2UDA – New features in Orange (Part 2)

Orange is continuously being improved and made more friendly and useful for the users based on their feedback and experiences. Some new features were already described in Part 1 of...
January 12, 2016

On pglogical performance

A few days ago we released pglogical, a fully open-source logical replication solution for PostgreSQL, that’ll hopefully get included into the PostgreSQL tree in a not-too-distant future. I’m not going...
January 08, 2016

The Physics of Multi-Master

If you try to update the same data at the same time in multiple locations, your application has a significant problem, period. That’s what I call the physics of multi-master...
January 08, 2016

Performance of Sequences and Serials in Postgres-XL

In Postgres-XL, sequences are maintained at the Global Transaction Manager (GTM) to ensure that they are assigned non-conflicting values when they are incremented from multiple nodes. This adds significant overhead...
January 07, 2016

Why Logical Replication?

PostgreSQL has built-in streaming replication. Why do we need new replication? Well, in some cases, we do need more. Which is why we have pglogical. The existing replication is more...
January 06, 2016

2UDA RC1 - New features in Orange (Part 1)

The 2UDA installation package was updated recently to include the newly released PostgreSQL 9.5 RC1. Also found in the new package is an updated version of Orange bringing some new...
December 28, 2015

Joins Don't Scale!

“Joins Don’t Scale”. Well, that’s what I heard MongoDB said anyway. My response was “Huh? Yeh, they do”. So what gives? Who is right? Why the mixup? Well, first thing...
December 22, 2015

The End of MongoDB

On hearing news that MongoDB had lost half its value recently, the phrase “Half sunk” came to mind from Shelley’s Ozymandias. I met a traveller from an antique land Who...
December 10, 2015

Emulating row security in PostgreSQL 9.4

PostgreSQL 9.5 adds declarative row security. You can declare policies on tables and have them enforced automatically – for example, allowing user joe to only see rows with the owner...
December 09, 2015

Creating a PostgreSQL Service on Ubuntu

Ok, so you have a PostgreSQL distribution on your Ubuntu server. You have created the data directory and initialized the database. Now you want to run the server in a...
December 04, 2015