In my Spring Boot 3 application that hosts an API I wanted to have some entries highly used but rarely changed entries in a second level cache. In the past I was usind hibernate-ehcache but that project seems to be dead. The replacement for it is hibernate-jcache. First attempt was to use ehcache backing the […]
Hibernate Second Level Cache with Spring Boot 3 and Redis Read More »
Using Spring Events can be very handy to decouple code. But have you ever tried creating generic events and then write a listener for them? Java or Kotlin themselves don’t prevent you from doing so but when you try receiving the events you will see that it doesn’t work. The reason for this is type
Using Generic Spring Boot Events Read More »
With Spring Boot 3 some classes were deprecated and also the Keycloak adapter and the admin client stopped working in an application I am maintaining. In https://blog.coffeebeans.at/archives/1904 I already showed how to instantiate a WebClient which is the new way Spring wants us to call external APIs – not considering external libs like feign now.
OAuth2 client with Spring Boot 3 Read More »
RestTemplate is dead and everybody should use WebClient now. That’s what you find everywhere so I had a look how to configure an instance of WebClient properly: This defines a bean genericWebClient with Spring Boot configured Jackson ObjectMapper instance. Here is also the code for the WebClientLoggerBuilder: This simply logs method, path and headers of
Spring Boot WebClient with request logging Read More »
Docker wants to bill companies for Docker Desktop. In my opinion it’s not worth it because there are multiple options how to replace it without the need to really change habits. Here the statement taken from Docker FAQ regarding payment for Docker Desktop: Who’s required to pay for Docker Desktop? Docker Desktop requires a paid,
Replace docker with podman on MacOS Read More »
The following time code generation is based on real time clocks synced with ntp on mac or linux computers using UTC time. Make sure your machine has an internal clock source otherwise the time drift will be too big. This approach is a very cheap way to get proper time code into cameras. If your
Simply delete the folder <user>/Library/Application Support/REAPER.
Reset reaper on a mac Read More »
As it was quite hard to find a proper command to replace all empty lines within a text file – including empty lines at the start and end – I wanted to take down the following command which worked for me on macOS:
Remove blank lines within a file with bash Read More »
While using Java and Kotlin with Spring Boot the following exception occurs and it’s quite hard to find how to fix it. The simple solution is to add the following top level config in your gradle file:
duplicate but no duplicate handling strategy has been set – gradle DuplicationStrategy Read More »
Following the documentation using arkade was (as stated in the docs) the fastest and easiest way to get a working local installation running. There are numerous outdated tutorials about how to run OpenFaaS locally but none of really worked in my envrionment. I am using a MacBook M1 Max with docker driver. I have docker
Local OpenFaaS environment with minikube and docker driver Read More »