Search engines are an essential part of any content website today.
It is enabling users to easily find and access the information they need.
Vespa, Elasticsearch, and Solr are 3 of the most popular search engines in the market today, each with its own unique features and capabilities.
In this article, we’ll compare them “head to head” with capabilities, features, and performance so you can make the best decision when choosing one.
|Suggestions||Solr suggester||Elastic suggester||Prefix matching, gram matching|
|Semantic search – ANN / KNN||KNN integration. bert as a service, sense2vec||Dense vector type , bert as a service, stemming||Built in HSNW algorithm|
Distilbert With Extensions
|Spelling mistakes||Integrated spellcheck||fuzzy matching||through rewrite word/sentence embbeddings|
|Ranking ML||LATOR (internal)||External learning to rank||Ranking with ML Models, LATOR – built-in integration|
|Diversity||Faceting, grouping||grouping, aggregations strategies||Grouping abilities blog example|
|Knowledge Graph||3rd party||graph api||–|
|Multi-language||Most languages||most languages||All languages, some features are limited (e.g. tokenization)|
|Smart capabilities||Similarity “morelikethis”||deploy model into the pipeline||Easy embedding of models (ONNX and others)|
|Highlighting||Integrated highlighting||integrated highlighting||Yes|
|Phonetic search||Implements Beider-Morse Phonetic Matching||Phonetic plugin||–|
|Others||sponsored search, analytics||–||rich ranking abilities, Q&A|
|Opensource||Yes – Apache||With limitations||Yes – by Yahoo|
|Managed options||Searchstax, opensolr||elastic cloud open search||https://cloud.vespa.ai/|
|Deployment||K8s, HDFS, linux||K8S, single machine||Docker, RPM, K8S, ECS|
|Language/Stack||Java||Java||Java, Python API|
Choosing the right search engine depends on a variety of factors, such as the nature of the data, the complexity of the search queries, and the performance requirements. Here are some guidelines to help you decide which search engine to use:
Ultimately, the choice of search engine depends on the specific needs and requirements of your application. You should consider factors such as the size and complexity of your data, the types of search queries you need to support, and the performance requirements of your application before making a decision.
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