Gerben Castel

Gemini, but the other one

Gerben Castel
6 Min To Read
28 Jan, 2025
- Open source and collaboration
- Web and mobile technology

Since the end of 2023, there has been constant talk about Google Gemini and its potential importance in the IT landscape. So I thought I should take an interest in Gemini, but since I don’t like to do things like everyone else, I’m going to focus on a Gemini that I’ve had on my radar for a few years: The Gemini Protocol, and you’ll see… it has nothing to do with Google.

Troubleshoot SSL/TLS mutual authentication with openssl s_server

Gerben Castel
4 Min To Read
07 Mar, 2023
- Cybersecurity

Each secure communication between a browser and a HTTP server begins with a SSL/TLS handshake.

Learning motivation: discover Rust with Zork

Gerben Castel
23 Min To Read
25 Oct, 2020
- Development and programming

To keep on renewing my computer skills, I try to get in touch with new frameworks, tools or languages regularly. But it can be hard to motivate yourself into learning something without a goal.

I …

In-place JVM memory analysis with jmap

Gerben Castel
5 Min To Read
26 Feb, 2018
- Development and programming

Diagnosing a java application for memory leaks or heavy resource consumption may involve the use of GUI tools such as JConsole or VisualVM. However, jmap , a small JDK tool may be very helpful.