-
Blue/Green Deployments to Pivotal Cloud Foundry using Gradle
Blue/Green deployments are a method of deploying with zero downtime. This is possible on Pivotal’s CloudFoundry using either the CLI, Maven, or Gradle. Matt Stine wrote earlier on this topic how to do blue/green deployments using the CLI.
-
My JavaLand 2016 Summary
The last two days, 08.03 – 09.03.2016, I attended JavaLand 2016. I was lucky having a talk about „What’s New in CDI 2.0“ and it was great for me. This year JavaLand came up with a Newcomer track for speakers that didn’t speak at a larger conference before. We were 10 speakers, each having a…
-
Iterate over all keys in a Redis Cluster
Redis provides a neat command to iterate over all keys on a node. It’s the SCAN command that is used to scan over keys and to return a cursor to resume then the scanning from the cursor position. Complexity comes in when using Redis Cluster. In the previous scenario, all keys are located on one…
-
Redis transactions
Redis transactions allow to group multiple commands and to execute them sequentially. The whole transactional state is isolated from other users and becomes visible once a transaction is committed. A Redis transaction is different from transactions in, let’s say, relational databases. A Redis transaction feels more like a queue/stack of commands because commands are queued…
-
Hello, Pivotal
I consider myself very lucky for contributing to the open source space. Open source is one of the main building blocks of our digital world. For me, contributing is sharing, and sharing is giving back. I started contributing in early 2011. Transparency, quality, and purpose are my main reasons for my open source involvements. That…
-
Redis Client lettuce 3.4 and 4.1 Final released
I just released lettuce 3.4.Final and lettuce 4.1.Final. You can find the full details about 3.4.Final and 4.1.Final on Github. These release contain numerous features and bugfixes. Lettuce introduces reusable client-resources, an EventBus, client metrics, and support for newly introduced commands. This versions work with Redis 3.2 RC3 but Redis expects a change in the…
-
Geometric Brownian motion with Java
The Wiener process is a continuous-time stochastic process named in honor of Norbert Wiener. It’s commonly used to represent noise or financial development with a random component. The geometric brownian motion can be calculated to visualize certain bounds (in quantiles) to hint about the absolute range.
-
MIDI and Live Video Streaming at Heckenlights
At its heart, Heckenlights relies on MIDI and Live Video Streaming technologies to bring the live experience to website visitors. Let me tell you today how MIDI and Live Video Streaming is done at Heckenlights.
-
Halloween on Arduino Aftermath
The plan for this year’s Halloween: Built a scary thingy based on Arduino. Halloween is over now. I built an Arduino-backed jack-o’-lantern with LED matrix panel eyes, an ultrasonic ranging sensor for the nose and a sound module to play scary Halloweenish sounds. It is impressive to see the whole thing assembled. They eyes move…
-
Redis Client lettuce 3.3.1 and 4.0 Final released
I just released lettuce 3.3.1.Final and lettuce 4.0.Final. I’m going to tell you in this post more about 4.0. You can find the full details about 3.3.1.Final and 4.0.Final on Github. lettuce 4.0 is a major release that introduces numerous changes like stateful connections, the reactive API and many more. Lettuce 4.0 includes all features…