PHP, Ruby, Perl, Python, .NET, Javascript Official list of clients |
| Community client libraries | PHP, Ruby, Perl, Scala, Python, .NET, Javascript, Go, Erlang, Clojure |
Clojure, Cold Fusion, Erlang, Go, Groovy, Haskell, Java, JavaScript, .NET, OCaml, Perl, PHP, Python, R, Ruby, Scala, Smalltalk, Vert.x Complete list |
| 3rd-party product integration (open-source) |
Drupal, Magento, Django, ColdFusion, Wordpress, OpenCMS, Plone, Typo3, ez Publish, Symfony2, Riak (via Yokozuna) |
Drupal, Django, Symfony2, Wordpress, CouchBase |
| 3rd-party product integration (commercial) |
DataStax Enterprise Search, Cloudera Search, Hortonworks Data Platform, MapR |
SearchBlox, Hortonworks Data Platform, MapR etc Complete list |
| Output | JSON, XML, PHP, Python, Ruby, CSV, Velocity, XSLT, native Java |
JSON, XML/HTML (via plugin) |
