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DBMS > HarperDB vs. Memcached

System Properties Comparison HarperDB vs. Memcached

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Editorial information provided by DB-Engines
NameHarperDB  Xexclude from comparisonMemcached  Xexclude from comparison
DescriptionA DBMS for IoT projects, analytical and transactional use cases , runnable on IoT devices and in the cloud, in distributed and replicated environmentsIn-memory key-value store, originally intended for caching
Primary database modelDocument storeKey-value store
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score0.35
Rank#254  Overall
#36  Document stores
Score26.09
Rank#27  Overall
#4  Key-value stores
Websiteharperdb.iowww.memcached.org
Technical documentationdocs.harperdb.iogithub.com/­memcached/­memcached/­wiki
DeveloperHarperDBDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournal
Initial release20172003
Current release1.6.0, March 2020
License infoCommercial or Open Sourcecommercial infofree community edition availableOpen Source infoBSD license
Cloud-based only infoOnly available as a cloud servicenono
DBaaS offerings (sponsored links) infoDatabase as a Service

Providers of DBaaS offerings, please contact us to be listed.
Implementation languageNode.jsC
Server operating systemsLinux
OS X
FreeBSD
Linux
OS X
Unix
Windows
Data schemedynamic schemaschema-free
Typing infopredefined data types such as float or dateyes infoJSON data typesno
XML support infoSome form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.no
Secondary indexesyesno
SQL infoSupport of SQLSQL-like data manipulation statementsno
APIs and other access methodsJDBC
ODBC
RESTful HTTP/JSON API
Proprietary protocol
Supported programming languages.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
Server-side scripts infoStored proceduresnono
Triggersnono
Partitioning methods infoMethods for storing different data on different nodesA table resides as a whole on one (or more) nodes in a clusternone
Replication methods infoMethods for redundantly storing data on multiple nodesyes infothe nodes on which a table resides can be definednone infoRepcached, a Memcached patch, provides this functionallity
MapReduce infoOffers an API for user-defined Map/Reduce methodsnono
Consistency concepts infoMethods to ensure consistency in a distributed systemImmediate Consistency
Foreign keys infoReferential integritynono
Transaction concepts infoSupport to ensure data integrity after non-atomic manipulations of dataAtomic execution of specific operationsno
Concurrency infoSupport for concurrent manipulation of datayesyes
Durability infoSupport for making data persistentyes, using LMDBno
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.yes
User concepts infoAccess controlAccess rights for users and rolesyes infousing SASL (Simple Authentication and Security Layer) protocol

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More resources
HarperDBMemcached
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Recent citations in the news

HarperDB: It’s all about the (open) DBaaS
20 July 2020, ComputerWeekly.com

HarperDB Releases HarperDB Cloud
22 April 2020, PRNewswire

HarperDB and Dianomic Systems Collaborate to Enhance Edge Industrial Solutions
1 July 2020, PRNewswire

/C O R R E C T I O N -- HarperDB/
1 July 2020, Yahoo Finance

HarperDB: An underdog SQL / NoSQL database
7 February 2018, ZDNet

provided by Google News

Google Cloud launches a managed Memcached service
2 April 2020, TechCrunch

Google Cloud rolls out Memcached database caching – Blocks and Files
4 April 2020, Blocks and Files

Post Covid-19 Impact on Key Value Database Sales, Price, Revenue, Gross Margin and Market Share 2020 to 2026
26 October 2020, Eurowire

Buffer Overflow in Memcached Fixed | Decipher
24 March 2020, Decipher

Memcached 1.6 puts binary protocol to bed • DEVCLASS
9 March 2020, DevClass

provided by Google News

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