![]() ![]() Document Orientation : Elasticsearch builds its indexes as structured javascript object notation (JSON) documents and indexes all fields by default allowing for rapid search on every field within a document.Search results are returned even before the user finishes typing in keywords. Autocompletion & Instant Search : Elasticsearch conducts searches while the user types in search keyword and predicts the rest of the word that the user types.This is beneficial for helping with spelling errors in searches. Fuzzy Search : Elasticsearch helps find inexact matches to search keyword and returns documents that are “in-the-neighborhood” of search keywords.Full-Text Search : Elasticsearch performs searches against text-based documents and returns the documents that matches the search condition with result relevancy.GitHub : Provides the ability to search over 130 billion lines of code.Īdvantages of implementing and using Elasticsearch include:.Stack Overflow : Merges full-text search with geolocation queries, and provides more-like-this functionality to find related questions and answers.The Guardian : Combines visitor logs with social network data to provide real-time feedback to its editors about the public’s response to new articles.Wikipedia : Provides full-text search functionality with highlighted search snippets, search-as-you-type, and did-you-mean suggestions.The number of primary shards located within an index is fixed at the time that an index is created, but the number of replica shards can be changed at any time.Įxamples of organizations that have implemented Elasticsearch include: Then a replica shard is just a copy of a primary shard. Replicas are used to provide redundant copies of data to protect against hardware failure, and to serve read requests like searching or retrieving a document. ![]() Beats : Software agents installed on servers that sends server-operational data directly to either ElasticSearch or Logstash.Ī shard within Elasticsearch can either be a primary shard or a replica shard. And each document within an index is physically stored within a primary shard. ![]()
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