PostgreSQL

PostgreSQL on AWS Graviton2: CFLAGS

By Franck Pachot . In a previous post I’ve compiled PostgreSQL with GCC 7 and GCC 11 with the default options and checked that the ARM v8.2 features were used. However it may not be so simple:(…)

Delphix and upgrading the clones (Oracle)

By Franck Pachot . Delphix is a tool for easy cloning of databases. The idea is that all is automated: the user can create a clone, rewind or refresh it with one click. However, I was suprised that the(…)

Pass a variable to a trigger in PostgreSQL

By Franck Pachot . With Oracle there are many ways to set a state in the session: context variables, set with DBMS_SESSION.SET_CONTEXT and retrieved with SYS_CONTEXT, or package global variables, or global or private temporary tables with ON COMMIT(…)

K8s on Windows/VirtualBox

By Franck Pachot . This is a little demo, easy to copy-paste, if you want to play with Kubernetes on your laptop. And, not a simple “Hello World” but a real database running here, able to scale up and(…)

Should CPU-intensive logic be done in the DB or in application server?

By Franck Pachot . Should CPU-intensive logic be done in the DB or in application server? Here was a answer found in Reddit: Comment byu/CacheMeUp from discussion inPostgreSQL Reducing the(…)

Foreign Keys in MySQL, SQL, NoSQL, NewSQL

By Franck Pachot . In the NoSQL times, it was common to hear thinks like “SQL is bad”, “joins are bad”, “foreign keys are bad”. Just because people didn’t know how to use them, or they were running on(…)

AWS: PostgreSQL on Graviton2 with newer GCC

By Franck Pachot . In the previous post I have run PostgreSQL on AWS m6gd.2xlarge (ARM Graviton2 processor). I didn’t precise the compilation option and this post will give more details following this feedback:(…)

AWS: PostgreSQL on Graviton2

By Franck Pachot . On the AWS free tier, you can run a t2.micro instance for 750 hours per month during the first 12 month after sign-up date. And currently, until June 2021, you can also run a(…)

PostgreSQL on Linux: what is cached?

By Franck Pachot . In a recent tweet I wanted to highlight the importance of knowing what you measure with pgbench, because looking at “Transactions per second” without knowing if you are in shared buffer cache hits, or filesystem(…)

Microsoft Flexible Server for PostgreSQL

This Blog is about some findings on Microsoft’s new Flexible Server offering for PostgreSQL which is in Customer Preview at the moment. Findings about the infrastructure The Microsoft Flexible Server for PostgreSQL is using Ubuntu as OS infrastructure, I think(…)