Lewis Campbell
@LewisCTech
Followers
1,091
Following
228
Media
261
Statuses
4,585
Logs, events, #localfirst , software deployed in the field. Amateur systems programmer. Unilateral writes.
New Zealand
Joined November 2022
Don't wanna be here?
Send us removal request.
Explore trending content on Musk Viewer
taeil
• 852623 Tweets
#湊あくあ卒業ライブ
• 754053 Tweets
ホロライブ
• 207495 Tweets
あくあ色
• 170103 Tweets
Chiesa
• 119021 Tweets
伝説のアイドル
• 64578 Tweets
#TaraftarİstifaBekliyor
• 59378 Tweets
BBドバイ
• 45504 Tweets
最高のアイドル
• 44163 Tweets
コロナ対策
• 37694 Tweets
最高のライブ
• 29778 Tweets
たんのこと
• 29279 Tweets
あくたん6年間
• 23533 Tweets
スタテン
• 19915 Tweets
西鉄バス
• 19680 Tweets
テイルさん
• 15960 Tweets
#水曜日のダウンタウン
• 15507 Tweets
カグラバチ
• 15452 Tweets
ドーピング
• 13673 Tweets
おつあくあ
• 12472 Tweets
オースティン
• 11521 Tweets
ベルーナドーム
• 11506 Tweets
BBちゃん
• 11121 Tweets
サイヤ人級
• 11062 Tweets
"Delve' is not a fancy word. It's one syllable. It's been used continuously for 6000 years. It's a word a child would know. Shakespeare used it.
This is unacceptable for an educated native English speaker.
95
3K
9K
@LucyXIV
There's no one I sympathise with more than Harvard PhDs who run million dollar companies that are micro-aggressed by their Uber Black drivers.
Truly the real victims.
5
11
3K
@paulg
"Bad writers, and especially scientific, political and sociological writers, are nearly always haunted by the notion that Latin or Greek words are grander than Saxon ones" - George Orwell
There's also this, from Nineteen Eighty-Four:
12
84
637
Does anyone ever see this screen and basically decide "you know what, I don't need to use github today"?
87
21
569
@mkaleel
LOL that's right he calls his blogs "essays" doesn't he. The man lecturing us all on not trying to sound smart calls his blog posts "essays".
21
96
518
@db_witch
They had to do "the toothbrush moustache having austrian man" on a video a few days back.
Though they did say he died by "checking to see if his skull was bulletproof" which made up for it.
1
3
288
@martinlyncroft
"delve" is a direct descendent of Proto Indo-European *dʰelbʰ.
*dʰelbʰ -> *delbaną -> delfan -> delven -> delve
1
18
277
"Far, far below the deepest delving of the Dwarves, the world is gnawed by nameless things."
The Lord of the Rings is so beautifully written. Tolkien was a wonderful writer.
...I mean not compared to famous essayist Paul Graham, no one is. But definitely above average.
6
71
163
@the_aiju
I strongly suspect a lot of our future paradigms will either be re-discovered or re-invented.
5
3
142
@kitten_beloved
@moonbeamdreams_
Bullshit. Loads of conventially ugly people date. All the time. And get into relationships. And have kids. You think every dad is attractive?
Yes they will get rejected more than someone who is conventionally attractive. Still worth it.
5
1
125
Small example of how expressive the
@ziglang
type system is.
I want a buffer of Events, but don't know what kind yet. so I pass in B which is a compile time function of type -> type.
I've only seen this kind of type expressiveness in OCaml. Definitely not in rust.
8
10
127
@RiverTamYDN
I envy the life that you've lived if you haven't met people who would struggle with that question.
4
0
112
@paulgb
This kind of pedantry warms my heart.
Also, chimpanzees are not monkeys, English lacks an informal 'you' not a formal one, // comments came from BCPL not C++, and no I am not "close" to East Asia just because I am far away from you
4
2
110
@StatisticUrban
I don't get it. Pretty women, handsome men. What's stopping them? It's not like they have our anti-natalist propaganda.
39
1
97
I once again feel like switching languages for Interlog, from Rust to Zig.
I do like Rust, the tooling is so good, I like the expressiveness (iterator chains, monadic error types, operator overloading), I like that it's both a good systems language and a good high level
14
3
96
@_Felipe
I contracted at a place with this very problem - needed to send big lat long pairs to a mobile app, and it was too slow.
I suggested just sending a binary array of floats and chunking it, and they were not happy about the suggestion.
As an aside, is using an object for each
10
0
93
And so it begins - the original LSM tree paper, all 32 pages. Doubt I'll make much of a dent in it tomorrow, but one has to start somewhere.
3
4
90
Highly recommend anyone interested in CRDTs to read this article by
@tantaman
.
Covers the motivations of CRDTs, and issues with "why not just do..." really well. And describes the Gset, showing how simple and effective CRDTs can really be.
0
14
85
Is the universe telling me to become a systems programmer?
I spent hours today reading and discussing a paper about a unix syscall. My brain is pretty spent, this was the very edge of my understanding. And yet I didn't stop. Is it time to give up business software consulting?
5
2
70
@paulgb
Are you broadly familiar with the tu/vous distinction in French? or du/Sie in German or tu/usted in spanish?
English had that to, it was thou/you. So it's not that we lack a 'formal' 2nd person pronoun; we lack an informal one.
2
0
70
"The log is the DB, everything else is just a cache" lives rent free in my head.
So for multi-master systems, we takes the log/DB, cache it as a set, (causal history?) , and if the causal histories (caches) are equal, it's converged.
DB's don't converge, caches do...??
5
7
68
Can anyone recommend something on the 'why' of object stores like S3? There's a million tutorials of how to make it do the things it can do, but I have to admit I don't understand the motivation of object storage in the first place. Papers would be great.
9
6
67
After doing a bit of work on this, Zig is 100% the right choice for this project:
- libc is opt in, not opt out
- I can do it without dependencies (equivalent of rand and rustix is built into the stdlib)
- ArrayListUnmanaged saves me writing my own fixed capacity vectors
-
I once again feel like switching languages for Interlog, from Rust to Zig.
I do like Rust, the tooling is so good, I like the expressiveness (iterator chains, monadic error types, operator overloading), I like that it's both a good systems language and a good high level
14
3
96
4
0
60
@helloitsolly
You making this public and complaining about it reflects more poorly on you, than it does the freelancer.
All they did is use the term 'sign on bonus' incorrectly, while you've shown the world that you view private negoations as a valid source of twitter engagement material.
1
0
55
@ziglang
is the most ergonomic bit bashing language I've ever seen. Need an 80 bit integer? Sure, here you go.
1
13
54
Been listening to
@TigerBeetleDB
talks and getting really inspired. Them digging through old papers to produce a superior, clean room solution to real world problems they've seen is just so cool to see.
1
2
54
@iavins
"You read Lamport '78, implemented a few CRDTs just like the papers showed you, and now you're writing "dist sys" in your HN profile. You feel like an imposter because you are one brother."
0
4
53
Enjoyed this talk from
@adymitruk
. A lot of good ideas I've seen else where are being melded here - event sourcing, strong decoupling, DDD... also seeing a lot of synergy here with supply chain reference models. Will give event modelling a closer look.
1
6
53
So proud of my daughter. Not even 8 months old and she's already reading Lamport's "Time, Clocks" paper.
1
0
50
Everytime I play around with Zig, I'm impressed with its singular focus on systems programming.
Don't agree with all the design decisions, but the focus really shows. Just the most ergonomic way to dealing with bytes and memory I've ever seen.
5
2
51
@dieworkwear
There's something weird about seeing "Carthage Delenda est" in Blackletter, on a t-shirt.
4
0
50
Re-watching some
@TigerBeetleDB
Direct IO propaganda, to remind myself why I'm designing my own read cache instead of using the kernel.
(Bytes and caches are hard)
2
5
49
@TheAnkurTyagi
I don't see how a developing economy can become an advanced economy in this era of mass migration to the western world.
If all the ambitious, dis-satisfied people leave, how can things meaningfully improve?
I understand why people would want to. But the question remains.
12
2
42
Working on a distributed log from the ground up, using direct IO. Very local first and event sourcing inspired.
Early days. Any eyeballs, constructive criticism or even pull requests very welcome.
0
10
45
@p1xelHer0
I genuinely think modern frontend engineering culture is incapable of this.
You would need a team of weirdos.
I am deadly serious btw.
4
1
45
Very interesting article (that got Dunning-Kruger'd in the HN comments). A "RAM-first" database, parallels with event sourcing.
1
7
41
Tigerbeetle has given a lot to the community. The talks are top notch and are directly responsible for me getting into things I thought were "too difficult"; consensus, LSM trees, direct IO, LMAX architecture, and deterministic simulation testing.
Also the code is right there...
I just listened to a podcast with the CEO of TigerBeetle (financial transaction database) and it was SO cringe.
He praises the product as some kind of tech miracle, which IMO is an immediate red flag to anyone who has been in tech for at least a few years.
He talks about
19
1
37
1
4
41
Test results for one hour of simulation time.
A bit over a million events, for 80 seconds real time. Everything indexed and using transaction buffers. Finally none of my asserts are tripped!
A lot of work to do:
- disk interface is low level, but has no faults
- need to
4
3
41
@paul_snively
Got back into F# recently. It's very productive for me. It's not the best at anything, but it's like 4/5 in *everything*. And the only time I'm "fighting the language" is when i get syntax wrong (I'm rusty).
Really recommend people try it.
0
7
37
@DanielW_Kiwi
It's a thing inside a thing and you can change the inner thing but it will still be in the outer thing.
5
2
37
@BenFiliatro
Mate none of the 'tech girls' I follow are doing stuff like that. They're just coding. Says more about your feed than anything :p
0
0
36
@hardyrarso
@TigerBeetleDB
@jorandirkgreef
I'm also inspired by Tigerbeetle. It's a perfect storm:
- clean room design (every coders favourite three words)
- based on an 80s research paper that was ahead of its time
- solving real world problems the founders encountered
- talks are refreshingly positive. we need this!
2
2
30
You ever see the same term pop up in a few places and think "hmmm"?
@TigerBeetleDB
often talks of "fault models". Wonder if theres more to this idea than I think.
(Paper is "A Transaction Model", Jim Gray, IBM Research Laboratory 1980)
0
2
32
Shameful confession - I've started using rust again.
Going much better. The trick is to never listen to the compiler when it says "hey you've upset the borrow checker, try this!". That just makes it worse. Instead refer back to the documentation to make sense of the first error.
6
1
30
Filesystems = bloat.
But in all seriousness if anyone is interested in distributed systems & storage, I highly recommend following tigerbeetle. I've learned so much trying to understand tweets like this LOL.
This is why TigerBeetle was designed to run on raw NVMe, replacing the filesystem with end-to-end checksums, for best performance and safety.
Then again…
With a storage fault model, TB is also designed (and tested) to recover from faulty I/O (if you must run on a filesystem).
3
19
120
0
0
31
Inspired by
@TigerBeetleDB
- and my unease at all the rust crates I need to combine http and property based testing - I've decided it's time to get into deterministic simulation testing. I figure it's best to add it early in a projects life.
Any tips for a beginner?
1
2
30
Any programmers here?
I am learning it again for the first time in years. It still feels fairly enterprisey, but it does compile very fast (unlike say rust/axum) and it does have a nice big std lib (unlike node).
18
5
39
Spicy saturday post - these programming believes hold people back:
- if it compiles, it works - aka types can replace tests
- programming paradigm partisanism; rabidly strong opinions about OO, Imperative, FP...
- skimming over error messages
- "I didn't learn that during my
5
1
29
Enjoyed this article by
@Horusiath
about Hybrid Logical Clocks.
It's an interesting idea but the original paper is not very readable, so it's always appreciated when there's a good blog post on it.
2
2
28
@lan8ach
Are the tech stacks so convoluted that being a junior just isn't viable anymore? you need 5 years experience trawling stack overflow
2
2
27
I'm basically only interested in 3 CRDTs - g-sets, multi-value registers, and OR-maps whose values are multi-value registers. These are the core constructs for database syncing insofar as I see it - the rest have applications in collaborative software.
2
2
28
It occurred to me recently that - some 10 or so years in - I'm not as good a programmer as I want to be.
Maybe at my age I'm just supposed to accept I've peaked (and become a product manager! (jk (or am I?))). But I still have a love for it, and wonder if I sit down and identify
5
0
25
@fasc1nate
Former British colony here. I'm so proud we sacrificed a generation of men so we could (checks notes) help the USSR occupy Central and Eastern Europe and give birth to North Korea.
4
0
26
@chinesegon
I'm sorry but I find this phrasing very funny. Like if the girls in SF were better looking he'd be fine with it. But they're ugly to boot!! This cannot stand!!!!
0
0
24
Good. This is a good book and it deserves the popularity.
Not just the content inside, the fact that every chapter has about 30 references. Great for deep diving.
you can just post this book's image with some quote and get a shitload of likes, it's hilarious.
25
16
1K
2
2
24
Oh yeah I'm looking for a technical job or contract.
I like events, syncing, reading dist sys papers, local first, and apps that work offline. I know most normal languages and a few abnormal ones.
0
8
24
@yacineMTB
Ehhh....
I like zig, but...
- tooling is nowhere near as good as rusts
- no operator overloading because "scary"
- no closures because "confusing"
- you have to write your own find functions
3
0
23
@thetimmorgan
When I was a young boy, and had no internet, if I didn't know a word on my native languiage, I looked it up in a dictionary.
An educated native speaker with hundreds of dictionaries at their literal finger tips should be ashamed for flinching at "delve".
0
2
23
Also - follow Joran and Tigerbeetle. Thanks to following TB I've gotten into deterministic simulation testing, direct IO, static memory allocation, and now the LMAX architecture. The cud definitely needs more chewing but a whole new world has opened up to me.
@iamatradernoob
@sunbains
Tips for going deep on databases:
1. Pick a conference, like FAST (nice because it’s less DBMS and more focused on the broader hardware/software interactions) and follow the papers/talks from there each year. They might not make sense. Keep chewing the cud.
2. A DBMS at heart
1
20
113
1
2
23
Tech Lead was the job I was best at. Maybe I just had great juniors and intermediates, but we knocked it out of the park. My main role was getting them out of pointless meetings and making it clear I would be to blame for any potential failures so they didn't worry about it.
If I plateau at Senior Software Engineer is that okay?
I’ve turned down Lead. I don’t want to deal with people more. I’m bad at it. I want to write code. Mentor a bit.
What’s wrong with that?
446
79
3K
1
2
22
@GarrettPetersen
I tell Germans I like Kraftwerk all the time. The real hate crime is that hardly any of them have heard Kraftwerk. What about the real victim - me?
0
0
21
Everything in distributed systems gets so much easier and more resilient if you relax consistency.
The data willl come when it's ready, just chill out and enjoy the journey!!!
2
2
21
Made a short rant video - read computer science papers! Wish I'd started years earlier.
1
1
21
Re-wrote DB logic. Ran it again in the deterministic sim tester for 1 sim minute. Old / New:
Real time = 01:16.8445814 / 00:05.8569270
Events generated = 93,996 / 93,996
Messages sent = 34,835 / 32,153
Events sent = 62,641,890 / 6,612,882
Avg events per msg = 23,356 / 2,466
1
0
21
Page 1-2 impressions:
- motivation is laid out very clearly. I should have read the abstract + info first before I ever did a web search
- many references to hard disk arm movement! I think of LSM trees as modern but this is '96
- examples are financial txn workflows...
And so it begins - the original LSM tree paper, all 32 pages. Doubt I'll make much of a dent in it tomorrow, but one has to start somewhere.
3
4
90
5
1
21
@moonbeamdreams_
Just like you're not obliged to be someones boyfriend/girlfriend, they're not obliged to be your platonic friend.
I get that these misalignments are painful, but I find it hard to read a great deal of malice or manipulation in them.
0
0
18
@t3dotgg
One hour is my cut off time. After that it's time to ts-ignore and move on with my life.
1
0
19
@michael_timbs
@tsoding
I am pretty sure to become a web dev he'd have to lose a solid foundation of knowledge and just binge framework tutorials.
1
0
19
@AvinashP6969
@TheAnkurTyagi
The only reason you have easy access to household help is because your country is so poor.
If you become an advanced economy, that goes away.
4
1
17
Playing around with direct IO in linux. Never had much reason to muck around with bytes as a frontend dev so this is quite fun.
1
1
17
I think I will stop using the term "CRDTs".
I'm interested systems that can be written to w/o coordination and sync predictably. And every single one of those will obey the CRDT laws, whether they know the term or not. Amazon Dynamo obeyed those laws, but it predates the term.
3
2
18
I think I'm at a career turning point. I've succeeded and enjoyed a lot of disparate things into my career and but I'm struggling to weave that into some kind of path, plan or direction. Or even job title.
1
0
18
@dejavucoder
@airkatakana
Look at the faces of the background people.
In the west, you speak up, and people look at you earnestly.
In the east, you speak up, and they're angry, annoyed and cringing.
0
0
17
@Rainmaker1973
Does no one else realise how easy it would be for him to learn French with that foundation?
7
0
18
@VCBrags
It's one of those things that'd be witty in a movie or tv show..
In real life, it's insufferable and incredibly cringey.
What's the television equivalent of "terminally online"?
2
0
18
@DVHenkelWallace
@penguinvondoom
@the_aiju
Are you serious? Like I expect that attitude from working programmers like myself. I had to be educated out of it. But researchers? That's sad. I love 70s papers lol.
1
0
16
Did you ever think to yourself "gee I love Kafka, but I wish it had less consistency?".
Then you may want to check out my database project!
1
3
17
@paraAax
@cremieuxrecueil
"Jamie pull up that video of a juvenile female chimp wrestling Aleksandr Karelin"
1
1
16
@joseph_h_garvin
@_Felipe
makse sense. it's like a compiler, it can do a lot, but it's best to make it's job easier.
0
0
17
The meaning of the term "CRDT" is really starting to drift.
Libraries like automerge and yjs are just *implementations* that happen to be a CRDT. But the idea of a CRDT itself is much older. I've seen "proto-CRDTs" described as far back as 4 decades.
2
1
17
@functi0nZer0
"Hey I saw you dancing in the pool with my zoom in binoculars. I could have easily gone down there and tried to ask you out in person but that seemed scary LOL. Anyway I paid the internet $1000 to dox you - will you marry me?"
1
0
17
@DanielW_Kiwi
This is why I brought a barebones mini PC as my main desktop. Had to put the ram in, SSD in, and put linux on it myself. But no windows BS.
1
0
16
I often list to distsys talks while I cook the family meal. Today I am enjoying this by
@DominikTornow
, 15:30 is giving me strong Jim Gray vibes!
1
0
16
Design patterns are one of the most badly understood things in all of software dev.
They're just a way to name certain common patterns that already occur in the wild. The point of putting it in a book was to make a shared vocabulary. I guarantee everyone's code has "design
3
2
16
Reading the architecture page of
@FireproofStorge
, a multi-master DB.
I'm not sure what a "Merkle clock causal event log" is but I think I need to find out.
2
2
16
RDBMS pushers: Don't use NoSQL! There's no schema, you have to write it in application code!
Also RDBMS pushers: Use ORMs and use it to write your schemas in application code.
2
2
16