compumike

14 ms·

91.
by compumike 3y ago
Is there any proposed solution (other than just using unencrypted HTTP) that would make it so TLS is no longer the most brittle component of the web? The constant churn of protocol deprecations, certificate expirations, rotations, etc. is l
92.
by compumike 3y ago
> On the other hand, the HTTP status code does matter (sometimes a lot) to programs that hit the URL, including status monitoring programs; these will probably consider their checks to fail if the web server returns a 404 and succeed if
93.
by compumike 3y ago
Pretty interesting! It makes me wonder, would anyone want a hosted version that runs checks against your production API endpoints / websites periodically? We have these basic capabilities (for example, assert headers, status code) as p
94.
by compumike 3y ago
> I'm running more complicated stacks to capture massive amounts of data in order to use it less and less. > […] > My experience is companies do not anticipate that the cost of monitoring an application can easily exceed the c
95.
by compumike 3y ago
Sure :) Though a lot of practical thermal-related causes of electronics failure seem to operate on timescales of years to decades, like electromigration https://en.m.wikipedia.org/wiki/Electromigration or even just coo
96.
by compumike 3y ago
The second law of thermodynamics guarantees that there will always / eventually be downtime… and that’s okay. Design for downtime. Shameless self-plug for https://heiioncall.com/ for free website / HTTP endpoint m
97.
by compumike 3y ago
> My trust and assumptions with real time status pages changed completely. FYI this is why we show real-time status on https://heiioncall.com/status including the time of the last inbound check-in or last HTTP probe.
98.
by compumike 3y ago
Total Real Returns Chart for NVDA: https://totalrealreturns.com/s/NVDA (with dividends reinvested and inflation adjusted). It's been a bumpy ride since 1999! Trendline is quite positive but you'd have to have
99.
by compumike 3y ago
Ruby on Rails for us at https://heiioncall.com/ iOS and Android apps are Flutter, but most of the heavy lifting is still done by the Rails backend.
100.
by compumike 3y ago
At the cheap / DIY end, you might be surprised just how effective a metal toolbox is, with the paint filed off the seams around the lid, and some aluminum foil to help make connections / cover the gaps to the lid etc. We had this
101.
by compumike 3y ago
Crystal 1.8.2 https://crystal-lang.org/ : n = ARGV.first.to_i32 finished = Channel(Nil).new n.times do spawn do sleep(10.seconds) finished.send(nil) end end n.times { finishe
102.
by compumike 3y ago
Lots of sites especially have broken www -> root domain redirects, and http -> https redirects. Often these redirects aren’t covered by your CI tests either. The article is good for one-off debugging (curl is my personal favorite). Fo
103.
by compumike 3y ago
"Ultimate Electronics" author here -- waking up and seeing this on HN this morning! Reading the comments here, it seems like the summary of feedback is simply "please write more sections". It's true that I haven&#x2
104.
by compumike 3y ago
This is a nice feature at the minute-resolution level. I think something at the second-resolution level would be helpful too. For example, I have a cronjob on my Raspberry Pi at home that runs every minute and does a simple check-in with He
105.
by compumike 3y ago
For me, the pitch is performance: Crystal would be several times faster, while using a tiny fraction as much RAM. In my use case for https://heiioncall.com/ I ported a part of our system from Ruby to Crystal and we're
106.
by compumike 3y ago
We've been happily using Crystal in production at Heii On-Call (free website / cron job monitoring, free critical alerting to iOS/Android apps, on-call scheduling) [1] specifically for higher-throughput components of the over
107.
by compumike 3y ago
> I'm in my mid thirties and asked my pharmacist about it, I can get the shot but my insurance says I'm to old so I have to pay out of pocket for it. Are you sure? Also a mid-30s male and my PPO insurance covered it fully last
108.
by compumike 3y ago
Just a reminder that glibc / pthread has a known futex-related threading bug in the wild that has been open for three years: https://sourceware.org/bugzilla/show_bug.cgi?id=25847 It was discussed here two years ag
109.
by compumike 3y ago
Wow, “physically flooded with water somehow” and “load balancers” config propagation issue are so drastically different! Good reminder that downtime happens for many wild reasons, and you may want to take 30 seconds and set up a free websi
110.
by compumike 3y ago
Shhh… that’s our secret business model! Infinite revenue per user :P
111.
by compumike 3y ago
Anyone who has done real engineering would realize that this problem a consequence of a design flaw with PagerDuty (or other alternatives with a similar API, where alerting is only triggered directly by a webhook). If your design requires t
112.
by compumike 3y ago
Heii On-Call https://heiioncall.com/ has flat pricing regardless of team size. To be pedantic, it's free for individuals / teams-of-one, so I guess you could write: def price_per_month(team_size) if te
113.
by compumike 3y ago
Listened to this episode on a road trip yesterday and really enjoyed it. If you do a "part 2", I'm curious to hear more details about how they pulled off the growth of Reddit, broadening from an initial niche community into a
114.
by compumike 3y ago
What's the easiest/cheapest way to obtain a continuous glucose monitor for someone curious about how blood glucose level correlates with subjective well-being and diet/exercise behaviors, but without a medical need for it?
115.
by compumike 3y ago
You may also be interested in the book “High Speed Digital Design: A Handbook of Black Magic” which, despite “digital” in the title, is really about the analog details of getting signals cleanly from A to B. http://www.sigcon.com
116.
by compumike 3y ago
I do like how the author presents the case for how damaging false-positives can be in SRE monitoring. But, FYI, it can get worse if these monitors are hooked to self-actuating feedback loops! I recently wrote about a production incident on
117.
by compumike 3y ago
> Most of remotejobs.org is already hosted on a VPS and so in my case I'll move the web pieces there with a CDN like Cloudflare in front of it. You probably don’t even need a CDN at all.
118.
by compumike 4y ago
We're using Crystal for "premature optimization" for the parts of the system that need to scale, specifically: (1) the API server at https://api.heiioncall.com/ which gets hit frequently for check-ins, e.g. c
119.
by compumike 4y ago
Even as a much smaller team, building Heii On-Call [0] as a lightweight alerting/monitoring/on-call rotations SaaS based on Ruby on Rails has basically been a pleasure! And as the article highlights, perhaps the key reason for smo
120.
by compumike 4y ago
Author of the CircuitLab https://www.circuitlab.com/ (YC W13) mixed-mode (analog and digital) simulation engine here. The "core algorithm" is probably LU decomposition on a sparse matrix: https://ultima

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