Symmetric encryption uses the same key to encrypt and decrypt information. Symmetric encryption is generally faster than asymmetric encryption. However, it has the issue of finding a secure method of sharing the key (e.g., password) for the encryption so that it may be used. Symmetric encryption includes: Block ciphers such as AES (Advanced Encryption Standard), … Continue reading Security: Symmetric / Asymmetric Encryption (Notes)
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Ring Doorbell 3 Fails To Connect To Wi-Fi
At the beginning of 2021 our household invested in a Ring doorbell. It's a pretty good device but in the early hours of 7th December something happened (possibly related to the AWS outage) and the doorbell decided that it no longer wanted to connect to the wi-fi network it's been using for months. This was … Continue reading Ring Doorbell 3 Fails To Connect To Wi-Fi
Terminal Not Reading Input, C# and Visual Studio Code (C Sharp / C#)
I'm currently refreshing my knowledge skills of C# (C Sharp), starting with a work through of C# Programming (Mike McGrath) to help with my ASP.NET university project. On my desktop computer I'm using Visual Studio instead of Visual Studio Code (my preferred IDE for most languages), but on my ageing laptop Visual Studio takes an … Continue reading Terminal Not Reading Input, C# and Visual Studio Code (C Sharp / C#)
What Is The Difference Between Scaling Up And Scaling Out (Cloud)
One of the advantages of cloud infrastructure is the ability to scale infrastructure to meet demand. The options for scaling are: Scaling Up / Down Scaling Up / Down can also be referred to as vertical scaling and is when components within a single instance are increased or decreased. For example, adding more memory to … Continue reading What Is The Difference Between Scaling Up And Scaling Out (Cloud)
NIST: Definitions Of Cloud Computing
The National Institute of Standards and Technology (NIST) is a part of the U.S. Department of Commerce and in September 2011 NIST published a definition of Cloud Computing. The full definition / document (SP 800-145) can be read via the NIST webpage: https://csrc.nist.gov/publications/detail/sp/800-145/final , however I am going to summarise parts of the document. Five … Continue reading NIST: Definitions Of Cloud Computing
DevOps: What Does Cattle Not Pets Mean?
In a DevOps sense, "cattle not pets" means creating services and / or infrastructure that can be maintained, destroyed and re-deployed with little human interaction. Why Cattle Not Pets? Imagine the scenario: As a tech user, IT professional or engineer you may find yourself in charge of looking after a particular piece of technology (e.g. … Continue reading DevOps: What Does Cattle Not Pets Mean?
What Is DevOps?
I’m currently finishing up some of my “part written” blog posts, and after releasing my post around CPD planning I thought I would get my DevOps post out as well. Over the last few years, I have been learning to be more agile and carry out tasks with a DevOps mindset (or at least try … Continue reading What Is DevOps?
Always Learning: How A CPD Plan Can Help
I’m a big fan of trying to improve my knowledge and skills (it’s one of the reasons I started this blog), and one of the great ways of doing this is having a Continuous Professional Development (CPD) plan. A CPD plan helps to map out what you want to learn, targets you want to meet, … Continue reading Always Learning: How A CPD Plan Can Help
Mentos and Diet Coke
It's half term in the UK which means that GeekTechV2 and I have had chance to get outside and carry out some science fun. In this case, adding some Mentos to some Diet Coke. https://youtu.be/-MCDegrPQvo We used 3 bottles (1.5 Litres per bottle) of Diet Coke to see the reaction. The reaction is physical and … Continue reading Mentos and Diet Coke
The Raspberry Pi Pico / Pimoroni Pico Display
It's January 2021 and the awesome folks over at Raspberry Pi have announced a new device, a micro controller called the Raspberry Pi Pico. The full details / news about the device can be found at: https://www.raspberrypi.org/blog/raspberry-pi-silicon-pico-now-on-sale/ . I grabbed one from the excellent Pimoroni and with speedy delivery from Royal Mail it arrived over … Continue reading The Raspberry Pi Pico / Pimoroni Pico Display
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