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Apache Accumulo vs. eXtremeDB IMDS

Apache Accumulo eXtremeDB IMDS + Add column
Apache Accumulo eXtremeDB In-Memory Database System
Preference (43% global votes) (71% global votes)
Website accumulo.​apache.​org www.​mcobject.​com/​extremedbfamily.​shtml
Database model
Data storage
Embeddable No Yes
Query language
Data types
Conditional entry updates Yes Yes
Map and reduce Yes No
Unicode Yes Yes
TTL for entries Yes Yes
Compression Yes Yes
Integrity model
Atomicity Conditional Yes
Consistency Yes Yes
Isolation Yes Yes
Durability (data storage) Yes Yes
Transactions No Yes
Referential integrity No No
Revision control Yes No
Locking model
Secondary Indexes Yes Yes
Composite keys Yes Yes
Full text search No No
Geospatial Indexes No Yes
Graph support Yes Conditional
Graph type ?
Horizontal scalable Yes Yes
Replication Yes Yes
Replication mode
Sharding Yes Yes
Shared nothing architecture Yes Yes
Value size max. 1 EB ?
System requirements
Operating system
Native driver
Memory minimum 8 GB 150 kB
Programming language
Description A distributed database featuring cell level security and server-side computation In-memory database system (IMDS) with options for persistence
Multi-user system Yes Yes
Extension/Plug-in Yes ?
Database ?
Multilingual content Yes ?
Price rating ★★★★★ ?
Multiple projects Yes ?
Standard compliance Yes Yes
Software distribution
Release Date September 2011 September 2001
Documentation level ★★★☆☆ ★★★☆☆
RESTful No ?
Distributed Counter Yes ?
Free to use Yes ?
Active Yes Yes
Database Connection Pooling Yes ?
Real time analytics Yes Yes
Community Driven Basic No
API Basic Good
Log Yes Yes
Implementation flexibility (50% global votes) (0% global votes)
Download accumulo.​apache.​org/​downloads/​ www.​mcobject.​com/​software_eval
Level of access authorization ?
Query Cache Yes No
Ease of use ★★★☆☆ ★★★☆☆
Free for commercial use Yes No
Sorts Yes Yes
Open Source Yes No
Perfomance ★★★★☆ ★★★★★
Server Side Java Script No No
Flexible Table(Schema) No Yes
Fully Distributed Yes ?
Stored Procedure No Yes
Concurrency Yes ?
Auto-Sharding Yes Yes
Free edition Yes No
Kafka Integration Yes ?
SQL Queries No ?
420 Friendly? Yes ?
Recursive queries No ?
CLI` Yes Yes
Hadoop Integration Yes ?
Object-Relational Mapping (ORM) ? No
Lines of code ? 206 k
Creation Date ? 2001
XML Aware ? Basic
Cloud platform support ?
Online backup ? Yes
Partial Index ? Yes
Function Based Index ? No
Backup functionality ? Good
In-Place Update ? Yes
Capped Collections ? Yes
Tuneable write concerns ? Yes
Read preferences ? Yes
Event Driven Architecture ? Yes
Triggers ? Yes
Pipeline Aggregation ? Yes
Spring Data Support ? No
Geospatial ? Yes
Corruption Resistant ? Yes
Number of systems in production ? 22 000 000
memcached protocol ? No
Does your mom understand it ? No
Trigram index ? Yes
Patricia Trie index ? Yes
kd-tree index ? Yes
More ? Yes
Point In Time Recovery ? Yes
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Apache Accumulo eXtremeDB IMDS
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