ElasticSearch

Website

elastic.co

Pricing URL

Official ElasticSearch Pricing

Categories

#Search Engine #Custom Search Engine #Custom Search #RESTful Search Engine #Search API

Apache Lucene

Website

lucene.apache.org

Pricing URL

-

Categories

#Custom Search Engine #Search Engine #Custom Search #Search API

ElasticSearch features and specs

• Scalability
  ElasticSearch is highly scalable, allowing you to handle large volumes of data and distribute indexing and search tasks across multiple nodes.
• Real-Time Data
  It provides real-time indexing and searching capabilities, making it suitable for applications that require up-to-the-minute data retrieval and analysis.
• Full-Text Search
  ElasticSearch is well-known for its powerful full-text search capabilities, enabling complex search queries and supporting a wide range of search options.
• Complex Query Support
  It offers a rich query language allowing for complex and nested searching with filters, aggregations, and more.
• Distributed Architecture
  ElasticSearch is designed to be distributed by nature, making it resilient to node failures and allowing data and search requests to be distributed across a cluster.
• Open Source
  ElasticSearch is open-source, offering flexibility and a large community of developers that contribute to its continuous improvement and support.
• Analytics
  Besides search, it also supports powerful analytics and visualization tools, especially when integrated with Kibana, its visualization dashboard.
• Integrations
  ElasticSearch can easily integrate with various data sources and frameworks, enhancing its usability across different applications.

Possible disadvantages of ElasticSearch

• Complexity
  Operating ElasticSearch can be complex, particularly when dealing with large-scale deployments, requiring specialized knowledge and expertise.
• Resource Intensive
  ElasticSearch can be resource-intensive, requiring significant amounts of RAM and CPU, which can be costly for large-scale operations.
• Consistency
  As a distributed system, ElasticSearch can sometimes face consistency issues, especially in scenarios involving partitions or network failures.
• Security
  Though security features are available, they often require additional configurations and are more robust in the paid versions, which can be a concern for open-source users.
• Cost
  While the core ElasticSearch software is open-source, scaling and additional features (like security, monitoring, and machine learning) are part of the paid Elastic Stack offerings.
• Learning Curve
  There is a steep learning curve associated with mastering ElasticSearch and its query DSL (Domain Specific Language), which can be a barrier for new users.
• Maintenance
  Properly maintaining an ElasticSearch cluster requires ongoing management, monitoring, and tuning to ensure optimal performance.
• Backup and Restore
  Managing backups and restores can be cumbersome and is not as straightforward as in some other databases or data storage solutions.

Apache Lucene features and specs

• High Performance
  Lucene is known for its high-performance indexing and searching capabilities, which makes it suitable for handling large volumes of data efficiently.
• Scalability
  Lucene can scale effectively to handle large datasets and accommodate growing data needs without significant performance degradation.
• Flexible Querying
  It offers a rich query language and supports complex queries, allowing developers to perform precise and advanced searches.
• Open Source
  Being open-source, Lucene is free to use and has a supportive community, which enhances its features through contributions and plugins.
• Extensive Ecosystem
  Lucene is part of a larger ecosystem with tools like Apache Solr and Elasticsearch, which provide additional functionalities and easier management.

Possible disadvantages of Apache Lucene

• Complexity
  Lucene can be complex to set up and configure, requiring a good understanding of indexing and search concepts.
• Limited Out-of-the-box Features
  Lucene is a low-level library and lacks some of the out-of-the-box features found in higher-level search platforms, necessitating more custom development.
• Steeper Learning Curve
  Developers need to invest time to understand its API and functionalities fully, which can be challenging for beginners.
• Java Dependency
  As a Java-based library, Lucene requires a Java environment, which might not suit all development stacks or teams preferring other languages.
• No Built-in Distributed Features
  Lucene itself does not handle distributed search and indexing natively, requiring integration with other tools like Solr or Elasticsearch for distributed capabilities.

What is Elasticsearch?

More videos:

Paper Review - "Apache Lucene 4." SIGIR 2012 workshop on open source information retrieval

More videos: