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Hacker News - Mon, 11/04/2024 - 7:52pm
Categories: Hacker News

Build an 8-bit computer from scratch

Hacker News - Mon, 11/04/2024 - 7:49pm

Article URL: https://eater.net/8bit

Comments URL: https://news.ycombinator.com/item?id=42047640

Points: 2

# Comments: 1

Categories: Hacker News

Ask HN: Is there a datastructure for leaderboards with filtering and timeslices?

Hacker News - Mon, 11/04/2024 - 7:17pm

I built a variation of B+Tree to track leaderboard rankings and it works similar to Redis Z functions (zadd/zrange).

Now I'm trying to think of a solution to filter by country code or some other player attribute. In addition, I also want to dynamically create timeslices so I can show leaderboard rankings that occurred between time A and time B.

If I were to implement the filter or timeslices into my B+Tree, I'd have to basically scan from the first record down to the last by checking against player attributes and/or the timestamp of when ranking was inserted.

The goal is to have 1 leaderboard index per stat, rather than X leaderboard per stat.

Is it feasible, or should I just create a new leaderboard index for every combination of attribute / timeslice?

Comments URL: https://news.ycombinator.com/item?id=42047477

Points: 1

# Comments: 0

Categories: Hacker News

Is your air fryer spying on you? Concerns over ‘excessive’ surveillance in smart devices

Guardian Security - Mon, 11/04/2024 - 7:00pm

UK consumer group Which? finds some everyday items including watches and speakers are ‘stuffed with trackers’

Air fryers that gather your personal data and audio speakers “stuffed with trackers” are among examples of smart devices engaged in “excessive” surveillance, according to the consumer group Which?

The organisation tested three air fryers, increasingly a staple of British kitchens, each of which requested permission to record audio on the user’s phone through a connected app.

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Categories: The Gaurdian

Best Internet Providers in Greenville, North Carolina

CNET Feed - Mon, 11/04/2024 - 7:00pm
Greenville has plenty of internet options available. Our experts narrowed down the list to the best internet providers in Greenville, NC to simplify your search.
Categories: CNET

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