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DBMS > Memcached vs. QuestDB

System Properties Comparison Memcached vs. QuestDB

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Our visitors often compare Memcached and QuestDB with MySQL, PostgreSQL and Microsoft SQL Server.

Editorial information provided by DB-Engines
NameMemcached  Xexclude from comparisonQuestDB  Xexclude from comparison
DescriptionIn-memory key-value store, originally intended for cachingA high performance, low latency Time Series DBMS
Primary database modelKey-value storeTime Series DBMS
Secondary database modelsRelational DBMS
DB-Engines Ranking infomeasures the popularity of database management systemsranking trend
Trend Chart
Score25.96
Rank#27  Overall
#4  Key-value stores
Score0.25
Rank#265  Overall
#20  Time Series DBMS
Websitewww.memcached.orgwww.questdb.io
Technical documentationgithub.com/­memcached/­memcached/­wikiwww.questdb.io/­docs/­documentationOverview
DeveloperDanga Interactive infooriginally developed by Brad Fitzpatrick for LiveJournalQuestDB Limited
Initial release20032014
Current release1.6.0, March 2020
License infoCommercial or Open SourceOpen Source infoBSD licenseOpen Source infoAGPL 3.0
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 languageCJava
Server operating systemsFreeBSD
Linux
OS X
Unix
Windows
Linux
macOS
Windows
Data schemeschema-freeyes
Typing infopredefined data types such as float or datenoyes
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 indexesnono
SQL infoSupport of SQLnoSQL-like query language
APIs and other access methodsProprietary protocolHTTP REST
Supported programming languages.Net
C
C++
ColdFusion
Erlang
Java
Lisp
Lua
OCaml
Perl
PHP
Python
Ruby
Java
Server-side scripts infoStored proceduresnono
Triggersnono
Partitioning methods infoMethods for storing different data on different nodesnonehorizontal partitioning (by timestamps)
Replication methods infoMethods for redundantly storing data on multiple nodesnone infoRepcached, a Memcached patch, provides this functionallitynone
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 datanoACID for single-table writes
Concurrency infoSupport for concurrent manipulation of datayesyes
Durability infoSupport for making data persistentnoyes
In-memory capabilities infoIs there an option to define some or all structures to be held in-memory only.no
User concepts infoAccess controlyes infousing SASL (Simple Authentication and Security Layer) protocol

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More resources
MemcachedQuestDB
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Recent citations in the 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

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

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

Researchers earn $2.5k bug bounty after exposing credentials in Iranian app Cafe Bazaar
7 July 2020, The Daily Swig

provided by Google News

QuestDB nabs $2.3M seed to build open source time series database
2 July 2020, TechCrunch

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27 July 2020, WRAL Tech Wire

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22 June 2020, Yahoo Finance

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25 June 2020, Yahoo Finance

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1 June 2020, Yahoo Finance

provided by Google News

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