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System ElasticSearch AWS Aurora
 Name ElasticSearch AWS Aurora
 Version Version 6.4.1 (released in September 2018) Version 4.2.8
 Drawbacks Elasticsearch AMI not available NA
 Advantages Large number of drivers present for integration Managed RDBMS from AWS
 Languages Supported .Net Groovy Java JavaScript Perl PHP Python Ruby Content Management Interoperability Services (CMIS)
 Website www.elastic.co/­products/­elasticsearch aws.amazon.com/rds/aurora/
 XML Support no no
 JSON Support yes yes
 Brief description Elasticsearch is a search engine based on Lucene. It provides a distributed, multitenant-capable full-text search engine with an HTTP web interface and schema-free JSON documents. Aurora is available as part of the Amazon Relational Database Service (RDS). Although it is a proprietary technology it offers MySQL compatible service since its release . This was made PostgreSQL compatible since October 2017
 Database Model Key Value NoSQL Model Relational Database
 Technical Documentation www.elastic.co/­guide/­en/­elasticsearch/­reference/­current/­index.html https://docs.aws.amazon.com/AmazonRDS/latest/AuroraUserGuide/Aurora.Overview.html
 License Open Source. Commercial version with HA available with redislabs.com Commercial
 Cloud-based / SaaS ElasticSearch Cloud Cluster available from ElasticSearch SaaS Service from AWS
 Implementation Language C,C++ NA
 Operating System Supported Linux OS X Solaris Windows Not Applicable as its managed by AWS
 Options for Integration / Access API Proprietary protocol using JSON Restful HTTP
 Consistency Highly Consistent NA
 Foreign Keys No Yes
 Streaming Support Yes Yes
 Analytics Support NA NA
 Data Storage Schema Inverted Index NA
 Notable Users -- NA
 Key Differentiator No known Enterprise Competitor apart from Amazaon Cloud Search Supports MySQL as a SaaS service (Inno Db Engine). Disk Space provisioning done in 10 GB chunks automatically upto 64 TB.
 Concurrency Yes Yes
 Partitioning Yes No
 Replication Yes Yes
 Secondary Indexes Yes Yes based on secondary indexes using Solr
 SchemaLess Yes Yes
 SQL Query No No