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RocksDB vs. LMDB

RocksDB LMDB + Add column
Category
Preference 25% votes 75% votes
Website rocksdb.​org symas.​com/​mdb
License
Design
Database model
Data storage
Embeddable Yes Yes
Features
Query language
Data types ?
Conditional entry updates ? No
Map and reduce Yes No
Unicode ? No
TTL for entries Yes No
Compression Yes No
Integrity
Integrity model ?
Atomicity Yes Yes
Consistency ? Yes
Isolation ? Yes
Durability (data storage) ? Yes
Transactions ? Yes
Referential integrity ? No
Revision control ? No
Locking model ?
Indexing
Secondary Indexes Yes No
Composite keys ? No
Full text search ? No
Geospatial Indexes ? No
Graph support ? No
Distribution
Horizontal scalable No No
Replication No No
Replication mode ?
Sharding ? No
Restrictions
Value size max. ? 4 GB
System requirements
Operating system ?
Native driver ?
Memory minimum ? 64 kB
Architecture
Programming language ?
More
Multi-user system No Yes
Free to use Yes Yes
Active Yes Yes
Free for commercial use Yes Yes
Open Source Yes Yes
Description ? Memory-Mapped, Copy-on-Write
Brand ?
Database ?
Price rating ? ★★★★★
Software distribution ?
Release Date ? September 2011
Documentation level ? ★★★★★
Lines of code ? 7 k
Real time analytics ? Yes
Creation Date ? 2009
Community Driven ? Good
API ? Basic
Online backup ? Yes
Function Based Index ? No
Implementation flexibility (0% global votes) (50% global votes)
Download ? gitorious.​org/​mdb
Backup functionality ? Good
Query Cache ? No
Ease of use ? ★★★★☆
In-Place Update ? Yes
Sorts ? Yes
Read preferences ? No
Maximum size ? 9.2 EB
Perfomance ? ★★★★★
JSON ? Yes
Batch Loading ? Yes
Corruption Resistant ? Yes
+ Add row ++
RocksDB LMDB
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