CREATE CAST: Casting integer to IP in PostgreSQL
How to store and process IP addresses in an efficient way. To do so PostgreSQL provides us with data types by casting integer.
The power of response times and execution time
The goal of the PostgreSQL optimizer is to provide a plan which executes as fast as possible & returns all the data as rapidly as possible.
Regular expressions unleashed in PostgreSQL
How to use an operator to work with regular expressions in PostgreSQL: includes list and a case-sensitive example. Fun with coding PostgreSQL
Bypassing the transaction log
When data is changed generally the change must be written to the xlog before it is written to the underlying table.
wal_level: What is the difference?
PostgreSQL replication requires changing the wal_level from “minimal” to “hot_standby”. What er the impacts? Read out more.
Logging - the hidden speedbrakes
When it comes to performance, people tend to forget some basic topics entirely. One of those topics is the impact of writing log files.
max_connections - Performance impacts
Setting max_connections to an insanely high value is not good for performance. I tried it, to see what impact it has in PostgreSQL.
Adjusting maintenance_work_mem
After testing shared_buffers recently, I decided to do a little more testing on our new office desktop PC (8 core […]
PostgreSQL 9.3 - Shared Buffers Performance (1)
A lot has been said about PostgreSQL shared buffers and performance. As my new desktop box has arrived this week […]
Detecting fraud: Benford's law
Benford's law is a mechanism, which is widely used in many fields. Especially accounting fraud can be detected nicely using this simple law of mathematics.
