Technology weblogIT-Essence |
Thursday Sep 03, 2020
Certificate Python for Data Sciences
Posted at 10:11PM Sep 03, 2020 by Zeger Hendrikse in Python | Comments[0]
Wednesday Jun 03, 2020
Trunk based development
The second way of DevOps states that we should aim for fast feedback loops. The more frequently we integrate, the faster we get feedback on whether our change works when it is integrated with the mainline. The more frequently we integrate, the smaller our batch size (containing changes), hence the sooner we can identify unexpected (integration) problems if any. As an ultimate goal, we aim to integrate continuously. Creating a branch is doing exactly the opposite. It isolates your changes (from the mainline). The longer a feature branch lives, the longer the (integration) feedback loop becomes. This is exacerbated by the fact that integration problems become more difficult to trace down as the integration is postponed, as the batch size increases accordingly. Moreover, merges occur much less frequently (due to the isolation), hence merge conflicts are bulkier and thus significantly more difficult to resolve. Concluding, it is good practice to merge your code back to the mainline (trunk) at least once a day. However, your final goal should be to commit dozens of small self-contained commits directly onto the mainline per day. A hallmark of a good developer is being able to split his work into many such small self-contained batches. It is a pivotal skill and the first thing junior developers should actually acquire! Therefore trunk-based development is especially recommended when there are (many) junior developers in the team! [Read More]Posted at 10:47PM Jun 03, 2020 by Zeger Hendrikse in Continuous Delivery | Comments[0]
Friday May 01, 2020
Technology and organisational capabilities for CD
In his presentation Continous Delivery and the Theory of Constraints, Steve Smith presented two slides on technology and organisational capabilities required for CD. The filed boxes merely indicate which capabilities he found to be present in some companies that he was working for. Technology capabilities Organisational capabilities Posted at 11:31AM May 01, 2020 by Zeger Hendrikse in Continuous Delivery | Comments[0] Rigorous SOLID leads to functional programming
If you take the SOLID principles to their extremes, you arrive at something that makes Functional Programming looks quite attractive: https://blog.ploeh.dk/2014/03/10/solid-the-next-step-is-functional/ Posted at 09:23AM May 01, 2020 by Zeger Hendrikse in General | Comments[0]
Wednesday May 15, 2019
DevOps articles on TopTal
Posted at 10:41PM May 15, 2019 by Zeger Hendrikse in Continuous Delivery | Comments[0]
Thursday Mar 21, 2019
Interesting posts on TopTal blog
Posted at 08:25PM Mar 21, 2019 by Zeger Hendrikse in General | Comments[0]
Wednesday Jan 30, 2019
OKRs versus KPIs
In this post a nice analogon can be found illustrating the difference between OKRs and KPIs: Posted at 10:46AM Jan 30, 2019 by Zeger Hendrikse in General | Comments[0]
Thursday Jan 17, 2019
Interview questions Interview questions:
Posted at 07:14PM Jan 17, 2019 by Zeger Hendrikse in Continuous Delivery | Comments[0]
Friday Jan 04, 2019
Brilliant comic introducing Kubernetes Please find here a brilliant comic introducing Kubernetes. Posted at 10:34PM Jan 04, 2019 by Zeger Hendrikse in General | Comments[0]
Monday Apr 30, 2018
Deploying a COTS Application in the AWS cloud with Continous Delivery, IaC, Packer, GitLab, Ansible and Terraform
In this post we discuss how to deploy a COTS application in the Amazon cloud using a continuous delivery pipeline in GitLab, using Packer and Ansible to create an AMI (abstract machine image) and Terraform to lay out the infrastructure to which the application will be deployed. Posted at 11:19PM Apr 30, 2018 by Zeger Hendrikse in Continuous Delivery | Comments[0] |
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