tuesday, july 21, 2020
Next Monday, July 27th, I’ll be holding another live Q&A session, but this time, it’ll be ask me anything, without a predefined topic.
Whether you have a question about being a developer advocate, Java Champion, or coffee enthusiast, I’m looking forward to your questions.
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tuesday, july 21, 2020
When giving presentations, I usually don’t use slides, but a live-coding and live-demoing approach, with some minimalistic “editor-like” slides using VIM.
I’ve got asked many times how to make these presentations, so I decided to record a video how to create technical presentations in VIM, with ASCII art diagrams, colored highlights, and some scripting.
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saturday, july 18, 2020
I’ve recorded a video in which I’ll show how to perform database migrations in Quarkus applications using the Flyway Quarkus Extension.
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saturday, july 18, 2020
I’ve recorded a video how to migrate databases for applications that are deployed in a managed Kubernetes environment using Flyway and init containers.
In order to achieve zero-downtime deployments, we need to make sure that our persistence concept supports N-1 compatibility, which requires us to be able to migrate our database schemas, ideally from reproducible scripts stored in version control.
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wednesday, july 08, 2020
If you want JAX-RS to automatically convert parameters such as query params, path params, or others, you need to create a ParamConverter.
Primitive types, strings, and types who define certain conversion methods, such as a valueOf(String) method, are automatically converted.
Here’s how to define a converter for LocalDates.
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tuesday, june 30, 2020
When running enterprise applications with zero-downtime, we need to be able to perform database schema migrations without disrupting active users.
This is important not just for relational databases, but also for graph databases such as Neo4J, which don’t enforce a schema on write.
However, it still makes sense to refactor your graph and to keep your graph data model in sync with your application.
In the following video, I’ll explain how to migrate to schema versions defined by Cypher scripts which reside under version control, in a managed Kubernetes environment.
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wednesday, june 10, 2020
I’ll be holding another live Q&A session on the topic of developer productivity next Monday, June 15th.
In this session we’ll chat about how to be more productive as software developers, how to focus especially in these times, and how to make our jobs even more enjoyable.
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sunday, june 07, 2020
In the following video I’ll explain how to restore backups of Neo4J instances to a fresh instance that runs in a managed Kubernetes environment.
The backup contents will be taken from a persistent volume to which we previously wrote the backup.
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