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DBMS > Memcached vs. Oracle Coherence vs. YDB

System Properties Comparison Memcached vs. Oracle Coherence vs. YDB

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Editorial information provided by DB-Engines
NameMemcached  Xexclude from comparisonOracle Coherence  Xexclude from comparisonYDB  Xexclude from comparison
DescriptionIn-memory key-value store, originally intended for cachingOracles in-memory data grid solutionA distributed fault-tolerant database service, with high availability, scalability, immediate consistency and ACID transactions and providing an Amazon DynamoDB compatible API
Primary database modelKey-value storeKey-value storeDocument store
Relational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score17.74
Rank#32  Overall
#4  Key-value stores
Score2.02
Rank#119  Overall
#20  Key-value stores
Score0.32
Rank#284  Overall
#43  Document stores
#129  Relational DBMS
Websitewww.memcached.orgwww.oracle.com/­java/­coherencegithub.com/­ydb-platform/­ydb
ydb.tech
Technical documentationgithub.com/­memcached/­memcached/­wikidocs.oracle.com/­en/­middleware/­standalone/­coherenceydb.tech/­en/­docs
DeveloperDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalOracleYandex
Initial release200320072019
Current release1.6.27, May 202414.1, August 2023
License infoCommercial or Open SourceOpen Source infoBSD licensecommercialOpen Source infoApache 2.0; commercial license available
Cloud-based only infoOnly available as a cloud servicenonono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageCJava
Server operating systemsFreeBSD
Linux
OS X
Unix
Windows
All OS with a Java VMLinux
Data schemeschema-freeschema-freeFlexible Schema (defined schema, partial schema, schema free)
Typing infopredefined data types such as float or datenoyesyes
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.nono
Secondary indexesnonoyes
SQL infoSupport of SQLnonoSQL-like query language (YQL)
APIs and other access methodsProprietary protocolJCache
JPA
RESTful HTTP API
RESTful HTTP API (DynamoDB compatible)
Supported programming languages.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
.Net
C++
Java
Go
Java
JavaScript (Node.js)
PHP
Python
Server-side scripts infoStored proceduresnonono
Triggersnoyes infoLive Events
Partitioning methods infoMethods for storing different data on different nodesnoneShardingSharding
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoRepcached, a Memcached patch, provides this functionallityyes, with selectable consistency levelActive-passive shard replication
MapReduce infoOffers an API for user-defined Map/Reduce methodsnonono
Consistency concepts infoMethods to ensure consistency in a distributed systemEventual Consistency
Immediate Consistency
Immediate Consistency
Foreign keys infoReferential integritynonono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of datanoconfigurableACID
Concurrency infoSupport for concurrent manipulation of datayesyesyes
Durability infoSupport for making data persistentnoyes infooptionallyyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yesno
User concepts infoAccess controlyes infousing SASL (Simple Authentication and Security Layer) protocolauthentification to access the cache via certificates or http basic authenticationAccess rights defined for Yandex Cloud users

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More resources
MemcachedOracle CoherenceYDB
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