credativ® Blog
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Tag: planetpostgresql
26 May 2026
The PostgreSQL Conference HOW2026 in Jinan, China
At the end of April, I had the incredible opportunity to represent credativ on the HOW2026 (Hello Open-source World), the PostgreSQL & IvorySQL Eco Conference in Jinan, China. IvorySQL is a Chinese fork of PostgreSQL with extended Oracle compatibility. In recent years, it has been gaining popularity not only in China. The conference brought together […]
06 January 2026
Dissecting PostgreSQL Data Corruption
PostgreSQL 18 made one very important change – data block checksums are now enabled by default for new clusters at cluster initialization time. I already wrote about it in my previous article. I also mentioned that there are still many existing PostgreSQL installations without data checksums enabled, because this was the default in previous versions. […]
15 December 2025
PostgreSQL 18 Asynchronous Disk I/O - Deep Dive Into Implementation
PostgreSQL 17 introduced streaming I/O – grouping multiple page reads into a single system call and using smarter posix_fadvise() hints. That alone gave up to ~30% faster sequential scans in some workloads, but it was still strictly synchronous: each backend process would issue a read and then sit there waiting for the kernel to return […]
05 December 2025
A deeper look at old UUIDv4 vs new UUIDv7 in PostgreSQL 18
In the past there have been many discussions about using UUID as a primary key in PostgreSQL. For some applications, even a BIGINT column does not have sufficient range: it is a signed 8‑byte integer with range −9,223,372,036,854,775,808 to +9,223,372,036,854,775,807. Although these values look big enough, if we think about web services that collect billions […]
10 November 2025
Representing credativ at PostgreSQL Conference Europe 2025
The European PostgreSQL Conference (PGConf.EU) is one of the largest PostgreSQL events worldwide. In this year it was held 21–24 October in Riga, Latvia. Our company, credativ GmbH, was a bronze sponsor of the conference, and I had the privilege to represent credativ with my talk “Database in Distress: Testing and Repairing Different Types of […]