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Solr Architecture ─ Building Blocks

Following are the major building blocks of Apache Solr:

solr architecture

Solr Architecture ─ Building Blocks Request Handler:

  • The requests that send to Solr are processed by the request handlers.
  • The requests may be a query requests otherwise index update requests.
  • It is based on our requirement; we need to choose the request handler.
  • To pass a request to Solr, we generally map the handler to a certain URI end-point and the particular request will be served by it.
how apache solr works

Search Component:

  • The search component is a type of search provided in Apache Solr.
  • It might be spell checking, faceting, query, and hit highlighting and so on.
  • These search components are registered as search handlers. Multiple components can be registered to a search handler.

Query Parser:

  • The Apache Solr query parser parses the queries that we pass to Solr and verifies the queries for syntactical errors.
  • After parsing the queries, it translates them to a format which Lucene understands.

Response Writer:

  • A response writer is the component which generates the formatted outcome for the user queries.
  • Apache Solr supports response formats some are XML, JSON, CSV, etc.
  • We have different response writers for each type of response.

Analyser/tokenizer:

  • Lucene recognizes data in the form of tokens.
  • Apache Solr analyses the content, divides it into tokens, and passes these tokens to Lucene.
  • An analyser examines the text of fields and generates a token stream.
  • A tokenizer breaks the token stream prepared by the analyser into tokens.

Update Request Processor:

  • Whenever we send an update request to Apache Solr, the request is run through a set of plugins (signature, logging, indexing), collectively known as update request processor.
  • This processor is responsible for modifications that are adding a field, dropping a field, etc.
apache solr with hadoop
]]> https://www.wikitechy.com/interview-questions/apache-solr/what-is-the-internal-architecture-of-apache-solr/feed/ 0 What are the features of Apache Solr ? https://www.wikitechy.com/interview-questions/apache-solr/what-are-the-features-of-apache-solr/ https://www.wikitechy.com/interview-questions/apache-solr/what-are-the-features-of-apache-solr/#respond Mon, 12 Jul 2021 09:01:12 +0000 https://www.wikitechy.com/interview-questions/?p=218

Features of Apache Solr

Advanced Full-Text Search Capabilities:

  • Apache Solr contains powerful capabilities such as phrases, wildcards, grouping, joins and much more across several data type.

Optimized for High Volume Traffic:

  • It is proven at very large scales throughout the world.

Standards Based Open Interfaces – XML, JSON and HTTP:

  • Solr uses the tools that use to make application building a snap.

Comprehensive Administration Interfaces:

  • It ships with a built-in, responsive administrative UI to build it simple and to manage the Solr instances.

Ease Monitoring:

  • It publishes many of metric information via JMX.

Highly Scalable and Fault Tolerant:

  • Built on the battle-tested Apache Zookeeper, It makes ease to scale up and down.
  • It bakes in distribution, replication, and rebalancing as well as fault tolerance out of the box.

Flexible and Adaptable with easy configuration:

  • Solr’s is planned to adapt your needs as simplifying configuration.

Near Real-Time Indexing:

  • Apache Solr takes a benefit of Lucene’s Near Real-Time Indexing capabilities to ensure you to see your content when you would like to notice it
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