When I run my query on the prod database and the DBA materializes behind me ⌘ Read more

Validation, Docs, tests, and database schemas from one source of truth
Article URL: https://github.com/justhamade/triadjs

Comments URL: https://news.ycombinator.com/item?id=48486577

Points: 3

# Comments: 1 ⌘ Read more

PgDog is funded and coming to a database near you
Article URL: https://pgdog.dev/blog/our-funding-announcement

Comments URL: https://news.ycombinator.com/item?id=48476466

Points: 4

# Comments: 0 ⌘ Read more

Spanish traders set the standard forGnuCash database design
Article URL: https://handson.money/blog/2026-06-06-horse-arse-and-design/

Comments URL: https://news.ycombinator.com/item?id=48444784

Points: 5

# Comments: 0 ⌘ Read more

pg_durable: Microsoft open sources in-database durable execution
Article URL: https://github.com/microsoft/pg_durable

Comments URL: https://news.ycombinator.com/item?id=48414367

Points: 9

# Comments: 0 ⌘ Read more

Film festival customer data exposed in hack of third-party ticketing platform
Melbourne International Film Festival organisers are investigating the hack, which has affected about 10 per cent of the festival’s total customer database. ⌘ Read more

Film festival customer data exposed in hack of third-party ticketing platform
Melbourne International Film Festival organisers are investigating the hack, which has affected about 10 per cent of its total customer database. ⌘ Read more

Models.dev: open-source database of AI model specs, pricing, and capabilities
Article URL: https://github.com/anomalyco/models.dev

Comments URL: https://news.ycombinator.com/item?id=48241172

Points: 3

# Comments: 0 ⌘ Read more

I’m a Normie. Can Normies Really Vibe Code?
Apparently anyone can vibe code anything these days. So Claude and I tried to make a database for tracking the petty grievances of the masses. ⌘ Read more

When the new client tells me they use a Google Sheet as a database ⌘ Read more

When I ran a massive update and the database hasn’t responded for a few minutes ⌘ Read more

When my database update that was supposed to take 30 seconds is still running after 5 minutes ⌘ Read more

When I discover all the business logic is handled in the database ⌘ Read more

National vineyard register welcomed by struggling wine industry
Grape growers have endured a tough few years and there are hopes that a national database will help to improve the industry’s fortunes. ⌘ Read more

When I see that the database has no foreign keys at all ⌘ Read more

When I start a database migration in production ⌘ Read more

When I realize all my test INSERTs were run on the production database. ⌘ Read more

When we run a mass update and the database just can’t handle it ⌘ Read more

When I’m told I’ll be in charge of the database redesign ⌘ Read more

@lyse@lyse.isobeef.org … I sure hope that they generate these files from the general terminfo database instead of maintaining their own DB. 😳

@movq@www.uninformativ.de I noticed that your feed’s last modification timestamp was missing in my database. I cannot tell for certain, but I think it did work before. Turns out, your httpd now sends the Last-Modified with UTC instead of GMT. Current example:

Sat, 03 Jan 2026 06:50:20 UTC

I’m not a fan of this timestamp format at all, but according to the HTTP specification, HTTP-date must always use GMT for a timezone, nothing else: https://httpwg.org/specs/rfc9110.html#http.date

At around 19 seconds in the video, you can see some minor graphical glitches.

Text mode applications in Unix terminals are such a mess. It’s a miracle that this works at all.

In the old DOS days, you could get text (and colors) on the screen just by writing to memory, because the VGA memory was mapped to a fixed address. We don’t have that model anymore. To write a character to a certain position, you have to send an escape sequence to move the cursor to that position, then more escape sequences to set the color/attributes, then more escape sequences to get the cursor to where you actually want it. And then of course UTF-8 on top, i.e. you have no idea what the terminal will actually do when you send it a “🙂”.

Mouse events work by the terminal sending escape sequences to you (https://www.xfree86.org/current/ctlseqs.html#Mouse%20Tracking).

ncurses does an amazing job here. It’s fast (by having off-screen buffers and tracking changes, so it rarely has to actually send full screen updates to the terminal) and reliable and works across terminals. Without the terminfo database that keeps track of which terminal supports/requires which escape sequences, we’d be lost.

But gosh, what a mess this is under the hood … Makes you really miss memory mapped VGA and mouse drivers.

@prologic@twtxt.net In my opinion, the integrity isn’t lost. The same input data always result in the same output hash, no matter when you calculate the hashes. It’s true that a corrupt database contents yields to corrupt hashes, but then you have a whole bigger problem than just receiving different hashes. :-D

@zvava@twtxt.net By hashing definition, if you edit your message, it simply becomes a new message. It’s just not the same message anymore. At least from a technical point of view. As a human, personally I disagree, but that’s what I’m stuck with. There’s no reliable way to detect and “correct” for that.

Storing the hash in your database doesn’t prevent you from switching to another hashing implementation later on. As of now, message creation timestamps earlier than some magical point in time use twt hash v1, messages on or after that magical timestamp use twt hash v2. So, a message either has a v1 or a v2 hash, but not both. At least one of them is never meaningful.

Once you “upgrade” your database schema, you can check for stored messages from the future which should have been hashed using v2, but were actually v1-hashed and simply fix them.

If there will ever be another addressing scheme, you could reuse the existing hash column if it supersedes the v1/v2 hashes. Otherwise, a new column might be useful, or perhaps no column at all (looking at location-based addressing or how it was called). The old v1/v2 hashes are still needed for all past conversation trees.

In my opinion, always recalculating the hashes is a big waste of time and energy. But if it serves you well, then go for it.

@zvava@twtxt.net The problem you now then is you lose integrity of the message content if you compute the hashes at runtime rather than on the way in. So if your message content or database becomes corrupt in any way, so do your hashes.

@zvava@twtxt.net I might misunderstand what you wrote, but only hashing the message once and storing the hash together with the message in the database seems a way better approch to me. It’s fixed and doesn’t change, so there’s no need to recompute it during runtime over and over and over again. You just have it. And can easily look up other messages by hash.

When I have to explain to the client that we can’t use their Excel 2010 file as a database ⌘ Read more

** SQL Injection: Listing Database Contents on Non-Oracle Databases**

Image

UNION-based SQL injection used to enumerate database tables, extract credential columns, dump usernames and passwords, and log in as the…

[Continue reading on I … ⌘ Read more

When the database takes 10 minutes to respond ⌘ Read more

**How I Used Sequential IDs to Download an Entire Company’s User Database (And The Joker Helped) **

Image

Hey there!😁

[Continue reading on InfoSec Write-ups »](https://infosec … ⌘ Read more

I had a looksie (just to be sure) at the database, and they were thankfully legit test events. But this did spark/trigger me to make sure I have some form of anti-spam measures in place. So I added some per-event / per-rsvp rate-limiting and honeypot(s).

Salesforce defends security practices after Qantas hack
Hackers used AI-powered voice phishing to trick employees into granting database access. ⌘ Read more

How I Mastered Blind SQL Injection With One Simple Method

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Transforming my web security skills by learning to listen to a silent database

[Continue reading on InfoSec Write-ups »](https://infosecwriteups.com/how-i-mastered-blind-sql-injection-w … ⌘ Read more

** Encrypt & Decrypt Database Fields in Spring Boot Like a Pro (2025 Secure Guide)**

Image

“Your database backup just leaked. Is your data still safe?”

[Continue reading on InfoSec Write-ups »](https://infos … ⌘ Read more

How to Add MCP Servers to Claude Code with Docker MCP Toolkit
AI coding assistants have evolved from simple autocomplete tools into full development partners. Yet even the best of them, like Claude Code, can’t act directly on your environment. Claude Code can suggest a database query, but can’t run it. It can draft a GitHub issue, but can’t create it. It can write a Slack message,… ⌘ Read more

How to store ordered information in a Relational Database (2015)
Comments ⌘ Read more

Django: one ORM to rule all databases
Comments ⌘ Read more

Hopefully I can muster up the energy to start this new project:

Put up lots of thermometers and hygrometers in the apartment, have them report their readings wireless to a database.

I suspect that I’ll have to “build” these myself, because ready-to-use kits most like require some sort of cloud service. Dunno, haven’t checked yet.

@alexonit@twtxt.alessandrocutolo.it My problem is I don’t see a world where we don’t employ some form of cryptography to use as keys for threads in databases and other such things honestly. I’m not going to use url#timestamp as keys.

I corrupted my SQLite test database with sed -i s/… $(find …). Clearly, I found too many files. That’s the signal to go to bed.

@kat@yarn.girlonthemoon.xyz @kat@yarn.girlonthemoon.xyz Pretty sure I have many more mentions in the database than the one and only one I see hmmm 🤔 – I’ll have a look at the code when I can and the SQL query it’s using

Chances are the database bought wasn’t cheap at all and was aold by some scam company that probably ripped them from six figures or more for a database that’s full of rubbish. 🤣

Now that’s interesting. Some of these bots start crawling at URLs like this:

https://uninformativ.de/projects/lariza/NetTracer-Scenes/GPUTracer/multipass/xlonitor/http-collect/getpw

That is obviously completely wrong. But I can explain it. Some years ago, I screwed up my nginx rewrite rules, and that’s how these broken URLs came to be.

It all redirects to /git now, which is why that endpoint sees so much traffic lately.

But what does that mean? Why do they start there? I can only speculate that this company bought an old database of web links and they use that to start crawling. And it was probably a cheap one, because these redirects have been fixed for quite a long time now.

linode’s having a major outage (ongoing as of writing, over 24 hours in) and my friend runs a site i help out with on one of their servers. we didn’t have recent backups so i got really anxious about possible severe data loss considering the situation with linode doesn’t look great (it seems like a really bad incident).

…anyway the server magically came back online and i got backups of the whole application and database, i’m so relieved :‘)

[$] The second half of the 6.16 merge window
The 6.16 merge window
closed on June 8, as
expected, containing 12,899 non-merge commits. This is
slightly more than the 6.15 merge window, but well in line with expectations.
7,353 of those were merged after
the summary of the first half of the merge\
window was written. More detailed statistics can be found in
[the LWN kernel source database](https://lwn … ⌘ Read more

Making database systems usable
Comments ⌘ Read more

From Zero to Full Stack Gren with a Database
Comments ⌘ Read more

微服務架構：必懂的 5 種設計模式
1. Database per Service (每個服務一個數據庫)目標 / 目的實現微服務之間的松耦合。 增強服務的獨立性、可伸縮性和數據封裝。 關鍵概念 / 工作方式每個微服務管理自己的私有數據庫。 數據庫只能由擁有該服務的服務訪問。 強制執行清晰的邊界並促進單一職責原則。 數據隔離 減少服務之間的依賴。 技術靈活性 服務可以使 ⌘ Read more

** “Before injection, understanding” — What every hacker needs to master before exploiting a NoSQL…**

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NoSQL database types

[Continue reading on InfoSec Write-ups »](https: … ⌘ Read more

A Survey of Database TLS Libraries (2022)
Comments ⌘ Read more

The Database Row That Did and Didn’t Exist
Comments ⌘ Read more

VectorVFS: Filesystem as a Vector Database
Comments ⌘ Read more

Do you really need a Vector Search Database?
Comments ⌘ Read more

Throwing it all away - how extreme rewriting changed the way I build databases
Comments ⌘ Read more

@kat@yarn.girlonthemoon.xyz yes, both the newsletter and the podcast, from time to time.

@prologic@twtxt.net I was not expecting much, but since the list of restaurants near company buildings, was hard coded into it, I did expect it to at least copy the menu text, from the websites, in its database. Ironically, the only restaurant where it got something right, is the only one, where the websites has the text as a transparent PNG, the AI has to convert to text.

DataFusion - The Database Building Toolkit
Comments ⌘ Read more

Observability 2.0 and the Database for It
Comments ⌘ Read more

Trump’s War on Measurement Means Losing Data on Drug Use, Maternal Mortality, Climate Change and More
Alec MacGillis,  Reporters  -  ProPublica

_Stephan: Fascist authoritarians like Despot Trump and his minions don’t ever like objectively verifiable databases to be compiled or maintained because the information can be used to prove how inferior their social policies are. If you have been reading my research papers (see SR arch … ⌘ Read more

BL!ND.exe || Breaching Databases in Total Silence ⌘ Read more

I asked ChatGPT what it knows about Twtxt 😂 And surprisingly it’s rather accurate:

Twtxt is a minimalist, decentralized microblogging format introduced by John Downey in 2016. It uses plain text files served over HTTP—no accounts, databases, or APIs.
In 2020, James Mills (@prologic@twtxt.net) launched Yarn.social, an extended, federated implementation with user discovery, threads, mentions, and a full web UI.
Both share the same .twtxt.txt format but differ in complexity and social features.

**I asked ChatGPT what it knows about Twtxt 😂 And surprisingly it’s rather accurate:

Twtxt is a minimalist, decentralized microblogging form …**
I asked ChatGPT what it knows about Twtxt 😂 And surprisingly it’s rather accurate:

Twtxt is a minimalist, decentralized microblogging format introduced by John Downey in 2016. It uses plain text files served over HTTP—no accounts, databases, or APIs.

In 2020, James Mills ( @prologic @twtxt.net) launched Yarn.social, an extended, federated implementat … ⌘ Read more

@bender@twtxt.net Exactly. I suspect it was because of sqlitebrowser also accessing the database in parallel to debug the original issue.

So far, I have not found the exact reason why some replies don’t show up. When I do not filter for unread messages and show all, though, I actually see them. So, there’s that.

I just noticed that my unread messages counter was off by quite a bit. It showed 8, but I only saw one unread message. Even after restarting my client, which recalculates the number of unread messages, it remained at eight. Weird. Looking in the database revealed that this is indeed correct.

Apparently, my query to build up the message tree must be incorrect. It somehow misses seven messages. They all are orphaned, maybe that’s a clue. However, generating missing root messages (and thereby including the replies) typically works just fine. Hmm.

@movq@www.uninformativ.de json and database put together sounds terrifying. i must try jenny

jenny really isn’t well equipped to handle edits of my own twts.

For example, in 2021, this change got introduced:

https://www.uninformativ.de/git/jenny/commit/6b5b25a542c2dd46c002ec5a422137275febc5a1.html

This means that jenny will always ignore my own edits unless I also manually edit its internal “json database”. Annoying.

That change was requested by a user who had the habit of deleting twts or moving them to another mailbox or something. I think that person is long gone and I might revert that change. 🤔

The Gov Defunded the CVE! And Then it Didn’t! (It Gets Weirder.)
This story of how the Common Vulnerabilities & Exposures Database almost (supposedly) went offline is truly bizarre. ⌘ Read more

@prologic@twtxt.net is it twice on database, or simply rendering twice? If you manually expunge it, will it affect the yarn?

(#qp5q6oq) @bender@bender LOL 😂 Bitcask is still the user database bahahaha 😅
@bender @twtxt.net LOL 😂 Bitcask is still the user database bahahaha 😅 ⌘ Read more

[$] Supporting untorn buffered writes
At last year’s
Linux Storage, Filesystem,
Memory-Management, and BPF Summit (LSFMM+BPF), there was a discussion about atomic writes that was
accompanied by patches to support the feature in the block layer, and for
direct I/O on XFS. That
work was merged, but another piece of that discussion concerned adding the
feature for buffered I/O, in part because the PostgreSQL database currently
has to jump through hoops to ensure that its writes are not “torn”
(partial … ⌘ Read more

@xuu@txt.sour.is Wow, that’s a giant graveyard. In my new database I have 16,428 messages as of now. Archive feed support is not yet available, so it’s just the sum of all the 36 main feeds.

Thanks, @movq@www.uninformativ.de!

My backing SQLite database with indices is 8.7 MiB in size right now.

The twtxt cache is 7.6 MiB, it uses Python’s pickle module. And next to it there is a 16.0 MiB second database with all the read statuses for the old tt. Wow, super inefficient, it shouldn’t contain anything else, it’s a giant, pickled {"$hash": {"read": True/False}, …}. What the heck, why is it so big?! O_o

A collection of postgreSQL patterns that you can use in other databases
https://mccue.dev/pages/3-11-25-life-altering-postgresql-patterns
#postgresql #databases

(Back in tt.) Well, it kinda worked. At least appending to the file. But my cache database got screwed up. I do not yet support replies, so the subject and and root hash columns have not been set at all, resulting in a message that is just not shown at all. I gotta do something about that next. The good thing is, though, after simply fixing the two columns the message appeared on screen.

wahhh i wanna work towards my dream of offering pay as you can web hosting (static & dynamic) but i don’t know how!!!!! i keep drifting towards hosting panels but i don’t exactly have fresh linux servers for those nor do i like the level of access they require. so i’m like ok i can do the static site part with SFTP chroot jails and a front-end like filebrowser or something…. but then what about the dynamic sites!!!!!!! UGH

granted i doubt i’d get much interest in dynamic sites but i’d like to do this old school where i can offer people isolated mySQL databases or something for some project (i’m thinking PHP based fanlistings), which means i could do it the old school way of… people ask me to run it and i do it for them. but i kind of want to let people have access to be able to do it themselves just short of giving them SSH access which isn’t happening

@andros@twtxt.andros.dev If something fits in a CSV file, it typically doesn’t require a database. I agree with that. Depending on the application, more complicated queries might benefit from a database, though. I don’t know awk very well, but I could imagine that grep, sed and cut reach their CSV processing limits rather quickly when you have to deal with escaped (multiline) fields.

I only very rarely have to deal with CSV files or databases in my day to day life. Maybe, these classic Unix tools offer some tricks I’m not aware of. When I have some more complicated CSV input, I generally reach for Python.

pls elaborate on a ‘p2p database’, ‘all story’ and ‘Registries’.

My first thought takes me to something like secure-scuttlebutt which it’s painful to sync data using clients, and too slow compared to downloading a text file.

Also I’d like for twtxt to avoid becoming an ActivityPub. Works well but it’s uses too many resources IMO.
https://kingant.net/2025/02/mastodon-the-cost-of-running-my-own-server/

I’m defending being able to self-host your Web client (like you’d do with a Wordpress, twtxt is a micrologging, at the end), instead of federated instances, so in a first thought I’d say Registries have many disadvantages being the first one that someone has to maintain them active.

What does the #twtxt community think about having a p2p database to store all history? This will be managed by Registries.

@prologic@twtxt.net We often turn to a database when we can use a plain text file, such as a CSV. With sed or awk, you can run simple queries without using a database.
Did I get the context right? 😀

**(#r5t4s6q) @andros@andros I’m not entirely sure what this means:

development that requires a database

Obviously I wasn’t in the di …**
@andros @twtxt.andros.dev I’m not entirely sure what this means:

development that requires a database

Obviously I wasn’t in the discussion so I feel like I’m missing some context here 🤔 ⌘ Read more

The other day, after a discussion online, we came to the conclusion that using awk+sed+tr could replace much of the development that requires a database. However, using SQLite to have a SQL syntax isn’t a bad idea either. What do you think?

Data Protection Working Group Deep Dive Session at KubeCon + CloudNativeCon London
Data on Kubernetes is a growing field, with databases, object stores, and other stateful applications moving to the platform. The Data Protection Working Group focuses on data availability and preservation for Kubernetes – including backup, restore,… ⌘ Read more

Trump administration shuts down national database documenting police misconduct
Gloria Oladipo,  Staff Writer  -

_Stephan: As part of his coup “king” Trump needs to be able to utilize the police for his deportation schemes and to suppress any demonstrations against his coup. So he has changed the laws in such a way that no documentation occurs of police misconduct. Here is a report of what he has done. It is getting very little media coverage bu … ⌘ Read more

I’m continuing my tt rewrite in Go and quickly implemented a stack widget for tview. The builtin Pages is similar but way too complicated for my use case. I would have to specify a mandatory name and some additional options for each page. Also, it allows me to randomly jump around between pages using names, but only gives me direct access the first, however, not the last page. Weird. I don’t wanna remember names. All I really need is a classic stack. You open a new fullscreen dialog and maybe another one on top of that. Closing the upper most brings you back to the previous one and so on.

The very first dialog I added is viewing the raw message text. Unlike in @arne@uplegger.eu’s TwtxtReader, I’m not able to include the original timestamp, though. I don’t have it in its original form in the database. :-/

Next up is a URL view.

I think it is not easy to implement, you need a database. Timeline is an elegant solution: read and sort.

FINALLY!! Got #Caddy server up and running and got rid of nginx proxy manager and Mysql database containers 🥳🥳🥳

What is clean architecture? That’s a good question.

You think of a pattern for ordering code with good decisions isolating technologies (you can change the web framework or database without break the business logic), easy to test (you only test interfaces and use cases), sharing code between frameworks (entities and use cases), scalability, modulations and standardizing names. Clean architecture is not perfect, it has a learning curve and some abstraction in each technology. You can even find rejection with yours colleagues.
I have a good article on this topic.
https://programadorwebvalencia.com/implementando-arquitectura-limpia-en-python/
#python

been playing with making fun scripts using charm CLI’s gum library :P

one that gets lyrics from an open lyrics database’s API and accepts input for artist & song names: https://asciinema.org/a/697860

and one that uses a user-provided last.fm API key to pull what’s currently playing or what last played on your account :) https://asciinema.org/a/697874

(#vzksboq) @kat Building from source and from the main branch is totally fine. In fact encouraged. I have a philosophy of main being stable …
@kat @yarn.girlonthemoon.xyz Building from source and from the main branch is totally fine. In fact encouraged. I have a philosophy of main being stable anyway and making sure backwards compatibility is kept in mind when changing things. i.e: No database migrations to run by hand or what not. ⌘ Read more

My journey as a speaker in Cloud Native Ayacucho: a young community embracing cloud native technologies
Community post by Daniel Israel García Bustinza, Ayacucho, Perú I am Daniel Israel García Bustinza, writing from Huanta, Ayacucho, Perú. I am a cloud solutions architect and database specialist, and I help organizations migrate to the… ⌘ Read more

**Problem 2: Your SSD-backed database has a usage-pattern that rewards you with a 80% page-cache hit-rate (i.e. 80% of disk reads are served d …**
Problem 2: Your SSD-backed database has a usage-pattern that rewards you with a 80% page-cache hit-rate (i.e. 80% of disk reads are served directly out of memory instead of going to the SSD). The median is 50 distinct disk pages for a query to gather its query results (e.g. InnoDB pages in MySQL). What is the expected average query time from your database?

Share your solution via Twtxt … ⌘ Read more

5 分鐘搞懂 Golang 數據庫連接管理
本文介紹瞭如何在 Golang 中優化數據庫連接，通過有效管理連接來提高應用程序吞吐量。原文: Optimizing Database Connections in Go: Improving Throughput by Managing Open Connections Efficiently[1]Go 的 database/sql 軟件包提供了自動化數據庫連接池，能夠幫助開發人員有效管理連 ⌘ Read more

Kubernetes for databases: weighing the pros and cons
Member post originally published on The New Stack by Kate Obiidykhata, Percona Over the past few decades, database management has shifted from traditional relational databases on monolithic hardware to cloud native, distributed environments. With the rise of microservices… ⌘ Read more

Cloud Neutral Postgres Databases with Kubernetes and CloudNativePG
Member post by Gabriele Bartolini, VP Chief Architect of Kubernetes at EDB Abstract This article delves into the concept of cloud neutrality— a term I prefer over agnosticism— in PostgreSQL deployments. It highlights the transformative impact… ⌘ Read more

Backup and recovery for Vector Databases on Kubernetes using Kanister
Community post by Pavan Navarathna Devaraj and Shwetha Subramanian AI is an exciting, rapidly evolving world that has the potential to enhance every major enterprise application. It can enhance cloud-native applications through dynamic scaling, predictive maintenance,… ⌘ Read more

Data Protection Working Group deep dive at KubeCon + CloudNativeCon Salt Lake City
Community post by Dave Smith-Uchida, Technical Leader, Veeam (Linkedin, GitHub) Data on Kubernetes is growing with databases, object stores, and other stateful applications moving to the platform. The Data Protection Working Group (DPWG) focuses on data… ⌘ Read more

iPad Mini 7 Benchmarks Confirm 8GB RAM, 5-Core GPU’s Slower Speeds
The seventh-generation iPad mini has now appeared on Geekbench, confirming that it has 8GB of memory and revealing how the 5-core GPU version of the A17 Pro chip performs.

Image

The new ‌iPad mini‌, identified as [iPad 16,2 on the Geekbench database](https://browser.geekbench.com … ⌘ Read more

@prologic@twtxt.net that “little database that could” is simply amazing, isn’t it? I run Conduwuit (nevermind, this one is RocksDB), and GoToSocial using it as a backend, no issues. And, of course, sqlite is the database of choice for a lot of things under iOS.

I demand full 9 digit nano second timestamps and the full TZ identifier as documented in the tz 2024b database! I need to know if there was a change in daylight savings as per the locality in question as of the provided date.

I demand full 9 digit nano second timestamps and the full TZ identifier as documented in the tz 2024b database! I need to know if there was a change in daylight savings as per the locality in question as of the provided date.

BTW this code doesn’t incorporate existing twts into jenny’s database. It’s best used starting from scratch. I’ve been testing it using a custom XDG_CACHE_HOME and XDG_CONFIG_HOME to avoid messing with my “real” jenny data.