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Showing posts from 2018

Moving Host Cobol Batches and Monolith Webapps to Cloud and Microservices

Very interesting presentation in Amazon Event "From Mainframe to Microservices - Vanguard's Move to the Cloud" . Following parts can be used as Migration Patterns : Different ways of how to move from Mainframe to Microservices: Re-host Reengineer  Refactor Rewrite Batch job migration Data analytics enablement Data-driven augmentation Re-platform with Linux and Java Repurchase Retire Combination of all This presentation also shows the Cloud Data Architecture at Vanguard. Generally this is how we can build our own database for our micrsoservicew at the cloud and at the same time still use the data from DB2 mainframe on-premise as well.  Advantages using this data architecture: Each microservice reads data from its own local database. DB2 mainframe database can still be used from other Host / Cobol batches. DB scalability Disadvantages: You cannot write to the database in case you have a network problem. There is an extension t

WikIT42 - Structure for IT Division and IT Products

After introducing Confluence three times in three different companies I made a template which consists the  best practices  of how you could structure your IT Division and IT Products within your organisation. Although the three different companies have completely different domains ( marketing , payment and environmental services ) the stucture of the division and products are quite the same. So if you need to introduce Confluence in your company and you would like to bring the "product team" together, just take a look at WikIT42: A German version can be found here: For discussion I open a Gitter chat at: Enjoy, Lofi

Low Code == Low Quality?

Recently Manuel and I wrote an article about Low Code / No Code Platform at . It is quite interesting to see the discussions. More than 400 discussion items. It seems that this topic is quite an important topic for developers. Most of them are against or don't trust Low Code / No Code Platform. Enjoy reading, Lofi

The Story of SAP and Lidl (or others, like Deutsche Post and co.) Or How Can You Throw 500 Millions EUR Out of Your Window...

The Story of SAP and Lidl (or others, like Deutsche Post and co.) Or How Can You Throw 500 Millions EUR Out of Your Window... I wrote this article based on following information: - - - - It is hard to believe that after so many years someone still believes to be able to migrate long running and still working system with a naive project style. We have to rethink our way to product instead of project. Moving to #SAP or any other systems means building a product and its long term product team not a project with a clear start and end point. Introducing SAP is just the same as introducing any other standard software product. Let's take a look at introducing simple #JIRA product in your software development division. You could customize JIRA workflow as complicated as you wish but you shouldn't because you cannot upgrade it later on. If you need to change or extend the process you

GWT Training for Java Developers with GWT Boot

I'm always a fan of " one language solution with Java to rule them all ", here are sofar my opinions about Polyglot Programming: Why "Polyglot Programming" or "Do It Yourself Programming Languages" or "Language Oriented Programming" sucks? Warum Polyglot Programming nicht praxistauglich ist Java als universelle Programmiersprache Until today nobody can excite me about Polyglot Programming. My points are getting another big support after I read the " Rise of Polyglot at Netflix " presentation which says that Polyglot is expensive , also for company in the category of Netflix. At the end of the day we need to be productive . Our applications should have a  high quality standard and the total costs  (TCO) of our software development should be manageable and low . To be able to reach this goal we have Java with Spring Boot or JakartaEE on the server-side which offers REST interfaces. So logically for user interface development

Low Code and No Code Platform == NOT with VISUAL Everything

It's interesting to read this article: The Evolution of Low-Code: Welcome to the Machine . The content is in my opinion just a marketing for Low Code Platform. It is not true to say that the RAD tools are not successful. There are a lot of good RAD tools available from 1992 until today e.g. Delphi (Borland and now Embarcadero). No tons of generated code, very precise and works very good. Using visual coding thing does not mean to have higher abstraction layer. And programming visual for logic like “if-then-else” with “flow chart” or BPMN or UML or other visual tools won’t scale. Therefore we still write textual today and not drawing everything to communicate. Drawing is ancient, exists before you can write and read. Visual and textual representation have their own role today in software. Letting non-developers clicking visual programming tool means ‘horror” for the TCO (Total Cost of Ownership) of your app. Application development cost is always TCO and not only the first co

Rancher 1.6 on Macbook

Introduction Installing Rancher 1.6 on your Macbook should be straight forward. In my case it was not as easy as I thought because of version compatibility between Docker and Rancher. Here are my steps, enjoy. Install Docker Toolbox in your Macbook First of all Rancher 1.6 does not support Docker for Mac , so instead you need Docker Toolbox for Mac . Check this page for differences between Docker for Mac and Docker Toolbox for Mac . One important point at the time you install Docker Toolbox for Mac: you need to get the correct version of the supported Docker. Rancher 1.6 supports some Docker versions. You can check the list on this support page . If you are trying for the first time please get the Community Edition (ce) of Docker. Here is a functional example: Docker Toolbox for Mac Version 17.06.0-ce. Download: Get the .pkg file for Macbook Be careful: Docker Toolbox always downloads the current Docker version