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DevOps

Migrating InfluxDB from 0.9.6 to 0.10.0 GA

You may have already heard that InfluxDB 0.10 GA has been published a few days ago. In my case the most interesting improvement are the much higher compression rates: At the moment my co-workers of NeosIT and I are collecting Read more…

By Schakko, 10 years10 years ago
Java

Executing Liquibase database migrations from command line and as a shared Maven JAR

I am currently working on the migration of our time tracking system from Microsoft SQL Server/.NET to Java. Most of the logic resides in Stored Procedures and Stored Functions inside the database schema. Because of some reasons (testability, maintainability, migration Read more…

By Schakko, 10 years10 years ago
For Sale

Project idea: Nostradamus AKA prophetr – a social forecasting network for experts

From time to time some programming ideas come to my mind which I can not forget. I had often started a new project but due to my limited amount of free time it is hard to finish all of them. Read more…

By Schakko, 10 years10 years ago
Spring Framework

ExceptionHandler of @ControllerAdvice is not executed

It happened again: after writing about some issues caused by different JVM class-loader order a similar problem occured on Friday. One of my colleagues (Dev-A) asked me to look into a problem the team had. Because of unknown reasons the Spring Boot based Read more…

By Schakko, 10 years6 years ago
Java

How to fix NoSuchMethodError or NoSuchMethodException

Yesterday my team had the situation that a deployment failed with a NoSuchMethodError, specifically the method com/google/common/collect/ImmutableList.copyOf could not be found while querying the Confluence REST API. NoSuchMethodEror and NoSuchMethodException occur of obvious reasons: a method should be called during runtime Read more…

By Schakko, 10 years ago
DevOps

Collecting and visualizing metrics with statsd, InfluxDB and Grafana on Fedora 22

My employer NeosIT offers a web based SMS notifiyng solution for organizations with security roles named ZABOS. In the last months we extended the ZABOS application to support digital alerting through POCSAG. After some problems with a third party component Read more…

By Schakko, 11 years7 years ago
Linux

“configure: error: libpthread not found!” while configuring ActiveMQ CPP 3.8 and 3.9 on CentOS 6.7

The ./configure script of activemq-cpp for 3.8.x and 3.9 failed with the error configure: error: libpthread not found!” when running on CentOS 6.7. Stupidly i had forgotten to install the gcc-c++ package. “yum install gcc-c++” fixed everything. The error notification Read more…

By Schakko, 11 years ago
Linux

Slow RAID performance with our new Linux storage

During the last months we periodically experienced performance problems with our storage system. Investigating the cause for the slow performance was problematic as we did not have direct shell access and could only rely on crippled information from the web Read more…

By Schakko, 11 years11 years ago
Uncategorized

Wie ich einen HNO-Arzt in Wolfsburg suchte und IT-Probleme fand

In diesem Blog-Eintrag will ich meine Erkenntnisse schildern, die ich während meines Tinnitus gesammelt habe. For the non-german-readers of this blog: This blog post deals with the experiences I made during my tinnitus. Zur Vorgeschichte Am Dienstag vor genau zwei Read more…

By Schakko, 11 years ago
Laravel

Integration testing the mail dispatching in Laravel 5.1

When using the Mail facade in Laravel it is not so easy to test the output of the parsed mail template. Like http://stackoverflow.com/questions/31120567/unittesting-laravel-5-mail-using-mock I received the error Method Mockery_0__vendor_Swift_Mailer::getTransport() does not exist on this mock object. I ended up in Read more…

By Schakko, 11 years7 years ago

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Practical stuff apart from my work in system design and software architecture.
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