Ralph Schaer
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Ralph Schaer
@me.rasc.ch
9 followers 14 following 20 posts
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Getting started with MQTT using Java and Go
blog.rasc.ch/2025/08/mqtt...

#mqtt #java #go
November 11, 2025 at 8:29 AM
Methanol: Make it easier to work with Java's HTTP Client

blog.rasc.ch/2025/08/meth...

#java
November 10, 2025 at 8:36 AM
Exploring the Go slices and maps packages

blog.rasc.ch/2025/07/go-s...

#golang
November 9, 2025 at 7:16 AM
MongoDB Schema Validation with Java

blog.rasc.ch/2025/07/mong...

#mongodb #java
November 8, 2025 at 4:30 AM
A look at Xodus, an embedded database for Java

blog.rasc.ch/2025/07/xodu...

#java #xodus #embeddeddb
November 7, 2025 at 1:12 PM
A look at the cache support in Spring Boot

blog.rasc.ch/2025/07/spri...

#spring #java
November 6, 2025 at 3:45 AM
Faster S3 object listing with the help of prefixes

blog.rasc.ch/2025/07/s3-f...

#aws #go
November 5, 2025 at 10:11 AM
Build a RAG workflow with Spring AI

blog.rasc.ch/2025/07/spri...

#springai #spring #java
RAG with Spring AI
For a traditional RAG system, we need a vector database to store the embeddings of the text chunks, a model to generate the embeddings, and a LLM to generate the responses.
blog.rasc.ch
November 4, 2025 at 3:02 AM
Maps in web applications with MapTiler:
blog.rasc.ch/2025/07/mapt...

www.maptiler.com

#javascript #maptiler
Embedding maps with MapTiler in a web application
In a previous blog post, I showed you how to write a web application that displays photos on a map. The article demonstrated how to extract GPS coordinates and then display a marker for each photo on Google Maps.
blog.rasc.ch
November 3, 2025 at 7:12 AM
Track entity changes with JaVers:
blog.rasc.ch/2025/07/jave...

#java #javers

javers.org
JaVers — The Leading Framework for Object Audit and Diff in Java
With JaVers you can forget about troublesome data versioning. Let the changes in your data be managed by JaVers.
javers.org
November 2, 2025 at 5:58 AM
Create and deploy an Angular/Ionic app with a PocketBase backend

blog.rasc.ch/2025/07/pock...
blog.rasc.ch/2025/07/pock...

#ionic #angular #pocketbase
November 1, 2025 at 6:28 AM
Writing a Reply Bot for Bluesky in Go

#bluesky #go #replybot

blog.rasc.ch/2025/07/blue...
Writing a Reply Bot for Bluesky in Go
To mention someone on Bluesky, you insert the @ symbol followed by their handle into the post. The mentioned user will receive a notification that they have been mentioned.
blog.rasc.ch
October 31, 2025 at 5:12 AM
Setting up infrastructure on Hetzner with Pulumi.
WireGuard on a Hetzner VPS with Pulumi

#hetzner #pulumi #wireguard

blog.rasc.ch/2025/07/pulu...
Provision Resources on Hetzner Cloud with Pulumi
Published: 16. July 2025  •  iac
blog.rasc.ch
October 30, 2025 at 5:02 AM
ShedLock - Prevent Concurrent Execution of Scheduled Methods in Spring Boot

blog.rasc.ch/2025/07/shed...

#java #spring
ShedLock - Prevent Concurrent Execution of Scheduled Methods in Spring Boot
Spring and Spring Boot make it straightforward to schedule tasks. You only need to enable scheduling support with the @EnableScheduling annotation, and then you can use the @Scheduled annotation to schedule any method to run at a fixed rate, with a fixed delay, or at a specific time.
blog.rasc.ch
October 29, 2025 at 9:22 AM
Sending Bluesky posts with Go

golb.hplar.ch/2025/02/blue...
Writing a Go program that posts to Bluesky
golb.hplar.ch
February 23, 2025 at 7:06 PM
Tool/Function Calling with Spring AI - golb.hplar.ch/2025/01/spri...
Tool/Function Calling with Spring AI
golb.hplar.ch
February 9, 2025 at 5:36 PM
Speech Recognition in the Browser with Transformers.js - golb.hplar.ch/2025/01/tran...
Speech Recognition in the Browser with Transformers.js
golb.hplar.ch
February 9, 2025 at 5:36 PM
Implementing WebAuthn Authentication with Bitwarden Passwordless.dev - golb.hplar.ch/2025/01/weba...
Bitwarden Passwordless.dev - Passwordless Authentication | Bitwarden
Embrace passkey & passwordless authentication with Bitwarden Passwordless.dev, empowering devs to build seamless login experiences with standard FIDO passkeys.
Passwordless.dev
February 9, 2025 at 5:36 PM
Running LLM-Generated Go Code in a Docker Container - golb.hplar.ch/2025/01/llmg...
Running LLM-Generated Go Code in a Docker Container
golb.hplar.ch
February 9, 2025 at 5:36 PM