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/dev/null is an ACID compliant database

(jyu.dev)
587 points swills | 2 comments | 23 Oct 25 21:28 UTC | HN request time: 0.479s | source
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jihadjihad ◴[24 Oct 25 01:25 UTC] No.45689668[source]▶
In a similar vein, this is one of the most interesting things I’ve come across on HN over the years:

https://www.linusakesson.net/programming/pipelogic/index.php

Past HN post: https://news.ycombinator.com/item?id=15363029

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1. Sharlin ◴[24 Oct 25 15:43 UTC] No.45695783[source]▶
This is probably old news to people interested in nonstandard methods of computation, but it just occurred to me that the fluid-based analogy to transistors is straightforward to construct:

              S
            |   |
     -------|   |
   G  \/\/|##|  |
     -------|   |
            |   |
              D
This is essentially a pressure regulator, except that the pressure is controlled by an independent signal. Pressure in G pushes a spring-loaded piston to block flow from S to D (a slightly different construction instead allows flow when G has pressure). Modulating the pressure in G can also used to modulate the flow, based on F = -kx. This simple construction has some issues, such as the fact that the pressure needed to move the piston depends on the pressure in S-D.
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2. duped ◴[24 Oct 25 15:49 UTC] No.45695837[source]▶
This analogy goes pretty deep.

Fun fact, in British English the term for a vacuum tube triode is "valve" precisely because it operates like a valve. FETs (particularly JFETs) follow the same analogy (which is why FET and triode amplifier circuits look basically the same) using the field effect instead of thermionic emission.