The Wiert Corner – irregular stream of stuff

Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Far less active on blog on social media: some personal things that need to be done.

Posted by jpluimers on 2019/04/03

Some people already noticed me being far less active on social media including this blog.

This will continue for a while, as I am supporting two people that are very dear to me.

  • One needs to get some MRI scans very soon, with past results not being promising, so consequences not clear yet.
  • Another I am protecting from mental abuse by somebody close, something which is very hard to prove, but has very real consequences. Recognising the – initially very subtle – behavioral changes, and convincing other people up the supporting and medical tree they were indeed true and related, took several years, so I recon the recovery process will take long too.

Luckily, my blog queue has been filled with about 2 years of content, so that will run automatically.

Social media response from me will be on a “when I feel like it” base until further notice, focussing on things that give me energy and bring me joy.



Posted in About, Personal | Leave a Comment »

The biggest lie I tell myself is not about new years resolutions.

Posted by jpluimers on 2019/01/01

The biggest lie I tell myself is “I don’t need to write that down, I’ll remember it”

It’s likely older, but the oldest reference I could find was 2012 [WayBack].

So before I forget:

Happy New Year everyone!

With the above quote, it is no coincidence I started my blog even earlier (in 2009): it’s my off-line memory, way better readable than my hand-writing and indexed by various search engines.

Read the rest of this entry »

Posted in About, LifeHacker, Personal, Power User | Leave a Comment »

Splitting user settings from your Delphi projects:  DprojSplitter by Uwe Raabe

Posted by jpluimers on 2019/06/20

Reminder to self to try this out: [WayBackWorking in a team? DprojSplitter might be helpful! | The Art of Delphi Programming.

The most recent version (covering a wider range of Delphi versions) was at [WayBackDprojSplitter for Delphi XE2 to XE6 available | The Art of Delphi Programming.

DprojSplitter handles the current build configuration and current plattform. In addition these settings are handled, too (found in CommonOptionStrs):


Heck, you can even configure the ones to split: [WayBackConfiguring DprojSplitter to Your Needs | The Art of Delphi Programming



Posted in Delphi, Development, Software Development | Leave a Comment »

Some links about the TCP SACK PANIC attacks on Linux and FreeBSD Kernels

Posted by jpluimers on 2019/06/20

The TCP SACK vulnerabilities as found by Netflix: [WayBack] security-bulletins/ at master · Netflix/security-bulletins · GitHub.

Easy, but slow workaround from [WayBack] linux – How to disable TCP SACK for CentOS? – Super User:

Temporary (until boot):

echo "0" > /proc/sys/net/ipv4/tcp_sack

Permanent (even after boot):

echo "net.ipv4.tcp_sack = 0" >> /etc/sysctl.conf
sysctl -p



Posted in *nix, *nix-tools, Communications Development, Development, Internet protocol suite, Power User, Security, TCP | Leave a Comment »

SQL Server 8060 row size query limit

Posted by jpluimers on 2019/06/19

Every now and then you bump into a limit you did not know it existed before:

Cannot create a row of size 8209 which is greater than the allowable maximum row size of 8060.

This is while querying a few tables having a combined column size of more than 8060. Which means it is not just about single tables being too wide.



Posted in Database Development, Development, SQL, SQL Server | Leave a Comment »

Pattern: Service Mesh

Posted by jpluimers on 2019/06/19

I need to re-read this: [WayBackPattern: Service Mesh

Via [WayBack] What is a Service Mesh? What is the purpose of Istio? – The Isoblog. /[] What is a Service Mesh? What is the purpose of Istio in Kubernetes? … – Kristian Köhntopp – Google+:

An article by Phil Calçado explains the Container Pattern “Service Mesh” and why one would want that in a really nice way.

Phil uses early networking as an example, and explains how common functionality needed in all applications was abstracted out of the application code and moved into the network stack, forming the TCP flow control layer we have in todays networking.

A similar thing is happening with other functionality that all services that do a form of remote procedure call have to have, and we are moving this into a different layer. He then gives examples of the ongoing evolution of that layer, from Finagle and Proxygen through Synapse and Nerve, Prana, Eureka and Linkerd. Envoy and the resulting Istio project of CNCF are the current result of that development, but the topic is under research, still.


Posted in Cloud Development, Development, Software Development | Leave a Comment »

Relays and Arduino / ESP8266 / ESP8266X

Posted by jpluimers on 2019/06/19

As a follow-up on Raspberry Pi and relays – follow up on Having one Raspberry Pi reset another Raspberry Pi through relay or transistor some of my research links to bring this to Arduino, ESP8266, ESP8266X and similar devices:


Posted in Arduino, Development, ESP8266, ESP8266X, Hardware Development | Leave a Comment »

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