bahmanm, 7 months ago

Something that I’ll definitely keep an eye on. Thanks for sharing!

bahmanm, 7 months ago

RE Go: Others have already mentioned the right way, thought I’d personally prefer ~/opt/go over what was suggested.

---

RE Perl: To instruct Perl to install to another directory, for example to ~/opt/perl5, put the following lines somewhere in your bash init files.

<span style="color:#323232;">export PERL5LIB="$HOME/opt/perl5/lib/perl5${PERL5LIB:+:${PERL5LIB}}"
</span><span style="color:#323232;">export PERL_LOCAL_LIB_ROOT="$HOME/opt/perl5${PERL_LOCAL_LIB_ROOT:+:${PERL_LOCAL_LIB_ROOT}}"
</span><span style="color:#323232;">export PERL_MB_OPT="--install_base "$HOME/opt/perl5""
</span><span style="color:#323232;">export PERL_MM_OPT="INSTALL_BASE=$HOME/opt/perl5"
</span><span style="color:#323232;">export PATH="$HOME/opt/perl5/bin${PATH:+:${PATH}}"
</span>

Though you need to re-install the Perl packages you had previously installed.

bahmanm, 7 months ago

NB: I have never had the fortune to write Lisp in a professional setup.

For years, I used to use SBCL snippets for a whole set of automation tasks in my daily workflow, like updating git repos in batch, checking failing CI/CD pipelines per repo, organising my music collection, etc.

But gradually I switched to more specialised tools and, yes, Emacs Lisp to do what I needed to do. It just felt more ergonomic in my case.

The last time I seriously used SBCL was to solve some of Project Euler’s challenges back in 2018: github.com/bahmanm/euler-cl

Nowadays, I’ve got no non-elisp code left 🙂 🤷‍♂️

bahmanm, 7 months ago

First off, I was ready to close the tab at the slightest suggestion of using Velocity as a metric. That didn’t happen 🙂

---

I like the idea that metrics should be contained and sustainable. Though I don’t agree w/ the suggested metrics.

In general, it seems they are all designed around the process and not the product. In particular, there’s no mention of the “value unlocked” in each sprint: it’s an important one for an Agile team as it holds Product accountable to understanding of what is the $$$ value of the team’s effort.

The suggested set, to my mind, is formed around the idea of a feature factory line and its efficiency (assuming it is measurable.) It leaves out the “meaning” of what the team achieve w/ that efficiency.

My 2 cents.

---

Good read nonetheless 👍 Got me thinking about this intriguing topic after a few years.

bahmanm, 7 months ago

This is fantastic! 👏

I use Perl one-liners for record and text processing a lot and this will be definitely something I will keep coming back to - I’ve already learned a trick from “Context Matching” (9) 🙂

bahmanm, 7 months ago

Thanks for the link. Had no idea about that.

bahmanm, 7 months ago

beyond acceptable use

Since literally every aspect of lemmy-meter is configurable per instance, I’m not worried about that 😎 The admins can tell me what’s the frequency/number they’re comfortable w/ and I can reconfigure the solution.

You can hit the endpoint /api/v3/site for information about an instance including the admins list.

Exactly what I was looking for. Thanks very much 🙏

bahmanm, 7 months ago (edited 7 months ago)

sane defaults and a timeout period

I agree. This makes more sense.

Your name will be associated with abuse forevermore.

I was going to ignore your reply as a 🧌 given it’s an opt-in service for HTTP monitoring. But then you had a good point on the next line!

Let’s use such important labels where they actually make sense 🙂

bahmanm, 7 months ago

Agreed. It was a mix of too ambitious standards for up-to-date data and poor configuration on my side.

bahmanm, 7 months ago (edited 7 months ago)

Update 1

Thanks all for your feedback 🙏 I think everybody made a valid point that the OOTB configuration of 33 requests/min was quite useless and we can do better than that.

I reconfigured timeouts and probes and tuned it down to 4 HTTP GET requests/minute out of the box - see the configuration for details.

---

🌐 A pre-release version is available at lemmy-meter.info.

For the moment, it only probes the test instances

• enterprise.lemmy.ml
• ds9.lemmy.ml
• voyager.lemmy.ml

---

I’d very much appreciate your further thoughts and feedback.

bahmanm, 7 months ago

I’m not sure how this got cross-posted! I most certainly didn’t do it 🤷‍♂️

bahmanm, 7 months ago

Thanks for sharing your insights.

---

Thinking out loud here…

In my experience with traditional logging and distributed systems, timestamps and request IDs do store the information required to partially reconstruct a timeline:

• In the case of a linear (single branch) timeline you can always “query” by a request ID and order by the timestamps and that’s pretty much what tracing will do too.
• Things, however, get complicated when you’ve a timeline w/ multiple branches.
  For example, consider the following relatively simple diagram.
  Reconstructing the causality and join/fork relations between the executions nodes is almost impossible using traditional logs whereas a tracing solution will turn this into a nice visual w/ all the spans and sub-spans.

https://lemmy.ml/pictrs/image/9e00ce74-96e5-4961-8579-7a25f48f92ce.png

That said, logs do shine when things go wrong; when you start your investigation by using a stacktrace in the logs as a clue. That (stacktrace) is something that I’m not sure a tracing solution will be able to provide.

---

they should complement each other

Yes! You nailed it 💯

Logs are indispensable for troubleshooting (and potentially nothing else) while tracers are great for, well, tracing the data/request throughout the system and analyse the mutations.

bahmanm, 8 months ago

That was my case until I discovered that GNU tar has got a pretty decent online manual - it’s way better written than the manpage. I rarely forget the options nowadays even though I dont’ use tar that frequently.

bahmanm, 8 months ago

I cross-posted the same questions on Matrix and got the answer there.

---

The hook I’m using is invoked before the minor modes are setup - that’s why it’s being overridden. The suggestion was to have a hook function for each minor mode that I want to control. It’s not clean but gets the job done.

---

Here’s the working snippet:

<span style="font-style:italic;color:#969896;">;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
</span><span style="color:#323232;">
</span><span style="color:#323232;">(</span><span style="font-weight:bold;color:#a71d5d;">defun </span><span style="font-weight:bold;color:#795da3;">bahman</span><span style="font-weight:bold;color:#a71d5d;">/</span><span style="color:#323232;">helm</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">major</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode.hook ()
</span><span style="color:#323232;"> (display</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">line</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">numbers</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode </span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#0086b3;">1</span><span style="color:#323232;">)
</span><span style="color:#323232;"> (puni</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode </span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#0086b3;">1</span><span style="color:#323232;">))
</span><span style="color:#323232;">
</span><span style="color:#323232;">(add</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">hook 'helm</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">major</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">hook
</span><span style="color:#323232;">         </span><span style="color:#0086b3;">#'bahman/helm-major-mode.hook</span><span style="color:#323232;">)
</span><span style="color:#323232;">
</span><span style="font-style:italic;color:#969896;">;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
</span><span style="color:#323232;">
</span><span style="color:#323232;">(</span><span style="color:#62a35c;">defvar</span><span style="color:#323232;"> bahman</span><span style="font-weight:bold;color:#a71d5d;">/</span><span style="color:#323232;">display</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">line</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">numbers</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode.disabled</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">modes
</span><span style="color:#323232;"> '(vterm</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode erlang</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">shell</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode)
</span><span style="color:#323232;"> </span><span style="color:#183691;">"Disable `display-line-numbers' for the specified modes."</span><span style="color:#323232;">)
</span><span style="color:#323232;">
</span><span style="color:#323232;">(</span><span style="font-weight:bold;color:#a71d5d;">defun </span><span style="font-weight:bold;color:#795da3;">bahman</span><span style="font-weight:bold;color:#a71d5d;">/</span><span style="color:#323232;">display</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">line</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">numbers</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode.hook ()
</span><span style="color:#323232;"> (</span><span style="font-weight:bold;color:#a71d5d;">when </span><span style="color:#323232;">(seq</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">contains</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">p bahman</span><span style="font-weight:bold;color:#a71d5d;">/</span><span style="color:#323232;">display</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">line</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">numbers</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode.disabled</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">modes
</span><span style="color:#323232;">                       major</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode)
</span><span style="color:#323232;">     (display</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">line</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">numbers</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode </span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#0086b3;">1</span><span style="color:#323232;">)))
</span><span style="color:#323232;">
</span><span style="color:#323232;">(add</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">hook 'display</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">line</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">numbers</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">hook
</span><span style="color:#323232;">         </span><span style="color:#0086b3;">#'bahman/display-line-numbers-mode.hook</span><span style="color:#323232;">)
</span><span style="color:#323232;">
</span><span style="font-style:italic;color:#969896;">;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
</span><span style="color:#323232;">
</span><span style="color:#323232;">(</span><span style="color:#62a35c;">defvar</span><span style="color:#323232;"> bahman</span><span style="font-weight:bold;color:#a71d5d;">/</span><span style="color:#323232;">puni</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode.disabled</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">modes
</span><span style="color:#323232;"> '(vterm</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode)
</span><span style="color:#323232;"> </span><span style="color:#183691;">"Disable `puni-mode' for the specificied modes."</span><span style="color:#323232;">)
</span><span style="color:#323232;">
</span><span style="color:#323232;">(</span><span style="font-weight:bold;color:#a71d5d;">defun </span><span style="font-weight:bold;color:#795da3;">bahman</span><span style="font-weight:bold;color:#a71d5d;">/</span><span style="color:#323232;">puni</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode.hook ()
</span><span style="color:#323232;"> (</span><span style="font-weight:bold;color:#a71d5d;">when </span><span style="color:#323232;">(seq</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">contains</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">p bahman</span><span style="font-weight:bold;color:#a71d5d;">/</span><span style="color:#323232;">puni</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode.disabled</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">modes
</span><span style="color:#323232;">                       major</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode)
</span><span style="color:#323232;">   (puni</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode </span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#0086b3;">1</span><span style="color:#323232;">)))
</span><span style="color:#323232;">
</span><span style="color:#323232;">(add</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">hook 'puni</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">mode</span><span style="font-weight:bold;color:#a71d5d;">-</span><span style="color:#323232;">hook
</span><span style="color:#323232;">         </span><span style="color:#0086b3;">#'bahman/puni-mode.hook</span><span style="color:#323232;">)
</span>

bahmanm, 8 months ago

This is quite intriguing. But DHH has left so many details out (at least in that post) as pointed out by @breadsmasher - it makes it difficult to relate to.

On the other hand, like DHH said, one’s mileage may vary: it’s, in many ways, a case-by-case analysis that companies should do.

I know many businesses shrink the OPs team and hire less experienced OPs people to save $$$. But just to forward those saved $$$ to cloud providers. I can only assume DDH’s team is comprised of a bunch of experienced well-payed OPs people who can pull such feats off.

Nonetheless, looking forward to, hopefully, a follow up post that lays out some more details. Pray share if you come across it 🙏

bahmanm, 8 months ago

I think I understand where RMS was coming from RE “recursive variables”. As I wrote in my blog:

Recursive variables are quite powerful as they introduce a pinch of imperative programming into the otherwise totally declarative nature of a Makefile.

They extend the capabilities of Make quite substantially. But like any other powerful tool, one needs to use them sparsely and responsibly or end up w/ a complex and hard to debug Makefile.

In my experience, most of the times I can avoid using recursive variables and instead lay out the rules and prerequisites in a way that does the same. However, occasionally, I’d have to resort to them and I’m thankful that RMS didn’t win and they exist in GNU Make today 😅 IMO purist solutions have a tendency to turn out impractical.

bahmanm, 7 months ago

That sounds a great starting point!

🗣Thinking out loud here…

Say, if a crate implements the AutomatedContentFlagger interface it would show up on the admin page as an “Automated Filter” and the admin could dis/enable it on demand. That way we can have more filters than CSAM using the same interface.

bahmanm, 8 months ago

Thanks all for your feedback 🙏

I’m going to stick to “version 2” which, to my mind, reads more naturally. I’ll definitely consider the iterative suggestions for the sake of performance if I ever decide to submit a patch upstream. But for now, what I’ve got does the job for me dealing w/ sequences w/ less than 50 elements.