DBMS > Cachelot.io vs. EventStoreDB vs. Percona Server for MongoDB vs. YTsaurus

System Properties Comparison Cachelot.io vs. EventStoreDB vs. Percona Server for MongoDB vs. YTsaurus

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Editorial information provided by DB-Engines
Name	Cachelot.io  Xexclude from comparison	EventStoreDB  Xexclude from comparison	Percona Server for MongoDB  Xexclude from comparison	YTsaurus  Xexclude from comparison
Description	In-memory caching system	Industrial-strength, open-source database solution built from the ground up for event sourcing.	A drop-in replacement for MongoDB Community Edition with enterprise-grade features.	YTsaurus is an open source platform for distributed storage and processing.
Primary database model	Key-value store	Event Store	Document store	Document store Key-value store
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.04 Rank #388   Overall #62   Key-value stores	Score 1.19 Rank #173   Overall #1   Event Stores	Score 0.60 Rank #246   Overall #39   Document stores	Score 0.21 Rank #324   Overall #45   Document stores #48   Key-value stores
Website	cachelot.io	www.eventstore.com	www.percona.com/­mongodb/­software/­percona-server-for-mongodb	ytsaurus.tech
Technical documentation		developers.eventstore.com	docs.percona.com/­percona-distribution-for-mongodb	ytsaurus.tech/­docs/­en
Developer		Event Store Limited	Percona	Yandex
Initial release	2015	2012	2015	2023
Current release		21.2, February 2021	3.4.10-2.10, November 2017
License Commercial or Open Source	Open Source Simplified BSD License	Open Source	Open Source GPL Version 2	Open Source Apache License, Version 2.0
Cloud-based only Only available as a cloud service	no	no	no	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language	C++		C++	C++
Server operating systems	FreeBSD Linux OS X	Linux Windows	Linux	Ubuntu
Data scheme	schema-free		schema-free
Typing predefined data types such as float or date	no		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	no
Secondary indexes	no		yes
SQL Support of SQL	no		no	YQL, an SQL-based language, is supported
APIs and other access methods	Memcached protocol		proprietary protocol using JSON
Supported programming languages	.Net C C++ ColdFusion Erlang Java Lisp Lua OCaml OCaml Perl PHP Python Ruby		Actionscript C C# C++ Clojure ColdFusion D Dart Delphi Erlang Go Groovy Haskell Java JavaScript Lisp Lua MatLab Perl PHP PowerShell Prolog Python R Ruby Scala Smalltalk	C++ Go Java JavaScript Python
Server-side scripts Stored procedures	no		JavaScript
Triggers	no		no
Partitioning methods Methods for storing different data on different nodes	none		Sharding	Sharding
Replication methods Methods for redundantly storing data on multiple nodes	none		Source-replica replication	yes
MapReduce Offers an API for user-defined Map/Reduce methods	no		yes	yes
Consistency concepts Methods to ensure consistency in a distributed system	none		Eventual Consistency Immediate Consistency
Foreign keys Referential integrity	no		no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no		no	ACID
Concurrency Support for concurrent manipulation of data	yes		yes	yes
Durability Support for making data persistent	no		yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no		yes via In-Memory Engine
User concepts Access control	no		Access rights for users and roles	Access Control Lists
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More resources
	Cachelot.io	EventStoreDB	Percona Server for MongoDB	YTsaurus
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