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LMDB vs. Riak

LMDB Riak + Add column
Category
Preference (55% global votes) (43% global votes)
Website symas.​com/​mdb docs.​basho.​com
License
Design
Database model
Data storage
Embeddable Yes No
Features
Query language
Data types
Conditional entry updates No No
Map and reduce No Yes
Unicode No Yes
TTL for entries No Yes
Compression No Yes
Integrity
Integrity model
Atomicity Yes No
Consistency Yes Yes
Isolation Yes Yes
Durability (data storage) Yes Yes
Transactions Yes No
Referential integrity No No
Revision control No Yes
Locking model No
Indexing
Secondary Indexes No Yes
Composite keys No Yes
Full text search No Yes
Geospatial Indexes No No
Graph support No No
Distribution
Horizontal scalable No Yes
Replication No Yes
Replication mode
Sharding No ?
Shared nothing architecture ? Yes
Restrictions
Value size max. 4 GB 64 MB
System requirements
Operating system
Native driver
Memory minimum 64 kB 4 GB
Architecture
Programming language
More
Description Memory-Mapped, Copy-on-Write High performance key-value/document store.
Brand
Multi-user system Yes Yes
Database
Price rating ★★★★★ ?
Software distribution
Release Date September 2011 17ᵗʰ August 2009
Documentation level ★★★★★ ★★★★★
Lines of code 7 k 4.5 k
Free to use Yes Yes
Active Yes Yes
Real time analytics Yes Yes
Creation Date 2009 17ᵗʰ November 2009
Community Driven Good Good
API Basic Good
Online backup Yes Yes
Function Based Index No ?
Implementation flexibility (50% global votes) (67% global votes)
Download gitorious.​org/​mdb basho.​com/​resources/​downloads/​
Backup functionality Good Good
Query Cache No Yes
Ease of use ★★★★☆ ★★★★★
In-Place Update Yes Yes
Free for commercial use Yes Yes
Sorts Yes Yes
Read preferences No Yes
Open Source Yes Yes
Maximum size 9.2 EB ?
Perfomance ★★★★★ ★★★★★
JSON Yes Yes
Batch Loading Yes ?
Corruption Resistant Yes ?
Standard compliance ? No
RESTful ? Yes
Distributed Counter ? Yes
Database Connection Pooling ? Yes
Web interface ? No
Cloud platform support ?
Log ? Yes
Siblings ? Yes
Tuneable write concerns ? Yes
Flexible Table(Schema) ? Yes
Geo-distributed ? Yes
Re-Reduce ? Yes
Free edition ? Yes
Monitoring UI ? Yes
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LMDB Riak
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