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DBMS > Blueflood vs. Drizzle vs. Heroic vs. Oracle Coherence

System Properties Comparison Blueflood vs. Drizzle vs. Heroic vs. Oracle Coherence

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Editorial information provided by DB-Engines
NameBlueflood  Xexclude from comparisonDrizzle  Xexclude from comparisonHeroic  Xexclude from comparisonOracle Coherence  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.
DescriptionScalable TimeSeries DBMS based on CassandraMySQL fork with a pluggable micro-kernel and with an emphasis of performance over compatibility.Time Series DBMS built at Spotify based on Cassandra or Google Cloud Bigtable, and ElasticSearchOracles in-memory data grid solution
Primary database modelTime Series DBMSRelational DBMSTime Series DBMSKey-value store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.13
Rank#346  Overall
#33  Time Series DBMS
Score0.46
Rank#265  Overall
#22  Time Series DBMS
Score1.97
Rank#129  Overall
#22  Key-value stores
Websiteblueflood.iogithub.com/­spotify/­heroicwww.oracle.com/­java/­coherence
Technical documentationgithub.com/­rax-maas/­blueflood/­wikispotify.github.io/­heroicdocs.oracle.com/­en/­middleware/­standalone/­coherence
DeveloperRackspaceDrizzle project, originally started by Brian AkerSpotifyOracle
Initial release2013200820142007
Current release7.2.4, September 201214.1, August 2023
License infoCommercial or Open SourceOpen Source infoApache 2.0Open Source infoGNU GPLOpen Source infoApache 2.0commercial
Cloud-based only infoOnly available as a cloud servicenononono
DBaaS offerings (sponsored links) infoDatabase as a Service

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Implementation languageJavaC++JavaJava
Server operating systemsLinux
OS X
FreeBSD
Linux
OS X
All OS with a Java VM
Data schemepredefined schemeyesschema-freeschema-free
Typing infopredefined data types such as float or dateyesyesyesyes
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.nonono
Secondary indexesnoyesyes infovia Elasticsearchno
SQL infoSupport of SQLnoyes infowith proprietary extensionsnono
APIs and other access methodsHTTP RESTJDBCHQL (Heroic Query Language, a JSON-based language)
HTTP API
JCache
JPA
RESTful HTTP API
Supported programming languagesC
C++
Java
PHP
.Net
C++
Java
Server-side scripts infoStored proceduresnononono
Triggersnono infohooks for callbacks inside the server can be used.noyes infoLive Events
Partitioning methods infoMethods for storing different data on different nodesSharding infobased on CassandraShardingShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesselectable replication factor infobased on CassandraMulti-source replication
Source-replica replication
yesyes, with selectable consistency level
MapReduce infoOffers an API for user-defined Map/Reduce methodsnononono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency infobased on Cassandra
Immediate Consistency infobased on Cassandra
Eventual Consistency
Immediate Consistency
Eventual Consistency
Immediate Consistency
Foreign keys infoReferential integritynoyesnono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoACIDnoconfigurable
Concurrency infoSupport for concurrent manipulation of datayesyesyesyes
Durability infoSupport for making data persistentyesyesyesyes infooptionally
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.nonoyes
User concepts infoAccess controlnoPluggable authentication mechanisms infoe.g. LDAP, HTTPauthentification to access the cache via certificates or http basic authentication

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More resources
BluefloodDrizzleHeroicOracle Coherence
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