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Comparando json na linha de comando mg;nl: vamos usar o vimdiff e o jq para comparar arquivos json independente da formatação. Comparar arquivos json parecidos pode ser complicado. Muitas vezes os arquivos foram formatados com espaçamentos diferentes, ou a diferença não ocorre no mesmo nível hierarquico. Vamos criar um script simples pra comparar arquivos json diretamente pelo terminal, usando o programa jq e o vimdiff. Vamos ver também com..
Yes, it’s time to redo my blog again. This time I found an ultra light-weight blog theme. This page here is under 100KB! I wanted to make something that acts more like a homepage for my research, rather than a blog. I still have all my blog posts, but now the focus will be on a more professional presentation of my work. This theme is really what I’ve wanted all along: a home page with a max-width for the text, table of contents, and b..
Embedded devices continue to increase in popularity and one category, in particular, that has become en vogue as of late is the Internet of Things (IoT). The emergence of these next generation technologies has driven the home automation evolution from simple light bulbs to cloud-connected printers, smart refrigerators, etc. -Continue to read the article on SerHack.me
After I bought and reviewed the beautiful Grid iPhone 3G , the founder of Grid (with my surprise) contacted me to thank me for the honest review, and he also said that he wanted to gift me another product from Grid: the Grid A7 (APL5698) . And it has arrived! The Grid A7 is essentially the Apple A7 SoC of the iPhone 5S and iPad Mini 2, encapsulated in a very cool “frame”. Since the A7 was the SoC of the iPhone 5S this isn’t ..
After I bought and reviewed the beautiful Grid iPhone 3G , the founder of Grid (with my surprise) contacted me to thank me for the honest review, and he also said that he wanted to gift me another product from Grid: the Grid A7 (APL5698) . And it has arrived! The Grid A7 is essentially the Apple A7 SoC of the iPhone 5S and iPad Mini 2, encapsulated in a very cool “frame”. Since the A7 was the SoC of the iPhone 5S this isn’t ..
Yes, it’s time to redo my blog again. This time I found an ultra light-weight blog theme. This page here is under 100KB! I wanted to make something that acts more like a homepage for my research, rather than a blog. I still have all my blog posts, but now the focus will be on a more professional presentation of my work. This theme is really what I’ve wanted all along: a home page with a max-width for the text, table of contents, and b..
Multi-threading can offer substantial performance improvements for CPU-bound workflows by allowing arbitrary work to be performed in parallel. Although Node.js doesn’t offer real multi-threading, you can create something similar with the worker threads module. This article will explain what it does, and show how to use it in a few real-world applications.
SVCB DNS resource records (RRs) were introduced somewhat recently. They inform user-agents that a given resource exists at another endpoint, possibly with extra parameters. Functionality closely mirrors the Alt-Svc standard. A profile of SVCB exists in HTTPS RRs; Encrypted Client Hello and HTTP/3 are the main use-cases today. To give IPNS-accessible services familiar names, I think SVCB is a better long-term solution than DNSLink . A ..
Snyk is excited to announce a new, native integration with Atlassian Bitbucket Cloud. This new release improves Snyk’s functionality within Bitbucket Cloud, making installation faster, and easier to implement.
Reakcia EÚ na COVID-19: príprava na jeseň a zimu 2023 Dokument bol vypracovaný Európskou Komisiou a zverejnený  2. Septembra 2022, Pokiaľ ide o blokácie (lockdowns) a iné obmedzenia – ukazovatele pri ich rozhodovaní zahŕňajú údaje o závažných ochoreniach a obsadenosti nemocníc – nevzťahujú sa len ochorenie Covid-19, ale aj chrípku, čím sa tieto opatrenia môžu stať bežnými počas chrípkových […]
13 Months… … after filing the application to keep my German citizenship, I got an email today, letting me know that my application was accepted, and I was granted the permission to retain my German citizenship when applying for the US citizenship. Yes 🤘! Now, I need to make an appointment to pick up my certificate from the German Consulate in San Francisco. And then start the N-400 process to become a US Citizen.
Last Saturday I went on a motorcycle trip with my club . We had about forty motorcycles, many coming from afar—a tremendous turnout considering how advanced the season is. This event was particularly involving for me, as my local group was in charge of the organization. We were going to visit the Foreste Casentinesi National Park , which isn’t far from our hometown. We know those roads and their surroundings well; we call them home, yet....
In defense of QUIC - seirdy.one - 3 years ago - eng
I face lossy connections, and QUIC noticeably improves latency: connections establish in just one or zero round-trips and loss doesn’t cause as much re-transmission. Add forward error correction and QUIC makes lossy connections much less painful. This isn’t just for “adtech websites streaming video”: the biggest beneficiaries are networks like Matrix and XMPP. There are much bigger things to worry about regarding Google’s control of sta..
OpenSSL and QUIC - seirdy.one - 3 years ago - eng
A rough timeline of QUIC support in OpenSSL-like libraries: BoringSSL implements QUIC. Quiche, a QUIC library, requires BoringSSL. Nginx can be patched to use Quiche for HTTP/3. Nginx’s experimental QUIC branch (nginx-quic) is released. It requires BoringSSL. Some organizations (mostly Akamai) fork OpenSSL to implement the BoringSSL QUIC API, calling their fork QuicTLS. They plan to upstream changes. nginx-quic supports ..
Let $\mathbf{x} = \{ x_1, x_2, \ldots, x_n \}$ be a sample of size $n$. We assign non-negative weight coefficients $w_i$ with a positive sum for all sample elements: $$ \mathbf{w} = \{ w_1, w_2, \ldots, w_n \}, \quad w_i \geq 0, \quad \sum_{i=1}^{n} w_i > 0. $$ For simplification, we also consider normalized (standardized) weights $\overline{\mathbf{w}}$: $$ \overline{\mathbf{w}} = \{ \overline{w}_1, \overline{w}_2, \ldots, \overline{w}_n..
In an earlier blog post, we talked about how we changed the interview process during remote working as a way of improving our recruiting…
Let $\mathbf{x} = \{ x_1, x_2, \ldots, x_n \}$ be a sample of size $n$. We assign non-negative weight coefficients $w_i$ with a positive sum for all sample elements: $$ \mathbf{w} = \{ w_1, w_2, \ldots, w_n \}, \quad w_i \geq 0, \quad \sum_{i=1}^{n} w_i > 0. $$ For simplification, we also consider normalized (standardized) weights $\overline{\mathbf{w}}$: $$ \overline{\mathbf{w}} = \{ \overline{w}_1, \overline{w}_2, \ldots, \overline{w}_n..
An example of HPA that scales up and down depending on CPU and memory consumption. apiVersion: autoscaling/v2beta2 kind: HorizontalPodAutoscaler metadata: name: identity spec: scaleTargetRef: apiVersion: apps/v1 kind: Deployment name: deploymentname minReplicas: 2 maxReplicas: 10 behavior: scaleUp: stabilizationWindowSeconds: 300 policies: - type: Pods value: 1 periodSeconds: 300 scaleDown: stabilizationWindowSeconds: 300 policies: - type: ..
Today the market for architectural CAD (Computer Aided Design) software is mostly closed-source and has a monopolistic structure. A few big companies dominate the market. In this article I want to lay out a vision for an alternative future of an open source ecosystem.
By which I mean there are deeply problematic assumptions in the very notion of scaling: Scaling changes the rules, and scaling problems exist in both directions. If what you are doing effortlessly scales up, it almost always means it’s egregiously sub-optimal given your present needs. These assertions are all very abstract. I’ll illustrate with several examples, to try and build an intuition for scaling. You most likely already know what ..
In an earlier blog post, we talked about how we changed the interview process during remote working as a way of improving our recruiting…
Assumed Audience : Software Developers. Discuss on Hacker News , but please do not post this on lobste.rs . Epistemic Status : Confident in my opinions and extremely confident in my process. Introduction There are three things that caused me to write this post. I found this blog post . I just added three features to my bc. I’m about to write a post about professionalism in computing. And this post is the one thing those..
Assumed Audience : Software Developers. Discuss on Hacker News , but please do not post this on lobste.rs . Epistemic Status : Confident in my opinions and extremely confident in my process. Introduction There are three things that caused me to write this post. I found this blog post . I just added three features to my bc. I’m about to write a post about professionalism in computing. And this post is the one thing those..
Assumed Audience : Software Developers. Discuss on Hacker News , but please do not post this on lobste.rs . Epistemic Status : Confident in my opinions and extremely confident in my process. Introduction There are three things that caused me to write this post. I found this blog post . I just added three features to my bc. I’m about to write a post about professionalism in computing. And this post is the one thing those..
Assumed Audience : Software Developers. Discuss on Hacker News , but please do not post this on lobste.rs . Epistemic Status : Confident in my opinions and extremely confident in my process. Introduction There are three things that caused me to write this post. I found this blog post . I just added three features to my bc. I’m about to write a post about professionalism in computing. And this post is the one thing those..
Assumed Audience : Software Developers. Discuss on Hacker News , but please do not post this on lobste.rs . Epistemic Status : Confident in my opinions and extremely confident in my process. Introduction There are three things that caused me to write this post. I found this blog post . I just added three features to my bc. I’m about to write a post about professionalism in computing. And this post is the one thing those..
Assumed Audience : Software Developers. Discuss on Hacker News , but please do not post this on lobste.rs . Epistemic Status : Confident in my opinions and extremely confident in my process. Introduction There are three things that caused me to write this post. I found this blog post . I just added three features to my bc. I’m about to write a post about professionalism in computing. And this post is the one thing those..
Assumed Audience : Software Developers. Discuss on Hacker News , but please do not post this on lobste.rs . Epistemic Status : Confident in my opinions and extremely confident in my process. Introduction There are three things that caused me to write this post. I found this blog post . I just added three features to my bc. I’m about to write a post about professionalism in computing. And this post is the one thing those..
Assumed Audience : Software Developers. Discuss on Hacker News , but please do not post this on lobste.rs . Epistemic Status : Confident in my opinions and extremely confident in my process. Introduction There are three things that caused me to write this post. I found this blog post . I just added three features to my bc. I’m about to write a post about professionalism in computing. And this post is the one thing those..
The leaves - liza.io - 3 years ago - eng
It was 3am and I was awake, thinking about the pile of leaves in the backyard again. These leaves had been there for two weeks, in a wheelbarrow. There was no composting/recycling place for green waste within walking distance so we’d need to hire a rental car to drive them somewhere where you could drop them off. And during the day, we just never got to it.
~vern Onion DDoS - vern.cc - 3 years ago - eng
vern Onion DDoS ~vern team Mon, 24 Oct 2022 Hello ~vern members, We have recently been DDoSed over the Tor network, meaning our onion services were down for a short period of time. I first noticed strange behavior starting around 9:30 AM UTC, where ~vern onions would time out. I have seen this behavior before, in DuckDuckGoOnion. I didn’t know what it was, so I tried restarting the Tor service, which worked at first. Then it happe....
Avoid kexec if you don’t need it: it opens new vulnerabilities, and is better left disabled for most use-cases. Redundancy and failover should eliminate the need when hosting a typical service. Even without the risks, there are other reasons to reboot: updates to shared libraries, SELinux policies, and init systems often warrant one. One use-case that benefits from kexec is pubnix systems with many logged-in users. If you need to apply an..
The *scratch* buffer is the first thing I see when I launch an Emacs session. Coupled with persistent-scratch , it's served me well over the years. I gotta say though, my scratch buffer accumulates random bits and often becomes a little messy. It's not the most visually appealing landing buffer when launching Emacs. But who cares, I'm only a C-x b binding away from invoking ivy-switch-buffer to get me wherever I need to be. It's powered by....
MapTiler Desktop is now MapTiler Engine! Faster processing, optimized tiles, affordable pricing and many more improvements.
In this current recession, it's difficult to think about buying a new car. But what if we told you that by following a few simple steps, you could afford a brand new Honda by 2023?
RISC vs CISC Traditionally, most computing platforms were built with the burden of software in mind. To ensure that a software program could be written easily and with fewer instructions, additional circuitry was added to the central processing unit (CPU) to compensate. This was referred to as complex instruction set computing (CISC). CISC architecture is still common today thanks to the x86 architecture used by Intel and AMD CPUs in most ..
RISC vs CISC Traditionally, most computing platforms were built with the burden of software in mind. To ensure that a software program could be written easily and with fewer instructions, additional circuitry was added to the central processing unit (CPU) to compensate. This was referred to as complex instruction set computing (CISC). CISC architecture is still common today thanks to the x86 architecture used by Intel and AMD CPUs in most ..
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