Postgres-XL

Last updated
Postgres-XL
Repository git.postgresql.org/gitweb/?p=postgres-xl.git
Type Distributed relational database management system
License PostgreSQL License [1]
Website www.postgres-xl.org

Postgres-XL is a distributed relational database management system (RDBMS) software based on PostgreSQL. It aims to provide feature parity with PostgreSQL while distributing the workload over a cluster. The name "Postgres-XL" stands for "eXtensible Lattice". [2]

Contents

Postgres-XL is based on Postgres-XC, an earlier distributed PostgreSQL system developed by NTT Data and EnterpriseDB. [3] In 2012, the cloud database startup StormDB [4] adopted Postgres-XC and developed some proprietary extensions and improvements to it. [5] In 2013, StormDB was acquired by TransLattice, [5] [6] and the improved software was open-sourced under the name "Postgres-XL" in 2014. [7] [8] Since 2015, Postgres-XL development has also been supported by 2ndQuadrant. [3]

Postgres-XL provides cluster-wide consistent transaction snapshots [9] [10] via a central Global Transaction Manager (GTM) node. It requires a fast interconnect between nodes, so Postgres-XL is not suited to geographically distributed clusters. Larger queries can be split and parallelized between multiple nodes. [10] Individual database tables can be chosen to be fully replicated across the cluster (usually for smaller tables) or sharded between separate nodes (for write scalability). [11]

See also

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References

  1. ↑ "Frequently Asked Questions - Postgres-XL". www.postgres-xl.org.
  2. ↑ "Frequently Asked Questions". Postgres-XL. Retrieved 31 May 2017.
  3. 1 2 "A Brief History of PostgreSQL: Postgres-XL". Postgres-XL documentation. Retrieved 31 May 2017.
  4. ↑ Butler, Brandon (4 June 2014). "10 of the most useful cloud databases". Network World. Archived from the original on December 26, 2015.
  5. 1 2 Clark, Jack (10 October 2013). "TransLattice gobbles StormDB upstart for Postgres threesome". The Register .
  6. ↑ Harris, Derrick (9 October 2013). "Cloud database consolidation as TransLattice buys StormDB". Gigaom.
  7. ↑ Clark, Jack (13 May 2014). "'Behold my creation: Postgres-XL' bellows TransLattice". The Register.
  8. ↑ Harris, Derrick (13 May 2014). "Database vendor open sources Postgres-XL for scale-out workloads". Gigaom.
  9. ↑ "TransLattice Unveils Postgres-XL Open Source Database for OLTP and Big Data Analytics". Database Trends and Applications. 16 May 2014.
  10. 1 2 Baker, Jason (13 May 2014). "Postgres-XL released to tackle big data analytics and more". Opensource.com.
  11. ↑ Riggs, Simon; Ciolli, Gianni; Krosing, Hannu; Bartolini, Gabriele (30 April 2015). PostgreSQL 9 Administration Cookbook - Second Edition. Packt Publishing Ltd. p. 418. ISBN   9781849519076.
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