EU coal and gas collapse as wind and solar ascend
Photo: Hornsea Project Europe’s coal electricity generation tanked by 26% and gas by 15% in 2023, according to a new report from energy think tank Ember. That collapse resulted in an impressive 19% reduction in the EU’s power sector emissions. What’s more, for the first time, wind power, which grew by 18%, surpassed gas, which […]
BitLocker encryption broken in 43 seconds with sub-$10 Raspberry Pi Pico
Bitlocker is one of the most easily accessible encryption solutions available today, being a built-in feature of Windows 10 Pro and Windows 11 Pro that’s designed to secure your data from prying eyes. However, YouTuber stacksmashing demonstrated a colossal security flaw with Bitlocker that allowed him to bypass Windows Bitlocker in less than a minute […]
Oslo acquires ChatGPT for 110k students and teachers
Løsningen som leveres er personvernmessig sikret og skal ikke brukes til trening av nye KI-modeller, skriver Aftenposten. Divisjonsdirektør Trond Ingebretsen i Utdanningsetaten sier at både undervisning og vurdering må legges kraftig om. – Utfordringen vår har vært at så å si alle elever allerede har gratis tilgang via sin smarttelefon. Da måtte vi spørre oss: […]
The Sinusoidal Tetris
Let’s play Tetris, but with a twist. No geometrical figures will fall from the sky. Instead, you control a sinusoid, defined by: (f(x)=A*sin(omega x + varphi)): (Source code) Controls To increase the angular frequency, (omega), press: s; To decrease the angular frequency, (omega), press: x; To increase the amplitude, (A), press: a; To decrease the […]
jQuery v4.0 Beta
Posted on February 6, 2024 by Timmy Willison jQuery 4.0.0 has been in the works for a long time, but it is now ready for a beta release! There’s a lot to cover, and the team is excited to see it released. We’ve got bug fixes, performance improvements, and some breaking changes. We removed support […]
The power of two random choices
Using less information to make better decisions. In many large-scale web services, multiple layers of stateless and stateful services are seperated by load balancers. Load balancing can be done with dedicated hardware, with dedicated software load balancers, using DNS trickery or through a load-balancing mechanism in the client. In large systems, the resources and constraints […]
The disaggregated write-ahead log (2023)
The traditional way replicated systems are architected is to physically co-locate the write-ahead log (WAL) on the nodes where the state is being maintained. Then a consensus protocol like Paxos or Raft is used to make sure the log on each replica agrees. With many classical databases that have been around a while, instead of […]
The leadership myth in replicated databases (2023)
I’ve heard multiple times that a strong notion of leadership somehow simplifies replication. I don’t think this is true. I explain why in this post. In a prior post, we described the State Machine Replication (or SMR) abstraction. The SMR API allows you to propose commands and play them back in a total order. In […]
SQL for data scientists in 100 queries
☆ what this is notes and working examples that instructors can use to perform a lesson do not expect novices with no prior SQL experience to be able to learn from them musical analogy this is the chord changes and melody we expect instructors to create an arrangement and/or improvise while delivering see Teaching Tech […]
Alaska Airlines flight 1282 NTSB preliminary report [pdf]
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