bdr

A bit of the history as I've been told by 2nd Quadrant/EDB people (my teammates): BDR1 [0] came first and was, and is, open source. pgactive is based on BDR1. BDR2 was a closed-source rewrite of BDR1 that was later abandoned. pglogical v1 and v2 (PGL1, PGL2) were, and are, open-source [1]. pglogical v1, after heavy modification, was eventually merged into Postgres 10. Based on learnings from this logical replication in Postgres 10, 2nd Quadrant started pglogical v2. pgEdge is based on pglogical v2. Then later 2nd Quadrant started pglogical v3 (closed source) and BDR v3 (closed source). They were merged into just BDR v4. At some point the BDR product was renamed to Postgres Distributed (PGD) [2]. 2ndQuadrant was acquired by EDB. We (EDB) just released PGD v6. [0] https://github.com/2ndQuadrant/bdr/tree/bdr-plugin/REL1_0_ST... [1] https://g

as an example: https://github.com/dhamaniasad/awesome-postgres lists BDR which is deprecated according to https://github.com/2ndQuadrant/bdr, and links to https://2ndQuadrant.com/BDR/ for version 2, but this redirects to https://www.enterprisedb.com/ which does not seem to mention BDR at all. edit: by pure intuition i reached https://www.enterprisedb.com/docs/pgd/latest/ that seems to be the modern incarnation of BDR. It doesn't seem to mention licensing at all, so it's unclear if this thing is still open in any way that matters.

> (NEW! Postgres-BDR 2.0 on Server Version 9.6 Now Available!) 2ndQuadrant is proud to announce the availability of BDR 2.0 running as an extension to community PostgreSQL 9.6 for its support customers. You can now make full use of the additional features offered with PostgreSQL 9.6 while using Multi-Master Replication from BDR, fully backed by 2ndQuadrant’s world renowned 24/7 Production Support. Fill out the contact form below to get in touch with us. This suggests to me it's not really open to the public. And there is no release 2.0 on github (https://github.com/2ndQuadrant/bdr/releases). Feel free to correct me if I'm wrong and the 2.0 release is accessible without a 2ndquadrant support contract (or reverse engineering the changes from the github repo branch, which pretty much ensures you're never going to production with it), I'm gen

Some more information for anyone trying to understand this better: http://bdr-project.org/docs/stable/overview.html Sourcecode: https://github.com/2ndQuadrant/bdr

um, LICENSE? am I missing something https://github.com/2ndQuadrant/bdr

If someone is planning to use PostgreSQL as a NoSQL solution, one can use BDR (Bi-Directional Multi-Master Replication -> https://github.com/2ndQuadrant/bdr) and its global sequences (if needed). There are plenty of other replication solutions available for Postgres, indeed.