DBMS > Alibaba Cloud TSDB vs. BigObject vs. Cloudflare Workers KV vs. Sequoiadb

System Properties Comparison Alibaba Cloud TSDB vs. BigObject vs. Cloudflare Workers KV vs. Sequoiadb

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Name	Alibaba Cloud TSDB  Xexclude from comparison	BigObject  Xexclude from comparison	Cloudflare Workers KV  Xexclude from comparison	Sequoiadb  Xexclude from comparison
Description	A stable, reliable, and cost-effective online high-performance time series database service	Analytic DBMS for real-time computations and queries	A global, low-latency, key-value store for applications on Cloudflare with exceptionally high read volumes and low-latency.	NewSQL database with distributed OLTP and SQL
Primary database model	Time Series DBMS	Relational DBMS a hierachical model (tree) can be imposed	Key-value store	Document store Relational DBMS
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.29 Rank #301   Overall #26   Time Series DBMS	Score 0.19 Rank #329   Overall #146   Relational DBMS	Score 0.39 Rank #274   Overall #39   Key-value stores	Score 0.50 Rank #258   Overall #41   Document stores #120   Relational DBMS
Website	www.alibabacloud.com/­product/­hitsdb	bigobject.io	www.cloudflare.com/­developer-platform/­workers-kv	www.sequoiadb.com
Technical documentation	www.alibabacloud.com/­help/­en/­time-series-database/­latest/­what-is-tsdb	docs.bigobject.io	developers.cloudflare.com/­kv/­api	www.sequoiadb.com/­en/­index.php?m=Files&a=index
Developer	Alibaba	BigObject, Inc.	Cloudflare	Sequoiadb Ltd.
Initial release		2015	2018	2013
License Commercial or Open Source	commercial	commercial free community edition available	commercial	Open Source Server: AGPL; Client: Apache V2
Cloud-based only Only available as a cloud service	yes	no	yes	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language				C++
Server operating systems	hosted	Linux distributed as a docker-image OS X distributed as a docker-image (boot2docker) Windows distributed as a docker-image (boot2docker)	hosted	Linux
Data scheme	schema-free	yes	schema-free	schema-free
Typing predefined data types such as float or date	Numeric data and Strings	yes	no	yes oid, date, timestamp, binary, regex
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	no
Secondary indexes	no	yes	no	yes
SQL Support of SQL	no	SQL-like DML and DDL statements	no	SQL-like query language
APIs and other access methods	HTTP REST	fluentd ODBC RESTful HTTP API	HTTP REST Proprietary protocol	proprietary protocol using JSON
Supported programming languages	Java		C C++ Dart JavaScript Kotlin Python Rust Scala	.Net C++ Java PHP Python
Server-side scripts Stored procedures	no	Lua	no	JavaScript
Triggers	no	no	no	no
Partitioning methods Methods for storing different data on different nodes		none		Sharding
Replication methods Methods for redundantly storing data on multiple nodes		none	yes	Source-replica replication
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	Immediate Consistency	none	Eventual Consistency	Eventual Consistency
Foreign keys Referential integrity	no	yes automatically between fact table and dimension tables	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	no	no	no	Document is locked during a transaction
Concurrency Support for concurrent manipulation of data	yes	yes Read/write lock on objects (tables, trees)	yes	yes
Durability Support for making data persistent	yes	yes	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	no	yes	no	no
User concepts Access control	Access managed on TSDB instance level	no		simple password-based access control
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More resources
	Alibaba Cloud TSDB	BigObject	Cloudflare Workers KV	Sequoiadb
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