/dev/null is an ACID compliant database

622 pointsposted 3 months ago
by swills

202 Comments

jihadjihad

3 months ago

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

Sharlin

3 months ago

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.

duped

3 months ago

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.

66yatman

3 months ago

export const parse = () => null export const stringify = () => 'null'

lloeki

3 months ago

Around 2004-2005 during some research at the end of my curriculum I happened to be doing with some specific jobs that were parallelised and data flowing as it was processed along a component diagram for visualisation, and it looked very familiar....

So I had this idea that you'd design code to be applied to a processing unit of specific capacity which would lead to execution flowing at a certain speed when applied a certain computation potential... and surprise surprise the relation would be uh, linear, and say you increase a loop's count and so the code would _resist_, or you'd increase computation potential to increase the flow.

So uh, yeah, Ohm's law but it's _code_ that's resistive.

And then I started to look for the pattern and find code with inductive properties, and code with capacitive properties, and some deeper properties emerged when you started modelling stuff with multiple processing units and data flowed around, split (map?), rejoined (reduce?).

And there was something strangely efficient about a way to see code that way and optimise using _laws_ describing the whole execution flow using familiar tools as a whole instead of thinking in gritty details barely higher-level than MOV AX... you "just" had to design code and the execution system so that it would operate in this kind of framework and allow that kind of analysis to identify bottlenecks and weird interplay actions across components.

And then I brought that up to my mentor and he said "well that's complete lunacy, stop thinking about that and focus on your current work" and, uh, case closed.

That was the young and naive me who thought that research labs were made to do think-outside-the-box connect-the-dots innovative stuff...

kevindamm

3 months ago

It's never too late to learn queueing theory

...because the typical setup assumes λ ≤ μ so all arriving jobs eventually get serviced.

I think there's a lot of unmet potential in design of interfaces for pipelines and services that really gets at the higher level you mention. There are some universal laws, and some differences between practice and theory.

jmux

3 months ago

I hadn’t seen this before, this is sick! thanks for posting it here :)

gchamonlive

3 months ago

Best stack cloud providers don't want you to know about, /dev/null for db and https://github.com/kelseyhightower/nocode for the backend.

nomel

3 months ago

I've never had a single issue with any user after moving our databases to /dev/null.

crusty_jpeg

3 months ago

It's great. We saw a 2000% throughput increase on our business analytics platform when we switched to a /dev/null backend.

hylaride

3 months ago

My god, AI crawlers probably train on Hacker News, too. The vibe coders sure are in for a shock in 2-6 months... :-D

user

3 months ago

[deleted]

quietbritishjim

3 months ago

WTF is going on with the issues and pull requests for that repo?

sundarurfriend

3 months ago

The less substance there is to it, the easier it is to talk about.

The Chinese comments ("issues") also seem to be the same kind of jokes as the English ones, "no code means no bugs, perfect", etc., from the few I tried getting translations of. I imagine this went viral on Chinese social media, which makes sense since it's the sort of joke that's easy to translate and doesn't depend on particular cultural assumptions or anything.

bspammer

3 months ago

Also GitHub is one of the very few western websites with a comment section that isn’t blocked in China.

gchamonlive

3 months ago

In nocode you fix nothing and you don't change anything, that's why issues and pull requests are a mess, they literally cannot be dealt with by design.

SanjayMehta

3 months ago

They're using it to communicate in code to each other.

QuantumNomad_

3 months ago

Well they should stop that and start communicating in nocode instead.

fennec-posix

3 months ago

Had to see for myself, and yeah... that's a whole lot of chaos. I'm sure I'd get the joke if I could read Chinese though.

eru

3 months ago

Ask Google Translate?

pyuser583

3 months ago

I've used /dev/null for exactly this purpose. I have output that needs to go somewhere, and I don't want to worry about whether that somewhere can handle it.

Later on in deployment, it will go somewhere else. Somewhere that has been evaluated for being able to handle it.

In that way, /dev/null is to storage what `true` is to execution - it just works.

CaptainOfCoit

3 months ago

Bug free software is a pipe dream, but if there is anything I've never encountered any bugs with, /dev/null and true is certainly in the top 3.

noir_lord

3 months ago

Joking aside I can’t ever remember seeing a bug in either bash or zsh, never seen either crash or segfault and anytime I’ve had weirdness it’s always turned out to be me missing something.

Both (along with a lot of the standard utilities) are a testament to what talented C programmers plus years of people beating on them in unintended ways can achieve in terms of reliability/stability.

1718627440

3 months ago

Programs not outputting a final newline to stdout leave a prompt that doesn't start on column 0, and readline seams to not takes this into consideration, but still optimizes redraws and overwrites so you get an inconsistent display. This bugs seam to exist in a lot of shells and interactive programs. The program causing the issue isn't POSIX conform though.

tuetuopay

3 months ago

I don't get why this is still the case on classic shells. fish properly puts the prompt on column zero, while outputting a small "line return arrow" at the end of the command to indicate it lacked one.

mort96

3 months ago

It's arguably not the shell's role to protect against garbled output. Do you expect a shell to reset the TTY state after every command too in case you accidentally `cat /dev/urandom` and the terminal emulator enters a weird state due to random escape sequences?

The newline is a line terminator, a command outputting an incomplete line without a line terminator is producing garbled non-textual output. Files which contain incomplete lines without a line terminator are similarly garbled non-textual files and not very different from /dev/urandom or any other binary file.

wat10000

3 months ago

If you were designing a command-line interface from scratch, you'd definitely make it so that the command prompt gets displayed consistently and reliably after each command terminates, regardless of what garbage it spewed. The only reason we see anything different is because UNIX systems happened to grow that way, and everything gets crammed through an interface that was originally designed to show characters on physical paper.

With the design we actually have, the shell is the only thing in the chain that could reset the TTY state and ensure that the prompt gets displayed consistently each time, and it should. I wouldn't go so far as to say that I expect it to (my expectations for computers are not high in general) but it ought to.

1718627440

3 months ago

command-line interface != shell

Maybe that should be actually the job of the terminal emulator instead. It could happen when a new pseudo terminal is (de)allocated, which is ordered by the shell.

wat10000

3 months ago

> command-line interface != shell

I realize that. That's why I was talking about a hypothetical where it was designed all together, instead of evolving over the decades like we did.

In the situation we actually have, the shell is the only single entity that's in a position to actually do this. The terminal emulator doesn't know when a command completes. Of course, it doesn't have to be solved in a single entity. It would make sense to have the shell signal command completion to the terminal emulator, and let the terminal emulator do whatever it wishes with that information, which could include resetting any garbage state.

1718627440

3 months ago

I don't think we really disagree.

I think that even when you would design it all today the distinction between interface and running program would still be useful, otherwise every program would need to implement it's own interface and a shell does more than just communicate interactively with the computer. It's also a task runner, program orchestrator, controls program selection and allows for automating other programs.

> It would make sense to have the shell signal command completion to the terminal emulator, and let the terminal emulator do whatever it wishes with that information, which could include resetting any garbage state.

The thing is, it kinda works this way already. I'm not that knowledged about the actual interaction, but the shell already tells my terminal what the current directory is, which programs it has invoked, so that my terminal emulator can show me this in the chrome.

Ok, so my stance is: Yes it is not the job of the shell to modify the output of some program, but it is the job of the shell to tell the terminal emulator to do that, when the user requests this. I'm positively minded, that actually someone can chime in and say "ah, that's just not the default, you can configure bash, readline, etc. to do that though." I think the thing is, that bash just assumes that programs are POSIX-compliant and POSIX specifies, that every programs outputs a newline. Actually POSIX doesn't define it as newline, it defines it as the end of line. A program that forgets LF doesn't have forgotten to advance output a newline, it has output an incomplete line in that reading.

tuetuopay

3 months ago

> a command outputting an incomplete line without a line terminator is producing garbled non-textual output

I would argue that no, there are many valid cases for commands to not produce a final \n in their output. The first example that come to mind is curl'ing a REST API whose body is a single line of JSON. Many of those will not bother with a final \n, and this does not qualify as "garbled output" in my book. I would even go as far as saying that a shell just printing the prompt at whatever place the cursor happens to be is a side-effect of how terminal emulation works and the fact it's just a character based terminal.

This is actually something that Warp does pretty well, with a strong integration with the shell where your command is in a dedicated text box, by the virtue of it being GUI and leveraging GUIs. (I don't use it however, I'm too much of a sucker for dense UIs).

However I do agree with your argument that it's not the role of the shell to protect you against `cat /dev/urandom` or `cat picture.png`. And fish indeed does not try.

IMHO a shell is built for humans when in interactive mode (one of the raison d'être of fish), and the lack of final \n is such an annoyance that handling this specific edge case is worth it.

schoen

3 months ago

I understand the terminal-garbling issue and know that I should run "reset" in this case (and that it wasn't the shell's fault), but I bet a lot of users who aren't very familiar with this might feel that the shell is "in charge of" the terminal or "in charge of" the whole interaction, and so that it actually should be more proactive in making sure that the terminal is in a visible sensible, usable, understandable state as often as possible -- in this case probably whenever a program exits and a new prompt is displayed?

kevin_thibedeau

3 months ago

> The newline is a line terminator, a command outputting an incomplete line without a line terminator is producing garbled non-textual output.

A command could very well be manipulating the cursor on its own and intentionally not writing newlines when it wants to overwrite text such as in a progress bar.

latexr

3 months ago

> seams

The correct spelling is “seems”. I first assumed it was a typo, but since you did it twice I thought you might like to know.

probably_wrong

3 months ago

Depending on how you define "bash" and "bug", funny things happen when you run on a computer with 0 remaining hard drive space.

CaptainOfCoit

3 months ago

To be fair, bash won't be the only thing struggling when you end up in that state.

AdieuToLogic

3 months ago

> Joking aside I can’t ever remember seeing a bug in either bash or zsh, never seen either crash or segfault and anytime I’ve had weirdness it’s always turned out to be me missing something.

Given that this statement begins with "joking aside", I have to assume it is either a meta-joke or an uninformed opinion. Taking the subsequent sentence into account thoroughly reinforces the former.

Well played. :-)

PokestarFan

3 months ago

I've been able to trigger a segfault in zsh with certain plugins, a directory with a lot of files/folders, and globs with a bunch of * characters.

tuetuopay

3 months ago

The only bug with it was due to my own stupidity. I wanted a quick way to see how fast a drive was, thus sending one of its large files to /dev/null was fine. Except I went too fast and cp'd the file to /dev/null.

It took a while before noticing I had no more /dev/null on the machine (read: the time needed to fill the rootfs). In a panic, I removed the file.

Seeing the machine collapse due to /dev/null missing was fun.

augusto-moura

3 months ago

Wait, you can actually remove /dev/null? I always thought of it as a special driver file

I guess that might not be true for all nixes out there

dredmorbius

3 months ago

/dev/null is a device file, and can be removed by root, or any user with write access to the /dev directory itself.

You can recreate it with 'mknod /dev/null c 1 3; chmod 666 /dev/null'.

The '1 3' are the major and minor device numbers, respectively, which are assigned / maintained by LANA, the Linux Assigned Numbers Authority.

RiverCrochet

3 months ago

Each item in the unix filesystem can be one of the following: file, directory, symlink, device node, socket, fifo.

So nothing's stopping you from making it a normal file and capturing all the output programs send to it.

For super funsies you can make it a symlink or socket, but I think most programs won't work if it's a socket.

Nothing also is stopping you from removing it and mknod'ing a /dev/null into another device file, such as the one /dev/full or /dev/zero uses, or /dev/fb0 if you wanna be really silly.

MartijnBraam

3 months ago

Ah you've never encountered /dev/null not existing yet, so when you try to trash data it will actually create a normal file there so every other program that uses it will actually append that file.

Luckily it's usually a tmpfs

CaptainOfCoit

3 months ago

> Ah you've never encountered /dev/null not existing yet

I feel like that'd happen because of some other bug, I wouldn't consider that a bug in /dev/null :)

SanjayMehta

3 months ago

False.

Wait: that's just not true.

Carry on.

seanhunter

3 months ago

That is literally what it was added to unix for.

cluckindan

3 months ago

Always instantly consistent, always available, and perfectly tolerant of partitioning.

Truly, it is the only database which can be scaled to unlimited nodes and remain fully CAP.

inopinatus

3 months ago

Enterprise DBAs will nevertheless provision separate /dev/null0 and /dev/null1 devices due to corporate policy. In the event of an outage, the symlink from null will be updated manually following an approved run book. Please note that this runbook must be revalidated annually as part of the sarbox audit, without which the null device is no longer authorised for production use and must be deleted

eru

3 months ago

Not just instantly consistent on one machine, but globally sharded all across the universe.

thfuran

3 months ago

It's really fast too.

ozim

3 months ago

I guess we have a perfect idea for vaporware here. (pun intended)

I am putting my marketing hat on right now.

the_jeremy

3 months ago

You've been beaten to the punch: https://devnull-as-a-service.com/

shakna

3 months ago

It's down!

    $ telnet devnull-as-a-service.com 9
    Trying 2001:19f0:6c01:497:5400:ff:fe69:8cbf...
    Connection failed: Connection refused
    Trying 45.76.95.197...
    telnet: Unable to connect to remote host: Connection refused

yccs27

3 months ago

> 85,66% guaranteed uptime (we need some sleep, too)

tgma

3 months ago

Always available? Clearly you have not experienced situations with no /dev mounted.

DonHopkins

3 months ago

Even worse, /dev/null replaced by a normal file!

pasteldream

3 months ago

One easy way to create such a situation is to use bwrap without --dev.

geoffbp

3 months ago

Is there a case where dev null can fail?

tgv

3 months ago

I can think of two: whe running out of file descriptors or memory. But then /dev/null1 would fail too.

mjb

3 months ago

Best of all, /dev/null is also serializable (but not strict serializable) under many academic and textbook definitions.

Specifically, these definitions require that transactions appear to execute in some serial order, and place no constraints on that serial order. So the database can issue all reads at time zero, returning empty results, and all writes at the time they happen (because who the hell cares?).

The lesson? Demand real-time guarantees.

mjb

3 months ago

This doesn't work as cleanly for SQL-style transactions where there are tons of RW transactions, sadly.

magicalhippo

3 months ago

Reminds me of how in the math lectures, our professor would always point out he was ignoring the trivial solution[1].

That /dev/null is ACID compliant is the trivial solution of databases.

Still, a jolly good read, and a nice reminder that concepts like ACID don't exist in a vaccuum.

[1]: https://en.wikipedia.org/wiki/Triviality_(mathematics)#Trivi...

rollcat

3 months ago

You can dismiss it as a triviality, but in CS it's always worth considering (what you assume to be) an "identity" value, and its edge cases. Does your DSP algorithm work with near-zero values as well as it does with "true" zero?

(hint: look up subnormal floats.)

magicalhippo

3 months ago

I was only dismissing it in the sense that if you were picking a database to use, you'd avoid the "trivial solution" of /dev/null.

yupyupyups

3 months ago

>a nice reminder that concepts like ACID don't exist in a vaccuum.

Except if it's in /dev/null?

rezonant

3 months ago

But is /dev/null web scale?

epistasis

3 months ago

Yes, /dev/null can even power sites like zombo.com

bottled_poe

3 months ago

What’s the I/O throughput of /dev/null ?

epistasis

3 months ago

Single client, I'm getting ~5GB/s, both on an 8-year-old intel server, and on my M1 ARM chip.

However with a single server, it doesn't perfectly linearly scale with multiple clients. I'm getting

1 client: 5GB/s

2 clients: 8GB/s

3 client: 8.7GB/s

fukka42

3 months ago

I'm easily reaching 30GB/s with a single client:

    dd if=/dev/zero of=/dev/null bs=1M status=progress
A second dd process hits the same speed.

epistasis

3 months ago

My artisanal architecture design uses writes with a few characters and uses unix pipes:

    yes | pv > /dev/null
I hope that in my next rewrite I can advance to larger block sizes.

fukka42

3 months ago

Interestingly I tried this as well and was disappointed with the results:

  yes $(printf %1024s | tr " " "y") | pv > /dev/null
About the same throughput as letting yes output a single character. I guess Unix pipes are slow.

rezonant

3 months ago

What's the best hardware for running a /dev/null instance for production?

__turbobrew__

3 months ago

A single resistor at ground voltage.

eru

3 months ago

That doesn't support expected features like 'stat /dev/null'.

epistasis

3 months ago

I usually do a kubernetes cluster on top of VMs. But sometimes when I really want to scale the standard cloud server less platforms all support /dev/null out of the box. (Except for Windows...)

wowczarek

3 months ago

> Except for Windows...

copy c:\file nul

It's been there since DOS or more likely CP/M :)

genewitch

3 months ago

   set "nul1=1>nul"
   set "nul2=2>nul"
   set "nul6=2^>nul"
   set "nul=>nul 2>&1"
just saw this in a .cmd script

epistasis

3 months ago

Still need an adapter library though! Fortunately there are about 7 competing implementations on npm and most of them only have 5-6 transitive dependencies.

dinkelberg

3 months ago

How did you measure this? Do you know that /dev/null is the limiting factor, or could it be the data source that is limiting?

CaptainOfCoit

3 months ago

You start dealing with Heisen-throughput at that point, it goes as high as you can measure.

jefftk

3 months ago

"The system transitions from one valid state to another" is clearly false: the system only has a single state.

mpyne

3 months ago

One of the first state machine you'll ever learn about in undergrad permits transitions from a state back to itself, so I don't see this as a barrier.

jefftk

3 months ago

The claim is not "it's a state machine" but about transitioning from one valid state "to another". That requires more than one state.

eru

3 months ago

And you can implement /dev/null with multiple states, as long as you make them all behave the same way.

exabrial

3 months ago

I saw a MongoDb implementation on Github awhile ago that was a wrapper around /dev/null. The thesis was if you're using MongoDb, you probably didn't weren't planning on querying anything later anyway.

dd_xplore

3 months ago

One question though, if for some reason a poorely designed app discards data through /dev/null, is it tamper proof? Meaning can any other process or user access that information? (In runtime)

dragonwriter

3 months ago

I think it is possible for a process with root to delete the existing /dev/null and replace it with a normal file (likely to produce system instability) or a new character device (could probably be mostly transparent to anyone who didn’t know where to look for it storing its data), in which case anything sent to it could be captured.

user

3 months ago

[deleted]

simultsop

3 months ago

You need an FAQ section, we have so many questions for this marvellous solution.

Is it portable to all linux distros?

Where is the ubuntu command to install it?

What license does it use, is it free or else?

Is it really open source or source only?

hmokiguess

3 months ago

I guess it is also idempotent then

imcritic

3 months ago

How does a disaster recovery plan with it look like?

tadfisher

3 months ago

There is never a disaster; reading from /dev/null will return the same result before and after any external event.

wolrah

3 months ago

/dev/null is globally redundant across almost every *nix-ish system in operation. Just reinstall your software on whatever is convenient and all the same data will be there.

mpyne

3 months ago

    sudo mknod /dev/null c 1 3 && sudo chmod 666 /dev/null
might do it on many systems

brunoborges

3 months ago

I get the joke, but IMO it doesn't pass Durability test, as what is sent to it (i.e. transactions) are not durable.

Durability in ACID is about the durability of the data that is sent to the database (in this ironic post, /dev/null) once committed.

"[...] completed transactions (or their effects) are recorded [...]"

But I will give it that ACI do make sense!

#PedanticMode

PTOB

3 months ago

Let's test that:

1. Nothing stored in /dev/null is durable. 2. Nothing is stored in /dev/null. 3. Ergo, /dev/null exhibits durability.

Thank you, I'll take my check at the door.

brunoborges

3 months ago

You are missing the part where the data did exist and that after something/someone sent it to /dev/null, the data was gone. Therefore, the data did not endure. The Durability test of ACID failed for /dev/null.

theandrewbailey

3 months ago

/dev/null is the ultimate storageless function. It's like serverless, but for PII, and deployable anywhere!

hshdhdhehd

3 months ago

It is also local first, low latency, data residency compliant, SOC2 compliant, zero dependency and webscale.

schonfinkel

3 months ago

Does it have sharding? I heard sharding is the secret sauce for webscale.

rollcat

3 months ago

You can deploy /dev/null on any number of nodes, and expect exact consistency, high availability, and perfect partition tolerance with concurrent writes and reads bounded only by your hardware/kernel.

yard2010

3 months ago

I love vacously truths (not sure if this is how you say it in English)

All the people I've met in London were androids.

tczMUFlmoNk

3 months ago

The term is correct. Grammatically, we would say, "I love vacuous truths", or, "I love vacuously true statements". (To my ear the second version sounds very slightly more appropriate, because in mathematics "vacuously true" is a bit of a set phrase, but both are fine.)

1970-01-01

3 months ago

So if you could somehow get something stuck in /dev/null would it cause a panic or what happens?

bitwize

3 months ago

Yes, but does it support sharding? Sharding is the secret ingredient in the web scale sauce.

user

3 months ago

[deleted]

idontwantthis

3 months ago

This reminds me of how I would write a HashCode implementation on intro CS exams in college:

‘return 5’

raggi

3 months ago

rollcat

3 months ago

I understand this is supposed to be satire, but IMHO a well-executed joke should still be well-written and easy to follow. This "<statement> unless <condition>" is just terrible to read, and I can't even tell if FFI is necessary here, or a part of the joke. Funny not funny.

raggi

3 months ago

There was quite a different context when it was written 15 years ago, but essentially the same root jokes.

novoreorx

3 months ago

What a weird title, you can say it's ACID but it's not a database

sevg

3 months ago

> What a weird title, you can say it's ACID but it's not a database

You’re right, we should ban jokes that aren’t 100% correct!

novoreorx

3 months ago

Sorry if you feel my words mean. I'm not criticizing the joke, I just think it could make a better title, even for a joke, by adding quotes around "database" or calling it a "storage service," since it does allow data to be read. A good joke is both entertaining and difficult to deny.

gunalx

3 months ago

You say it is always empty, but. I have seen weird issues coming from /dev/null not actually being empty but being a file or symlink (dont remember) With garbage data.

yuppiemephisto

3 months ago

And the axiom of empty set is an inaccessible cardinal axiom

HackerThemAll

3 months ago

That article is a stinky brain fart that happens when you think you're having a moment of genius at 2:00 am.

dzogchen

3 months ago

It's ACID compliant yes, but it is not a database.

sph

3 months ago

It's ACID compliant. But it's not a database.

ozim

3 months ago

W just need R&D money to solve reading back from it, but that's just a matter of time we can definitely solve it in a year or two.

This tech is just around the corner I promise, then we will be first to the market and all the big tech companies will want to buy us out, imagine how much we can earn.

/s

sph

3 months ago

If you have infinite time, you can find your data in /dev/random

ozim

3 months ago

If you pay or get some people to finance R&D we can make it work, I guess we could market it as data recovery solution because I guess we can find every data in there, even from thumb drive someone lost in 2004.

jerf

3 months ago

It's nearly solved now.

"ChatGPT, I had a database here but it seems to have gone missing. It had a table with "User", "Email", and "Amount Paid"; can you reconstruct it for me?"

...

"I dunno boss, that's what the AI said."

torcete

3 months ago

I was reading on the information paradox on black holes. I wonder if the same paradox applies to /dev/null :-D

keithnz

3 months ago

took a while to pipe my multi-terabyte db to /dev/null but now that I have I'm saving a ton of money on storage.

dheera

3 months ago

I guess /dev/null is also an excellent source of investment advice, you are guaranteed to not lose money

taftster

3 months ago

Ah, how cute. An actual "old school" blog. Nostalgia. Tears in eyes.

https://jyu.dev/blog/

And the production of articles is about right too.

    . "Hello World" - The start of something great. [Dec 2024]

    . "Comparison is the Thief of Joy" - Link to another article. [Apr 2025]

    . "/dev/null is an ACID compliant database" - Funny, insightful. [Aug 2025]
That read about like my blog 20 years ago.

Funny post though, good read!

user

3 months ago

[deleted]

DeathArrow

3 months ago

More than that, /dev/null is infinitely scalable.

user

3 months ago

[deleted]

johnfn

3 months ago

Not only that, it provides all 3 components of CAP!

_joel

3 months ago

The Jespsen tests pass quickly too!

BiraIgnacio

3 months ago

A strong business opportunity right there.

layer8

3 months ago

Not on Windows.

munchlax

3 months ago

You could emulate it. Open windows, throw everything out, close it.

zdw

3 months ago

The RSS feed on this site is broken.

justinhj

3 months ago

Add an mcp server and I'm in

amai

3 months ago

Can it rollback transactions?

tonyhart7

3 months ago

it looks promising but what about AI /dev/null usage????

user

3 months ago

[deleted]

senfiaj

3 months ago

The author is a genius. If Amazon used /dev/null instead of DynamoDB, we would not experience such terrible outages.

luckystarr

3 months ago

Now make an algebra out of the CAP theorem. It's not already one, isn't it? Didn't read the paper.

Perz1val

3 months ago

Don't forget to feed your void. `dd if=/dev/zero of=/dev/null bs=500M count=1`

ramon156

3 months ago

I'm gonna be that guy, tyop at the bottom

> entreprise

QuiCasseRien

3 months ago

Fast and easy to read, funny and fuckingly true !

best post of the week ^^

charcircuit

3 months ago

/dev/null is not a database. By this logic is a hard disk a database, is a CD a database. No. They are storage mediums. You could store a database on them, but they themselves are not a database.

Considering there is no way to read back data written to /dev/null it will not be useful for storing database data.

jonathrg

3 months ago

You can store any data as long as it doesn't contain any ones

saltcured

3 months ago

And, you don't depend on it remembering how many zeros you wrote last.

user

3 months ago

[deleted]

chrisweekly

3 months ago

seems you've missed the joke

charcircuit

3 months ago

It's not a funny one if it was one. Of course something is going to be a bad database if it's not a database.

brobbin

3 months ago

It's nerd humor. You're not supposed to find it funny, but nod along approvingly while noticing how awfully clever you are for noticing the attempt at being funny.

dmytrish

3 months ago

Considering that D in "ACID" stands for "durable", it's a pretty sloppy joke.

jfengel

3 months ago

It's not a great joke, to be sure. But the essence of it is that it's a good database, by relevant but inappropriate standards.

tgv

3 months ago

Insufficient/incomplete rather than inappropriate, perhaps?

jfengel

3 months ago

The problem with the joke, as I see it, is that it only works with a colloquial definition of ACID. If it worked with a formal definition, it would be funnier by having a twinge of insight.

It's as if the joke requires two steps away from reality: first to apply the definition to a domain where it doesn't apply, then mis-reading the definition to make it fit. Having to go two steps like that spoils the feeling of insight that makes a joke like this work.

The article doesn't belabor the gag, which is a point in its favor. It has to hit you with its punch line and then quit before it wears out its welcome.

voidfunc

3 months ago

"Its not funny" says the one guy in a room where literally everyone else is laughing and riffing on the joke.

Your humor unit might be defective.

user

3 months ago

[deleted]

user

3 months ago

[deleted]

sevg

3 months ago

[dead]