Disabling the Group Policy Client Service in Windows

Scenario:

• You are an administrator on your machine.
• Your machine is either:
• In a Windows Domain, and you don't want the domain admins messing with it.
• Not in a Windows Domain, and you just don't want useless services running.

In this case, what you probably want to do is prevent the Group Policy Client Service from running on your machine.  Unfortunately, that's not a straightforward task to accomplish, because if you go to "services" and try to stop or disable this service, Windows doesn't let you.

Here is how to do it.

These instructions have worked for me on Windows 7; they might also work on other versions of windows.  If there is anything in these instructions that you don't quite understand, what it means is that these instructions are not for you;  don't try to follow them, you are going to wreck things.  Ignore this post, move on.

1. Using regedit go to HKLM\SYSTEM\CurrentControlSet\services\gpsvc and:
1. Change the owner to yourself.
2. Grant Administrators (not just you) full control.
3. Change the value of “Start” from “2” to “4”.
2. Now go to HKLM\SYSTEM\CurrentControlSet\Control\Winlogon\Notifications\Components\GPClient and:
1. Change the owner to yourself.
2. Grant Administrators (not just you) full control.
3. Delete the entire key. (Possibly after exporting it so as to have a backup.)
3. Restart your machine.

My notes on "Greg Young - The Long Sad History of Microservices"

Greg Young - The Long Sad History of Microservices
From the "Build Stuff" event of April 2017.

Talk begins at 9:45.

Highlights of the talk:

27:00 Placing a network between modules simply to enforce programmer discipline 

29:05 There is other levels of isolation I can go to. I can run a docker container per service. That's the coolest stuff right? What that means is I can make it work on my machine so I send my machine to production. 

29:52 Now, one thing that's very useful is I don't necessarily want to make this decision up front. And I don't necessarily want to make the same decision in dev as in production. I may want in dev to have a different way that we run things, why? because bringing up 19 docker containers on your laptop is not very much fun. I may prefer to host everything inside a single process to make debugging and such a lot easier when I am running on dev in my laptop. Whereas in production we may go off to multiple nodes. 

34:16 If you have maintenance windows, why are you working towards getting rid of your maintenance windows? Is this a business drive or is this you just being like C.V. driven development? 

My notes:

Unfortunately his shrieky voice makes him sound like he is bitching about things, which in a sense he is, but it would help his cause to deliver his criticism in a more palatable tone. Also, in order to make his point about microservices being nothing new he seems to disregard statelessness.

Resources referenced in the talk:

https://en.wikipedia.org/wiki/Queueing_theory

https://en.wikipedia.org/wiki/π-calculus

https://en.wikipedia.org/wiki/Actor_model

Leslie Lamport - Time, Clocks, and the Ordering of Events in a Distributed System
(available on the interwebz)

C.A.R. Hoare - Communicating Sequential Processes
(available on the interwebz)

Dear recruiter...

If you are a recruiter wishing to contact me with regards to some job opportunity, please read this.

Migrating a project from java 8 to java 9

Now that Java 9 is out, I decided to migrate to it my pet project, which is around 120K lines of java.

The first step is to just start compiling and running against jdk9, without using any of its features yet.

This is an account of the surprisingly few issues that I encountered during this first step and how I resolved them.

Issue #1: Object.finalize() has been deprecated.

A Hacker's Tale (With a Human Side)

Screenshot of Borland Turbo Debugger found on the interwebz, possibly the same version that I was using back then.

This is a hacking story from my University years. It ends with a nice bit about human qualities. 

Grumpy Posts

Besides the delicate grumpiness which is gratuitously scattered throughout this blog like the golden rays of light in a gentle sunset, there exist a few blog posts which have been written with the express purpose of venting out some major grumpiness.

Here is a list of them:

On UML (oh, do not get me started)

The Wild, Wild Web

On JUnit's random order of test method execution

On UUIDs and GUIDs

On scripting languages

Why Oracle sucks

The GWX (Get Windows 10) KB3035583 trojan horse

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(The list will be extended as more posts are added.)

Rich Hickey - Simple Made Easy

"Simple Made Easy" presentation by Rich Hickey from the InfoQ Software Development Conference, recorded at Strangeloop 2011

Watch the presentation here: https://www.infoq.com/presentations/Simple-Made-Easy 

(the slideshow plays alongside with the video.)

My notes on the presentation:

"Simplicity is prerequisite for reliability" - Edsger W. Dijkstra

Simple vs. Complex, Easy vs. Hard