DBMS > Drizzle vs. Elasticsearch vs. Google Cloud Spanner
System Properties Comparison Drizzle vs. Elasticsearch vs. Google Cloud Spanner
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|Editorial information provided by DB-Engines|
|Name||Drizzle Xexclude from comparison||Elasticsearch Xexclude from comparison||Google Cloud Spanner Xexclude from comparison|
|Drizzle has published its last release in September 2012. The open-source project is discontinued and Drizzle is excluded from the DB-Engines ranking.|
|Description||MySQL fork with a pluggable micro-kernel and with an emphasis of performance over compatibility.||A distributed, RESTful modern search and analytics engine based on Apache Lucene Elasticsearch lets you perform and combine many types of searches such as structured, unstructured, geo, and metric||A horizontally scalable, globally consistent, relational database service. It is the externalization of the core Google database that runs the biggest aspects of Google, like Ads and Google Play.|
|Primary database model||Relational DBMS||Search engine||Relational DBMS|
|Secondary database models||Document store|
|Developer||Drizzle project, originally started by Brian Aker||Elastic|
|Current release||7.2.4, September 2012||7.8.0, June 2020|
|License Commercial or Open Source||Open Source GNU GPL||Open Source Elastic License||commercial|
|Cloud-based only Only available as a cloud service||no||no||yes|
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|Server operating systems||FreeBSD|
|All OS with a Java VM||hosted|
|Data scheme||yes||schema-free Flexible type definitions. Once a type is defined, it is persistent||yes|
|Typing predefined data types such as float or date||yes||yes||yes|
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.||no||no|
|Secondary indexes||yes||yes All search fields are automatically indexed||yes|
|SQL Support of SQL||yes with proprietary extensions||SQL-like query language||yes Query statements complying to ANSI 2011|
|APIs and other access methods||JDBC||Java API|
RESTful HTTP/JSON API
|gRPC (using protocol buffers) API|
JDBC At present, JDBC supports read-only queries. No support for DDL or DML statements.
RESTful HTTP API
|Supported programming languages||C|
Community Contributed Clients
|Server-side scripts Stored procedures||no||yes||no|
|Triggers||no hooks for callbacks inside the server can be used.||yes by using the 'percolation' feature||no|
|Partitioning methods Methods for storing different data on different nodes||Sharding||Sharding||Sharding|
|Replication methods Methods for redundantly storing data on multiple nodes||Multi-source replication|
|yes||Multi-source replication with 3 replicas for regional instances.|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||ES-Hadoop Connector||yes using Google Cloud Dataflow|
|Consistency concepts Methods to ensure consistency in a distributed system||Eventual Consistency Synchronous doc based replication. Get by ID may show delays up to 1 sec. Configurable write consistency: one, quorum, all||Immediate Consistency|
|Foreign keys Referential integrity||yes||no||yes by using interleaved tables, this features focuses more on performance improvements than on referential integrity|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||ACID||no||ACID Strict serializable isolation|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes|
|Durability Support for making data persistent||yes||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||Memcached and Redis integration||no|
|User concepts Access control||Pluggable authentication mechanisms e.g. LDAP, HTTP||Access rights for users, groups and roles based on Google Cloud Identity and Access Management (IAM)|
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|Drizzle||Elasticsearch||Google Cloud Spanner|
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