DBMS > EXASOL vs. Redis vs. Snowflake vs. TerarkDB

System Properties Comparison EXASOL vs. Redis vs. Snowflake vs. TerarkDB

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Editorial information provided by DB-Engines

Name

Description

High-performance, in-memory, MPP database specifically designed for in-memory analytics.

In-memory data structure store, used as database, cache and message broker info

Redis focuses on performance so most of its design decisions prioritize high performance and very low latencies.

Cloud-based data warehousing service for structured and semi-structured data

A key-value store forked from RocksDB with advanced compression algorithms. It can be used standalone or as a storage engine for MySQL and MongoDB

Primary database model

Relational DBMS

Key-value store info

Multiple data types and a rich set of operations, as well as configurable data expiration, eviction and persistence

Relational DBMS

Key-value store

Secondary database models

Document store info

with Redis Modules
Graph DBMS info

with Redis Modules
Search engine info

with Redis Modules
Time Series DBMS info

with Redis Modules

DB-Engines Ranking measures the popularity of database management systems
Trend Chart

Score	2.75
Rank	#88	Overall
	#44	Relational DBMS

Score	144.81
Rank	#8	Overall
	#1	Key-value stores

Score	2.39
Rank	#100	Overall
	#49	Relational DBMS

Score	0.06
Rank	#310	Overall
	#50	Key-value stores

Website

www.exasol.com/en/products

redis.io

www.snowflake.com

github.com/Terark/terarkdb

Technical documentation

www.exasol.com/en/community/resources

redis.io/documentation

docs.snowflake.net/manuals/index.html

github.com/Terark/terarkdb/wiki

Developer

Exasol

Salvatore Sanfilippo info

Development sponsored by Redis Labs

Snowflake Computing Inc.

Terark

Initial release

2000

2009

2014

2016

Current release

5.0.8, March 2020

License

Commercial or Open Source

commercial

Open Source info

BSD 3-Clause, commercial license available

commercial

commercial info

restricted open source version available

Cloud-based only info

Only available as a cloud service

yes

DBaaS offerings (sponsored links) info

Database as a Service

Providers of DBaaS offerings, please contact us to be listed.

Implementation language

C++

Server operating systems

BSD
Linux
OS X
Windows info

ported and maintained by Microsoft Open Technologies, Inc.

hosted

Data scheme

yes

schema-free

yes

support of semi-structured data formats (JSON, XML, Avro)

schema-free

Typing

predefined data types such as float or date

yes

partial

Supported data types are strings, hashes, lists, sets and sorted sets, bit arrays, hyperloglogs and geospatial indexes

yes

XML support info

Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.

yes

Secondary indexes

yes

with RediSearch module

SQL

Support of SQL

yes

APIs and other access methods

.Net
JDBC
ODBC
WebSocket

proprietary protocol info

RESP - REdis Serialization Protocol

CLI Client
JDBC
ODBC

C++ API
Java API

Supported programming languages

Java
Lua
Python
R

C
C#
C++
Clojure
Crystal
D
Dart
Elixir
Erlang
Fancy
Go
Haskell
Haxe
Java
JavaScript (Node.js)
Lisp
Lua
MatLab
Objective-C
OCaml
Pascal
Perl
PHP
Prolog
Pure Data
Python
R
Rebol
Ruby
Rust
Scala
Scheme
Smalltalk
Swift
Tcl
Visual Basic

JavaScript (Node.js)
Python

C++
Java

Server-side scripts info

Stored procedures

user defined functions

Lua

user defined functions

Triggers

yes

similar concept for controling cloud resources

Partitioning methods info

Methods for storing different data on different nodes

Sharding

yes

none

Replication methods info

Methods for redundantly storing data on multiple nodes

Master-slave replication info

Chained replication is supported
Multi-master replication info

with Redis Enterprise Pack

yes

none

MapReduce

Offers an API for user-defined Map/Reduce methods

yes

Hadoop integration

Consistency concepts info

Methods to ensure consistency in a distributed system

Immediate Consistency

Eventual Consistency
Strong eventual consistency with CRDTs

Immediate Consistency

Foreign keys info

Referential integrity

yes

Transaction concepts info

Support to ensure data integrity after non-atomic manipulations of data

ACID

Optimistic locking, atomic execution of commands blocks and scripts

ACID

Concurrency info

Support for concurrent manipulation of data

yes

Data access is serialized by the server

yes

Durability info

Support for making data persistent

yes

Configurable mechanisms for persistency via snapshots and/or operations logs

yes

In-memory capabilities info

Is there an option to define some or all structures to be held in-memory only.

yes

User concepts info

Access control

Access rights for users, groups and roles according to SQL-standard

Simple password-based access control info

Access control lists and SSL are available in the commercial version

Users with fine-grained authorization concept, user roles and pluggable authentication

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