DBMS > Amazon CloudSearch vs. Brytlyt vs. etcd
System Properties Comparison Amazon CloudSearch vs. Brytlyt vs. etcd
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|Editorial information provided by DB-Engines|
|Name||Amazon CloudSearch Xexclude from comparison||Brytlyt Xexclude from comparison||etcd Xexclude from comparison|
|Description||A hosted search engine service by Amazon with the data stored in Amazons cloud||Scalable GPU-accelerated RDBMS for very fast analytic and streaming workloads, leveraging PostgreSQL||A distributed reliable key-value store|
|Primary database model||Search engine||Relational DBMS||Key-value store|
|Current release||0.9, October 2016||3.4, August 2019|
|License Commercial or Open Source||commercial||commercial||Open Source Apache Version 2.0|
|Cloud-based only Only available as a cloud service||yes||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|Implementation language||C, C++ and CUDA||Go|
|Server operating systems||hosted||Linux|
|Typing predefined data types such as float or date||yes||yes||no|
|XML support Some form of processing data in XML format, e.g. support for XML data structures, and/or support for XPath, XQuery or XSLT.||yes specific XML-type available, but no XML query functionality.||no|
|Secondary indexes||yes all search fields are automatically indexed||yes||no|
|SQL Support of SQL||no||yes||no|
|APIs and other access methods||HTTP API||ADO.NET|
native C library
streaming API for large objects
JSON over HTTP
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||no||user defined functions in PL/pgSQL||no|
|Triggers||no||yes||yes, watching key changes|
|Partitioning methods Methods for storing different data on different nodes||yes automatic partitioning across Amazon Search Instance as required|
|Replication methods Methods for redundantly storing data on multiple nodes||yes managed transparently by AWS||Source-replica replication||Using Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.|
|MapReduce Offers an API for user-defined Map/Reduce methods||no||no||no|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||yes||no|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID||no|
|Concurrency Support for concurrent manipulation of data||yes||yes||yes|
|Durability Support for making data persistent||yes||yes||yes|
|In-memory capabilities Is there an option to define some or all structures to be held in-memory only.||no|
|User concepts Access control||authentication via encrypted signatures||fine grained access rights according to SQL-standard||no|
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