DBMS > AlaSQL vs. Alibaba Cloud TSDB vs. Cloudflare Workers KV vs. EventStoreDB

System Properties Comparison AlaSQL vs. Alibaba Cloud TSDB vs. Cloudflare Workers KV vs. EventStoreDB

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Editorial information provided by DB-Engines
Name	AlaSQL  Xexclude from comparison	Alibaba Cloud TSDB  Xexclude from comparison	Cloudflare Workers KV  Xexclude from comparison	EventStoreDB  Xexclude from comparison
Description	JavaScript DBMS library	A stable, reliable, and cost-effective online high-performance time series database service	A global, low-latency, key-value store for applications on Cloudflare with exceptionally high read volumes and low-latency.	Industrial-strength, open-source database solution built from the ground up for event sourcing.
Primary database model	Document store Relational DBMS	Time Series DBMS	Key-value store	Event Store
DB-Engines Ranking measures the popularity of database management systems Trend Chart	Score 0.51 Rank #256   Overall #40   Document stores #118   Relational DBMS	Score 0.29 Rank #301   Overall #26   Time Series DBMS	Score 0.39 Rank #274   Overall #39   Key-value stores	Score 1.19 Rank #173   Overall #1   Event Stores
Website	alasql.org	www.alibabacloud.com/­product/­hitsdb	www.cloudflare.com/­developer-platform/­workers-kv	www.eventstore.com
Technical documentation	github.com/­AlaSQL/­alasql	www.alibabacloud.com/­help/­en/­time-series-database/­latest/­what-is-tsdb	developers.cloudflare.com/­kv/­api	developers.eventstore.com
Developer	Andrey Gershun & Mathias R. Wulff	Alibaba	Cloudflare	Event Store Limited
Initial release	2014		2018	2012
Current release				21.2, February 2021
License Commercial or Open Source	Open Source MIT-License	commercial	commercial	Open Source
Cloud-based only Only available as a cloud service	no	yes	yes	no
DBaaS offerings (sponsored links) Database as a Service Providers of DBaaS offerings, please contact us to be listed.
Implementation language	JavaScript
Server operating systems	server-less, requires a JavaScript environment (browser, Node.js)	hosted	hosted	Linux Windows
Data scheme	schema-free	schema-free	schema-free
Typing predefined data types such as float or date	no	Numeric data and Strings	no
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	no	no
SQL Support of SQL	Close to SQL99, but no user access control, stored procedures and host language bindings.	no	no
APIs and other access methods	JavaScript API	HTTP REST	HTTP REST Proprietary protocol
Supported programming languages	JavaScript	Java	C C++ Dart JavaScript Kotlin Python Rust Scala
Server-side scripts Stored procedures	no	no	no
Triggers	yes	no	no
Partitioning methods Methods for storing different data on different nodes	none
Replication methods Methods for redundantly storing data on multiple nodes	none		yes
MapReduce Offers an API for user-defined Map/Reduce methods	no	no	no
Consistency concepts Methods to ensure consistency in a distributed system	none	Immediate Consistency	Eventual Consistency
Foreign keys Referential integrity	yes	no	no
Transaction concepts Support to ensure data integrity after non-atomic manipulations of data	yes only for local storage and DOM-storage	no	no
Concurrency Support for concurrent manipulation of data		yes	yes
Durability Support for making data persistent	yes by using IndexedDB, SQL.JS or proprietary FileStorage	yes	yes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.	yes	no	no
User concepts Access control	no	Access managed on TSDB instance level
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More resources
	AlaSQL	Alibaba Cloud TSDB	Cloudflare Workers KV	EventStoreDB
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