DBMS > etcd vs. PostgreSQL vs. TiDB
System Properties Comparison etcd vs. PostgreSQL vs. TiDB
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|Editorial information provided by DB-Engines|
|Name||etcd Xexclude from comparison||PostgreSQL Xexclude from comparison||TiDB Xexclude from comparison|
|Description||A distributed reliable key-value store||Widely used open source RDBMS Developed as objectoriented DBMS (Postgres), gradually enhanced with 'standards' like SQL||TiDB is an open source distributed SQL database that supports Hybrid Transactional/Analytical Processing (HTAP) workloads. It is MySQL compatible and features horizontal scalability, strong consistency, and high availability.|
|Primary database model||Key-value store||Relational DBMS with object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.||Relational DBMS|
|Secondary database models||Document store|
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|Developer||PostgreSQL Global Development Group www.postgresql.org/developer||PingCAP, Inc.|
|Initial release||1989 1989: Postgres, 1996: PostgreSQL||2016|
|Current release||3.4, August 2019||15.3, May 2023||7.0.0, March 2023|
|License Commercial or Open Source||Open Source Apache Version 2.0||Open Source BSD||Open Source Apache 2.0|
|Cloud-based only Only available as a cloud service||no||no||no|
|DBaaS offerings (sponsored links) Database as a Service|
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|TiDB Cloud: Fully-managed TiDB Service. Bring everything great about TiDB to the cloud.|
|Implementation language||Go||C||Go, Rust|
|Server operating systems||FreeBSD|
|Typing predefined data types such as float or date||no||yes||yes|
|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.||no||yes specific XML-type available, but no XML query functionality.||no|
|SQL Support of SQL||no||yes standard with numerous extensions||yes|
|APIs and other access methods||gRPC|
JSON over HTTP
native C library
streaming API for large objects
|Supported programming languages||.Net|
|Server-side scripts Stored procedures||no||user defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.||no|
|Triggers||yes, watching key changes||yes||no|
|Partitioning methods Methods for storing different data on different nodes||partitioning by range, list and (since PostgreSQL 11) by hash||horizontal partitioning (by key range)|
|Replication methods Methods for redundantly storing data on multiple nodes||Using Raft consensus algorithm to ensure data replication with strong consistency among multiple replicas.||Source-replica replication other methods possible by using 3rd party extensions||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||yes with TiSpark Connector|
|Consistency concepts Methods to ensure consistency in a distributed system||Immediate Consistency||Immediate Consistency||Immediate Consistency|
|Foreign keys Referential integrity||no||yes||yes full support since version 6.6|
|Transaction concepts Support to ensure data integrity after non-atomic manipulations of data||no||ACID||ACID|
|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||no||no|
|User concepts Access control||no||fine grained access rights according to SQL-standard||Fine grained access rights according to SQL-standard|
|More information provided by the system vendor|
|Specific characteristics||TiDB is an open-source NewSQL database built by PingCAP. TiDB supports Hybrid Transactional...|
|Competitive advantages||In the current database landscape, infrastructure engineers often have to use one...|
|Typical application scenarios||TiDB is designed to support both OLTP and OLAP scenarios. You can use TiDB , the...|
|Key customers||Shopee (E-commerce) BookMyShow.com (E-commerce) Yiguo.com (E-commerce) JD Cloud &...|
|Market metrics||25K+ GitHub Stars for TiDB, and 8K+ GitHub Stars for TiKV 1.6K+ members in TiDB Community...|
|Licensing and pricing models||Open Source Apache 2.0 with either commercial licensing or fully-hosted DB-as-a-service...|
We invite representatives of system vendors to contact us for updating and extending the system information,
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