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His language list is a bit specific imo. For good or bad many corporate applications are c# and Java. If web add JavaScript in there and if data or cloud add Python. All things being even between two candidates if your language skillset matches a project you’d be more likely to get hired. Wondering if this guy can broaden his languages to include one or two of the top 5 languages.
Unfortunately are not all about programming skills alone, working within flexibility of learning new skills, team politics and team structure can play a lot for candidate selection.
The main thing I’d say is don’t give up but use some of your free time to maybe diversify your skillset and apply for some other positions in those areas.
Data centers reuse water by recirculating the same water through their cooling systems multiple times. According to Google, this practice saves up to 50% of water when compared with “once-through” cooling systems.
However, eventually this reused water needs to be replaced with new water, due to the risk of scale formation or once the conductivity of the water is too high.
The need for new water results from the build-up of scale-forming minerals in the reused water – such as calcium, magnesium, and silica, which become concentrated over multiple evaporative cooling cycles.
Ultimately, the spent data center cooling water can be treated and reused (or recycled) for other purposes such as irrigation or toilet flushing.
https://dgtlinfra.com/data-center-water-usage/#:~:text=What Happens to Water Used,a local wastewater treatment plant.