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On March 7, 2024, tailscale.com experienced a 90-minute downtime due to an expired TLS certificate. This issue stemmed from a misconfiguration when migrating to a new hosting provider that does not support IPv6 natively. The expired certificates disrupted access to the site, affecting the Tailscale documentation, blog, and quick install script. Steps were taken to […]
The article discusses the importance of optimizing the performance of operating systems, particularly focusing on locklessly sharing data between threads using methods such as RCU (Read, Copy, Update). The author explains the concept of RCU in detail, highlighting its wait-free nature but cautioning against potential memory leaks if not implemented correctly. The article challenges common […]
MIT chemical engineers have developed a process to efficiently convert carbon dioxide to carbon monoxide, a precursor for creating valuable compounds such as ethanol and fuels. This innovation could reduce greenhouse gas emissions by pulling CO2 from power plants and other sources. The method involves using electricity and a DNA-based catalyst to make the conversion […]
Renowned sculptor Richard Serra, known for his large-scale steel sculptures that pushed the boundaries of Minimalist art, has passed away at 85. His monumental works, such as Tilted Arc, have faced controversy but ultimately influenced generations of artists. Serra’s sculptures, cold and imposing, challenge viewers to engage with their surroundings in new ways. Although he […]
PiEEG is a ground-breaking Brain-computer interface project developed over years to measure EEG, EMG, and EKG signals. It offers a simple way to begin working with biosignals, using a Raspberry Pi shield. The open-source platform excels in measuring various biosignals, such as EEG, EMG, and ECG, with ease. By connecting electrodes and running a Python […]
The Orchard in Santa Ana, CA, is an affordable housing complex for chronically homeless residents, with a community garden and commercial kitchen. Surprisingly, in 2023 it briefly served as the headquarters for OpenAI’s $175 million venture capital fund, until it was revealed that the documents filed with the California Secretary of State listing Jacob Vespers […]
The post discusses maximizing the lifespan of Raspberry Pi’s SD card by running it with a read-only root filesystem. While this can increase longevity, it also means logs won’t persist after a reboot, necessitating remote logging for troubleshooting. The content covers steps to remove unnecessary software, disable services, and implement workarounds for services requiring disk […]
The Santa Barbara News-Press has been a pivotal part of the community’s history since 1868, documenting births, weddings, obituaries, and everything in between until its recent bankruptcy. The controversial ownership by billionaire Wendy McCaw led to a scandalous series of events, resulting in bankruptcy and potential loss of the digital archive to a mysterious foreign […]
The Chesapeake Bay Bridge-Tunnel construction began in 1956 to replace ferries over the Bay. Costs reached $200 million, covered through tolls. Planning involved the challenge of crossing busy shipping routes and led to the construction of tunnels under the channels. Unexpected dangers, like snapped cables and accidents, caused multiple deaths. Workers faced harsh weather, with […]