Autor: admin

Origem: RS-485 – Wikipedia

Many have wondered, and some have even claimed to know, which data-organization style provides the best performance in a data warehouse. The two schools of thought are, roughly:Denormalize the data into one-big-table (OBT) so that the warehouse never has to do any joins on-the-flyMaintain a star schema that can take advantage of sort keys on the dimension tables

Origem: Star Schema vs. OBT for Data Warehouse Performance | Blog | Fivetran

?Kepler.gl is a data-agnostic, high-performance web-based application for visual exploration of large-scale geolocation data sets. Built on top of Mapbox GL and deck.gl, kepler.gl can render millions of points representing thousands of trips and perform spatial aggregations on the fly.Kepler.gl is also a React component that uses Redux to manage its state and data flow. It can be embedded into other React-Redux applications and is highly customizable. For information on how to embed kepler.gl in your app take a look at this step-by-step tutorial on vis.academy.

Origem: Welcome – kepler.gl

Como um acidente que deixou 33 mineiros soterrados cativou por dois meses espectadores do mundo todo

Origem: Mineiros do Chile: a incrível e dramática saga acompanhada pelo mundo ao vivo na TV – BBC News Brasil

Product Discovery is a broad topic related to customer, user, market and product research. It’s about understanding market, customer and…

Origem: Addressing The Challenges of Product Discovery | by Saeed Khan | The Startup | Medium

“There are only two hard things in Computer Science: cache invalidation and naming things.” — Phil Karlton Introduction In today’s tech organisations, you find 2 … Read more5 Engineering Manager Archetypes

Origem: 5 Engineering Manager Archetypes

Com o constante crescimento da Hash, tornou-se necessário o desenvolvimento de novas ferramentas para facilitar as integrações entre…

Origem: Usando Protobuf para criar APIs com múltiplos protocolos (gRPC + REST) | by Hash Tech Team | Hash Tech | Mar, 2021 | Medium

In the Roll The Bones Tourbook, Neil Peart explained the line, “We will pay the price, but we will not count the cost”:”A line from John Barth’s The Tidewater Tales (he said I could use it) which echoed around inside me for a long time after I read that book. To me, it just means go for it. There are no failures of talent, only failures of character. I think that’s often true too. Sure there a lot of talented people who don’t achieve artistic or worldly success, but I think there’s usually a reason – a failure inside them. The important thing is: if you fail once, or if your luck is bad this time, the dream is still there. A dream is only over if you give it up – or if it comes true. That is called irony. We have to remember the oracle’s words, from Nike, the Greek goddess of victory and lumpy athletic shoes: Just do it. No excuses.” >>

 

Origem: Bravado by Rush – Songfacts

(nvram set ssh_en=1;nvram commit)
http://192.168.31.1/cgi-bin/luci/;stok=1c249158807034e4341dfdc1ad7b365d/api/misystem/set_config_iotdev?bssid=Xiaomi&user_id=longdike&ssid=-h%3Bnvram%20set%20ssh%5Fen%3D1%3B%20nvram%20commit%3B

(sed -i ‘s/channel=.*/channel=”debug”/g’ /etc/init.d/dropbear)
http://192.168.31.1/cgi-bin/luci/;stok=1c249158807034e4341dfdc1ad7b365d/api/misystem/set_config_iotdev?bssid=Xiaomi&user_id=longdike&ssid=-h%3Bsed%20-i%20’s/channel=.*/channel=%5C%22debug%5C%22/g’%20/etc/init.d/dropbear%3B

(/etc/init.d/dropbear start)
http://192.168.31.1/cgi-bin/luci/;stok=1c249158807034e4341dfdc1ad7b365d/api/misystem/set_config_iotdev?bssid=Xiaomi&user_id=longdike&ssid=-h%3B/etc/init.d/dropbear%20start%3B

http://192.168.31.1/cgi-bin/luci/;stok=1c249158807034e4341dfdc1ad7b365d/api/misystem/set_config_iotdev?bssid=gallifrey&user_id=doctor&ssid=-h%0Aecho%20-e%20%27%5Cn%27%20%7C%20passwd%20root%0A

 

No note subir o http server para baixar as imagens para o roteador

sudo python -m SimpleHTTPServer

ssh root@192.168.31.1

cd /tmp

wget http://192.168.31.128:8000/openwrt-ramips-mt7621-xiaomi_redmi-router-ac2100-squashfs-kernel1.bin

wget http://192.168.31.128:8000/openwrt-ramips-mt7621-xiaomi_redmi-router-ac2100-squashfs-rootfs0.bin

mtd write openwrt-ramips-mt7621-xiaomi_redmi-router-ac2100-squashfs-rootfs0.bin rootfs0

mtd write openwrt-ramips-mt7621-xiaomi_redmi-router-ac2100-squashfs-kernel1.bin kernel1

 

nvram set uart_en=1

nvram set bootdelay=5

nvram set flag_try_sys1_failed=1

nvram commit

reboot

pelo cabo ethernet

ssh root@192.168.1.1

opkg update

opkg install luci

Origem: Monitoring OpenWrt with collectd, InfluxDB and Grafana | Just another Linux geek

You and your team will eventually end up in a situation with long running pressure – either an unexpected incident, project risk being more damaging than expected or something else. How to lead your team through that time?

Source: Tips on managing team with long running pressure or incident | Engineering Manager

Ability to take ownership is critical for your career and is a major step between junior and senior role. See how to look for high-impact ownership for engineers.

Source: Ownership explained for Engineers and Managers | Engineering Manager

The Pygmalion effect, or Rosenthal effect, is what psychologists consider a form of ‘self-fulfilling prophecy’. It is a theory showing that people will often end up behaving in the way that others had expected them to when the subject has been repeatedly exposed those the others expectations about them. This effect can have both positive and negative outcomes. This is an introduction to the seminal study by Robert Rosenthal that shows this phenomenon.”CIROF”1. ‘Climate’ factor2. ‘Input’ factor3. ‘Response Opportunity’4. ‘Feedback’

The ChecklistFor an average incident, there are quite a few steps to managing an incident and much of it is typically handled on an ad-hoc basis by a human. Let’s enumerate them:Declare an Incident — There are many different entry points to a potential incident: automated alerts, an internal notification, or an external notification.Determine Incident Commander — Determining the sole individual responsible for driving a particular incident to resolution based on the incident source, type, and priority.Create Communication Channels — Communication during incidents is key. Establishing dedicated and standardized channels for communication prevents the creation of communication silos.Create Incident Document — The central document responsible for containing up-to-date incident information, including a description of the incident, links to resources, rough notes from in-person meetings, open questions, action items, and timeline information.Engage Individual Resources — An incident commander will not be able to resolve an incident by themselves, they must identify and engage additional resources within the organization to help them.Orient Individual Resources — Engaging additional resources is not enough, the Incident Commander needs to orient these resources to the situation at hand.Notify Key Stakeholders — For any given incident, key stakeholders not directly involved in resolving the incident need to be made aware of the incident.Drive Incident to Resolution — The actual resolution of the incident, creating tasks, asking questions, and tracking answers. Making note of key learnings to be addressed after resolution.Perform Post Incident Review (PIR) — Review how the incident process was performed, tracking actions to be performed after the incident, and driving learning through structuring informal knowledge.

Source: Introducing Dispatch – Netflix TechBlog

https://www.youtube.com/watch?v=54XLXg4fYsc

This interactive charts the new confirmed cases of COVID-19 in the past week vs. the total confirmed cases to date. When plotted in this way, exponential growth is represented as a straight line that slopes upwards. Notice that almost all countries follow a very similar path of exponential growth. We’re all in this together.

Source: Covid Trends

Implement end-user authentication and authorization using Istio and Auth0

Source: Back to Microservices with Istio (Part 2) — Authentication & Authorization

Reduce all the boilerplate code with Istio and get your services back to being micro!

Source: Back to Microservices with Istio (Part 1) – Google Cloud Platform – Community – Medium

Pact is a tool for automating contract tests for HTTP and message based applications. Contract tests assert that inter-application messages conform to a shared understanding that is documented in a contract. Without contract testing, the only way to ensure that applications will work correctly together is by using expensive and brittle integration tests.

Source: Introduction – Pact

In the Roll The Bones Tourbook, Neil Peart explained the line, “We will pay the price, but we will not count the cost”:”A line from John Barth’s The Tidewater Tales (he said I could use it) which echoed around inside me for a long time after I read that book. To me, it just means go for it. There are no failures of talent, only failures of character. I think that’s often true too. Sure there a lot of talented people who don’t achieve artistic or worldly success, but I think there’s usually a reason – a failure inside them. The important thing is: if you fail once, or if your luck is bad this time, the dream is still there. A dream is only over if you give it up – or if it comes true. That is called irony. We have to remember the oracle’s words, from Nike, the Greek goddess of victory and lumpy athletic shoes: Just do it. No excuses.”

Source: Bravado by Rush – Songfacts

In simple words. With real-world examples. Yes, again

Source: Machine Learning for Everyone :: In simple words. With real-world examples. Yes, again :: vas3k’s blog

Source: Google – Site Reliability Engineering

Machine Learning, Deep Learning
Aprendizado de Máquina em Português

Aprendizado Supervisionado:
http://stanford.io/2NE5dKH

Aprendizado Não Supervisionado:
http://stanford.io/2pPiA10

Aprendizado Profundo:
http://stanford.io/2ISaqh8

Dicas e truques de aprendizado de máquina:
http://stanford.io/2pR669f

Shirly Ronen-Harel Coaching and consulting with Agile / Lean / DevOps methods. Providing Agile and DevOps solutions using methods like Scrum, Kanban, Agile Testing, Agile product, DevOps , agile project management and such. I am also author of ‘The coaching Booster Book , and the ‘Agile Kids’ books and currently writing my new book.Part of elevating organization productivity and results I am engaged in Optimization of working processes , team resources allocation, and providing insights for fast moving suitable organization production line structure. My experience with agile assimilation is with large companies, as well as small companies and startups.

Source: Shirly Ronen-Harel | Roojoom

In this project you’ll learn how to turn a Raspberry Pi Zero board into a keyboard or HID. Then, you’ll write a Python script to make your Pi act as a keyboard.

Source: Turn Raspberry Pi Zero in USB Keyboard | Random Nerd Tutorials

(Download the cards & instructions as PDF or PPTX) (Translations of this article: Chinese, French) What is a squad health check model? A lot of companies experiment with ways of measuring and visualizing how their teams are doing. They’re usually called “maturity models”, and involve some sort of progression through different levels. The intent of these…

Source: Squad Health Check model – visualizing what to improve | Labs

Source: Google Cloud Platform Blog: SRE vs. DevOps: competing standards or close friends?

https://www.youtube.com/watch?v=tj2KpN5AXGo

https://www.youtube.com/watch?v=H4DlHBSNJL4

https://www.youtube.com/watch?v=OHWK0Wn0Ebs

https://www.youtube.com/watch?v=8YWjSQHfV5U

Source: Calçado’s Microservices Prerequisites

If you are looking for RGB LED strips, you will probably come across the WS2812 or the WS2801. These two LED strips are very different, but both can be controlled with the Raspberry Pi. After using the latter in a previous tutorial and using it in our Ambilight, this tutorial is about using the Raspberry […]

Source: Connect and Control WS2812 RGB LED Strips via Raspberry Pi

An easy tutorial on how to control a RGB or a WS2812 (Neopixel) LED-Strip with a Raspberry Pi. Available in English and German (Deutsch).

Source: Tutorial: How to control a LED-Strip with a Raspberry Pi | EN+DE

 

The pigpio library

pigpio is a library for the Raspberry which allows control of the General Purpose Input Outputs (GPIO).  pigpio works on all versions of the Pi.

http://abyz.me.uk/rpi/pigpio/