ctop – manage and monitor your Docker containers
12/17/18
ctop is a command line tool that lets you easily monitor and manage your Docker containers. I will show you the most important features. Read more
Posts by Tobias Trelle
Leaflet und GeoJSON-Daten
06/12/18
In diesem Tutotrial erkläre ich, wie man mit dem der JavaScript-Bibliothek Leaflet GeoJSON-Datein in eigenen Web-Anwendungen darstellen kann. Read more
Google Cloud Function for Machine Learning
05/22/18
In this post I'll show you how to use a Google Cloud Function to access the machine learning API for natural language processing. Cloud functions are one of the serverless features of the GCP. Read more
Google Cloud Natural Language API
05/07/18
In this article I'd like to give you a short introduction to a subset of Google's machine learning capabilities: the natural language API. Read more
Google Maps API und GeoJSON-Daten
04/16/18
Dieses Tutorial erklärt, wie man mit dem Google Maps JavaScript API Geo-Daten im GeoJSON-Format darstellen kann. Read more
RESTful Microservices on the Google Cloud Platform
04/09/18
This tutorial shows you how to develop a RESTful microservice running on the Google Cloud Platform. Read more
GeoJSON Tutorial
03/19/18
In diesem Tutorial zeige ich, was Geodaten sind und wie man diese im GeoJSON-Format verwaltet und visualisiert. Read more
Cloud Launcher for MongoDB in the Google Compute Engine
03/05/18
In this tutorial you will learn how to use Google's Cloud Launcher to set up instances for a MongoDB replica set in the Google Compute Engine. Read more
Deploying Spring Boot Applications in the Google AppEngine Flex Environment
02/13/18
This tutorial shows how to set up a deployment of Spring Boot applications for the Google AppEngine Flex environment. Read more
EX-Raid-Arenen in Pokémon GO identifizieren
02/05/18
Datamining mit Geodaten: ein Tutorial zur Identifikation potentieller Ex-Raid Arenen im Augmented-Reality-Spiel Pokemon Go. Read more
Change Streams in MongoDB 3.6
01/15/18
MongoDB 3.6 introduces an interesting API enhancement called change streams. With change streams you can watch for changes to certain collections by means of the driver API. Read more
Spring Cloud Service Discovery with Dynamic Metadata
01/08/18
Spring Cloud Service Discovery If you are running applications consisting of a lot of microservices depending on each other, you... Read more
Lego WeDo 2.0 Programmierung
10/19/17
Den Lego WeDo 2.0 Bausatz habe ich in bereits in einem ersten Post vorgestellt. Im heutigen Beitrag möchte ich genauer... Read more
JUnit 5 – Des Kaisers neue Kleider
10/02/17
JUnit 5 ist im September 2017 in der ersten stabilen Version erschienen. In diesem Post möchte ich Euch die wichtigsten neuen Features vorstellen. Read more
Unboxing Lego WeDo 2.0 Roboter Bausatz
09/28/17
Ich stelle Euch das Lego WeDo 2.0 Set (45300) vor. Es gehört zur Lego Education Linie und hat Kinder im Grundschulalter als Zielgruppe (und natürlich auch die zugehörigen AFOLs). Read more
Graphen-Visualisierung mit Neo4j
06/19/17
Nach einer kurzen Einführung in die Graphen-Theorie gibt es einen Überblick über die NoSQL-Datenbank Neo4j geben. Insbesondere geht es um die Visualisierung von Graphen mit Neo4j. Read more
In love with Ada
04/11/16
Anyone out there remembering the Ada programming language? In this blog post, I’m going to give you a short introduction... Read more
Joins and Schema Validation in MongoDB 3.2
12/07/15
Version 3.2 of the NoSQL database MongoDB introduces two new interesting features (amongst others) that I’d like to explore in... Read more
MongoDB-Einführung bei der Java-Usergruppe ruhrjug
07/02/15
Die Java-Enthusiasten im Ruhrgebiet treffen sich regelmäßig bei der ruhrjug, um sich über aktuelle Themen rund um die Programmiersprache Java... Read more
MongoDB 2.8 – Neue Storage-Engine WiredTiger
12/10/14
Mit Version 2.8 kommen wesentliche Neuerungen auf die Benutzer der NoSQL-Datenbank MongoDB zu. Eine davon ist die Einführung einer weiteren... Read more
MongoDB – Riesige Datenmengen schemafrei verwalten
07/11/14
MongoDB ist eine dokumentenorientierte NoSQL-Datenbank, die sich steigender Beliebtheit erfreut. In meinem Artikel MongoDB – Riesige Datenmengen schemafrei verwalten aus... Read more
MongoDB World 2014
07/07/14
For the very first time, the MongoDB community from all over the world gathered in one place. The MongoDB World... Read more
Test Automation for NoSQL Databases with NoSQL Unit and Travis-CI
05/08/14
Today I want to give you a short summary of my NoSQL matters talk on test automation for NoSQL databases.... Read more
Near-Realtime Analytics with MongoDB, Node.js & SmoothieCharts
01/21/14
In this blog post we’ll have a look at how easy it is to do some (near-)realtime analytics with your... Read more
MongoDB and Ruby
07/19/13
#MongoDB #Ruby I gave a lightning talk on the Ruby driver for MongoDB at the Cloud Developer Camp in Düsseldorf... Read more
MongoDB 2.4 Introduces Geospatial Indexing and Search for GeoJSON Geometries Point, LineString and Polygon
03/06/13
In case you are unfamiliar with the geospatial stuff, have a look at this introduction to geospatial indexing and searching... Read more
OOP 2013: Praktische Einführung in MongoDB
02/01/13
Auf der OOP 2013 gab es von mir einen Vortrag zum Thema “Praktische Einführung in MongoDB” Click on the button... Read more
MongoDB Text Search Tutorial
01/10/13
In my introduction to text search in MongoDB, we had a look at the basic features. Today we’ll have a... Read more
MongoDB Text Search Explained
01/07/13
The upcoming release 2.4 of MongoDB will include a first, experimental support for full text search (FTS). This feature was... Read more
Spring Batch and MongoDB
11/30/12
#springbatch #mongodb #nosql Spring Batch Spring Batch is a Spring-based framework for enterprise Java batch processing. An important aspect of... Read more
Oliver Gierke on Spring Data and all the REST …
11/20/12
Today something completely different: I’ll interview Oliver Gierke from SpringSource. He we go … Tobias Trelle: Hi Oliver. Would you... Read more
Pessimistic Locking with MongoDB
10/24/12
In this article, I’m going to sketch a pattern for implementing pessimistic locking with MongoDB. MongoDB is a document-orientated NoSQL... Read more
GridFS Support in Spring Data MongoDB
07/27/12
MongoDB MongoDB is a highly scalable, document oriented NoSQL datastore from 10gen. For more information have a look at the... Read more
MonjaDB – A MongoDB GUI Client Tool
06/06/12
MongoDB MongoDB is a highly scalable, document oriented NoSQL datastore from 10gen. For more information have a look at the... Read more
Spring Data – Part 6: Redis
04/27/12
Redis Redis [1] is a NoSQL [2] key/value datastore. Think of it as a big, very fast persistent hashmap. Redis... Read more
MongoDB User-Gruppe Düsseldorf
04/23/12
MongoDB MongoDB ist eine hochskalierbare, Dokumenten-orientierte NoSQL-Datenbank des Herstellers 10gen. Mehr Details finden Sie auf der MongoDB-Homepage: http://www.mongodb.org. Eine kurze... Read more
Cloud Computing Basics: the CAP Theorem
02/29/12
Almost unlimited scalability is an essential facet of cloud computing as it is offered by the Google App Engine or... Read more
Spring Data – Part 5: Neo4j
02/27/12
Introduction Neo4j [1] is a high-performance NoSQL [2] datastore specialized in persisting graphs. A graph [3] is data structure consisting... Read more
Spring Data – Part 4: Geospatial Queries with MongoDB
02/13/12
Introduction Every location-based service [1] has to solve the following problem: find all venues within a given distance from the... Read more
Spring Data – Part 3: MongoDB
02/01/12
In this part of my blog series I’m going to show how easy it is to access a MongoDB datastore... Read more
Spring Data – Part 2: JPA
01/21/12
What happened before? Part 1: Spring Data Commons Part 2: Spring Data JPA After looking at the Spring Data Commons... Read more
Spring Data – Part 1: Commons
12/22/11
One goal of the Spring Data project is to provide a common API for accessing both NoSQL datastores and relational... Read more
Testing and Mocking of Static Methods in Java
11/10/11
Again and again I stumble upon the myth that static code is evil because it is hard to test and... Read more
Documenting Custom Robot Framework Keyword Libraries
08/15/11
Right now, I’m introducing the robot framework for automated web tests for one of our customers. Beside the basic robot... Read more
Quo vadis VMware? vFabric vs. Cloud Foundry
06/07/11
Introduction We will start with an introdcution of VMware’s cloud solutions vFabric and Cloud Foundry. After that, the further evolution... Read more
AMQP Messaging with RabbitMQ and Spring
04/21/11
RabbitMQ is the message broker of the vFabric Cloud Application Platform. Its support of the performant messaging protocol standard AMQP... Read more
WebSphereMQ Integration using Mule ESB Community Edition
03/11/11
Mule ESB is an open source implementation of an enterprise service bus. In contrast to the free Community Edition, Mule’s... Read more