Some time ago, I posted some information about zheap, a storage engine for PostgreSQL. The idea behind zheap is to make UPDATE statements run faster in order to keep table bloat under control. Currently, PostgreSQL copies data on UPDATE and puts the copy of the row into the same data file. While this isn’t a […]

zheap has been designed as a new storage engine to handle UPDATE in PostgreSQL more efficiently. A lot has happened since my last report on this important topic, and I thought it would make sense to give readers a bit of a status update – to see how things are going, and what the current […]

Bulk loading is the quickest way to import large amounts of data into a PostgreSQL database. There are various ways to facilitate large-scale imports, and many different ways to scale are also available. This post will show you how to use some of these tricks, and explain how fast importing works. You can use this […]

To dig a bit deeper into zheap and PostgreSQL storage technology in general I decided to provide some more empirical information about space consumption. As stated in my previous blog post about zheap is more efficient in terms of storage consumption. The reasons are: The tuple header is much smaller Alignment has been improved The […]

In PostgreSQL table bloat has been a primary concern since the original MVCC model was conceived. Therefore we have decided to do a series of blog posts discussing this issue in more detail. What is table bloat in the first place? Table bloat means that a table and/or indexes are growing in size even if […]