Validation on Micha Kops' Tech Notes

Avro Schema Compatibility and the Confluent Schema Registry

Sun, 08 Jun 2025 00:00:00 +0200

What is Schema Compatibility?

Schema compatibility ensures that data serialized by a producer using one schema can be deserialized by a consumer using another. The Confluent Schema Registry provides several compatibility modes to enforce these rules when updating schemas.

There are two key directions of compatibility:

Backward Compatibility (Upward Compatibility): Old consumers can read data produced with a newer schema.
Forward Compatibility (Downward Compatibility): New consumers can read data produced with an older schema.

Fast Link Checks using Filiph Linkchecker and Docker

Mon, 02 May 2022 00:00:00 +0200

This Linkchecker claims to be way faster than blc and wummel/linkchecker.

Using Docker, we may validate our site’s links in no time and without complex setup.

docker run --rm tennox/linkcheck hascode.io

Resources

https://github.com/filiph/linkcheck

Software Architecture Exploration and Validation with jqAssistant, Neo4j and Cypher

Sun, 31 Dec 2017 00:00:00 +0100

I have written about other software system analyzing and validation tools before but today I would like to introduce a new tool named jqAssistant that supports software architects, developers and analysts in a variety of tasks like analyzing given structures, validating architectural or quality constraints and generating reports.

Therefore jqAssistant analyzes given projects or artifacts and stores the gathered information – that is enriched by a variety of existing plugin-ins – in a Neo4j graph database.

Bean Validation with JSR-303 and Hibernate Validator

Tue, 14 Dec 2010 00:00:00 +0100

You want to add some validation logic to your Java beans? You want to achieve this with some shiny extendable annotations? Then give the Java Bean Validation standard aka JSR-303 a try..

We’re going to use the reference implementation for bean validation, Hibernate Validator in this tutorial but there are also links to other alternatives like Oval or Apache Bean Validation.

So let’s begin and validate some stuff ..

Prerequisites

JDK >=6
Maven >=2
An IDE or text editor of choice