What is Solr search?

Solr (pronounced “solar”) is an open-source enterprise-search platform, written in Java. Its major features include full-text search, hit highlighting, faceted search, real-time indexing, dynamic clustering, database integration, NoSQL features and rich document (e.g., Word, PDF) handling.

Is Solr search free?

Apache Solr (stands for Searching On Lucene w/ Replication) is a free, open-source search engine based on the Apache Lucene library. An Apache Lucene subproject, it has been available since 2004 and is one of the most popular search engines available today worldwide.

How can I improve my Solr search?

5 Ways to Optimize Sitecore Solr Search Performance

1. Set the autoSoftCommit feature to 2 minutes.
2. Set the autoCommit feature to 5 minutes.
3. Use autowarmCount = 0 for All Cache Settings.
4. Set maxRamMB to 200.
5. Use the Default Values of True for Lazy Fields and Sorted Query.

Who uses Solr search?

NASA is using Solr as the Enterprise Search component in its NEBULA cloud computing platform. Netflix uses Solr for their site search feature. Panasonic Europe uses Solr to power the search and faceted navigation on it’s sites for 30 countries. Reddit uses Solr for search.

Is Solr reliable?

Solr offers automatic load balancing, distributed reindexing, failover, and recovery queries. If implemented correctly and managed well, it can become a highly reliable, scalable, fault-tolerant search engine.

Is Solr still used?

Solr has been around for a much longer period of time, but its ecosystem has stagnated even after having a well-developed and has a larger user base.

Why Solr is fast?

For every value of a numeric field, Lucene stores several values with different precisions. This allows Lucene to run range queries very efficiently. Since your use-case seems to leverage numeric range queries a lot, this may explain why Solr is so much faster.

How can I make Solr index faster?

After you post all your documents, call commit once manually or from SolrJ – it will take a while to commit, but this will be much faster overall. Also after you are done with your bulk import, reduce maxTime and maxDocs , so that any incremental posts you will do to Solr will get committed much sooner.

How do I disable Solr cache?

cache Parameter Solr caches the results of all queries and filter queries by default. To disable result caching, set the cache=false parameter.

How does Solr cache work?

Solr caches are associated with a specific instance of an Index Searcher, a specific view of an index that doesn’t change during the lifetime of that searcher. As long as that Index Searcher is being used, any items in its cache will be valid and available for reuse.

Does Solr cache queries?

To obtain maximum query performance, Solr stores several different pieces of information using in-memory caches. Result sets, filters and document fields are all cached so that subsequent, similar searches can be handled quickly.