Feature Matrix for Solr and LucidWorks
General Solr Features
- Based on Apache Lucene Search Library
- Complete query capabilities, such as keyword, Boolean and +/- queries. Also supports proximity searches, wildcards, fielded searches, term/field/document weights, find-similar, spell-checking, auto-suggest, multi-lingual and more.
- Sort by relevancy, date, or any field. Strong out-of-the box relevancy ranking means little custom tweaking except in extreme cases.
- Query term highlighting in result sets.
- Faceting of results and control over number and types of facets displayed.
- Scalable, with low overhead indexes, rapid incremental indexing, and distributed search. Index replication reduces system downtime.
- HTML-based administration interface (LW builds on this, however).
- Open interfaces based on standards such as XML, JSON, CSV and HTTP to load data and get results.
Other features have been added over successive releases.
System Configuration and Setup | ||||
| Feature | Solr 1.4.1 | Solr 3.5 | Solr Trunk (4.0) | LucidWorks 2.0 |
| Wizard-based installation |  | | |  |
| Built-in version-to-version migration tools | | | | |
| ReST API for configuration | | | | |
Connectors | ||||
| Feature | Solr 1.4.1 | Solr 3.5 | Solr Trunk (4.0) | LucidWorks 2.0 |
| Websites | | | | |
| SolrXML | | | | |
| Local filesystems | | | | |
| SMB (Windows Shares) | | | | |
| HDFS, S3 | | | | |
| JDBC | | | | |
| SharePoint | | | | |
| Load CSV | | | | |
| Post JSON | | | | |
| Create custom connectors | | | | |
Indexing Content | ||||
| Feature | Solr 1.4.1 | Solr 3.5 | Solr Trunk (4.0) | LucidWorks 2.0 |
| UI for configuration of data sources | | | | |
| UI dashboard for monitoring crawl and index processes | | | | |
| Scheduling content indexing | | | | |
| Transform XML Solr docs via XSLT for indexing | | | | |
| Various fixes for multi-threaded DIH | | | | |
| Near-Realtime | | | | |
| New Lucene index format | | | | |
| Batch crawling | | | | |
| Embedded Luke to analyze indexes | | | | |
Index Management | ||||
| Feature | Solr 1.4.1 | Solr 3.5 | Solr Trunk (4.0) | LucidWorks 2.0 |
| UI for adding and updating fields | | | | |
| TermsComponent for access to indexed terms | | | | |
| Lockless Writes (DocumentWriterPerThread) | | | | |
| Automaton based auto-complete/suggest | | | | |
| Data-specific indexing codecs | | | | |
| Per-field similarity definition | | | | |
Query Handling | ||||
| Feature | Solr 1.4.1 | Solr 3.5 | Solr Trunk (4.0) | LucidWorks 2.0 |
| eDismax query parser | | | | |
| Lucid query parser | | | | |
| Spell Check | | | | |
| Unary operators (+,-,!) will not be operators if followed by whitespace | | | | |
| Mixed range operators (such as { and ] ) are legal | | | | |
| Open-ended ranges (such as [a TO *]) | | | | |
| KStemmer | | | | |
| Spellcheck without separate index | | | | |
| Locale-sensitive range queries | | | | |
| Realtime Get | | | | |
| Hunspell Stemmer | | | | |
| Language Identification | | | | |
Results and Relevance | ||||
| Feature | Solr 1.4.1 | Solr 3.5 | Solr Trunk (4.0) | LucidWorks 2.0 |
| Spatial search, filtering, boosting, sorting | | | | |
| Grouping (Field Collapsing) | | | | |
| User alerts for new content | | | | |
| Suggester (Auto-complete) | | | | |
| Popularity-based ranking (Click Scoring Relevance Framework) | | | | |
| Per-field/flexible scoring | | | | |
| Numeric range faceting | | | | |
| CSV response writer | | | | |
| Ruby, JSON, XML, Python and response writers | | | | |
| Sort by output of a FunctionQuery | | | | |
| Highlighting improvements (such as fastvectorhighlight) | | | | |
| SolrJ parses grouped and range responses | | | | |
| Pseudo-field support to return extra data such as function query values, score explanation and field aliasing with stored fields | | | | |
| Relevance Function Queries | | | | |
| Pivot Faceting | | | | |
| Conditional function queries | | | | |
| Per-segment field faceting for improved performance with Near-Real Time search | | | | |
| New ranking algorithms (BM25, LM, DFR, etc.) | | | | |
| Highlight a facet term instead of query term when browsing facet results | | | | |
Security | ||||
| Feature | Solr 1.4.1 | Solr 3.5 | Solr Trunk (4.0) | LucidWorks 2.0 |
| HTTPS encryption between components | | | | |
| Access Control List integration for document access control | | | | |
| LDAP or Active Directory for user authentication | | | | |
| Solr filter queries (fq) for document access control | | | | |
Deployment and Monitoring | ||||
| Feature | Solr 1.4.1 | Solr 3.5 | Solr Trunk (4.0) | LucidWorks 2.0 |
| MBeans for indexing activity | | | | |
| MBeans for search activity | | | | |
| MBeans for filter, result and document caches | | | | |
| MBeans for crawling activity | | | | |
| Zabbix integration | | | | |
| Nagios integration | | | | |
| Built-in QPS Dashboard | | | | |
| Searchable log files | | | | |
| StatsComponent support for dates and strings | | | | |
Scaling and Performance | ||||
| Feature | Solr 1.4.1 | Solr 3.5 | Solr Trunk (4.0) | LucidWorks 2.0 |
| SolrCloud | | | | |
| Distributed search | | | | |
| Memory improvements for searching and sorting | | | | |
| Post filters and filter cache controls | | | | | Fast fuzzyquery | | | | |
| Tiered merge policy | | | | |
| Distributed search grouping (distributed field collapsing) | | | | |
Read more on LucidWorks Search Platform.