Blog Posts

All my blog posts and articles

Page 21 of 141 (2812 total posts)

March 2022

brandonhilkert/sucker_punch: Sucker Punch is a Ruby asynchronous processing library using concurrent-ruby, heavily influenced by Sidekiq and girl_friday.

38

brandonhilkert/sucker_punch: Sucker Punch is a Ruby asynchronous processing library using concurrent-ruby, heavily influenced by Sidekiq and girl_friday. Sucker Punch is a Ruby asynchronous processing library using concurrent-ruby, heavily influenced by Sidekiq and girl_friday. – brandonhilkert/sucker_punch: Sucker Punch is a Ruby asynchronous proce… March 28, 2022 at 08:14PM

The Basics of Database Sharding – Brent Ozar Unlimited®

17

The Basics of Database Sharding – Brent Ozar Unlimited® There are many ways to scale out your database; many of these techniques require advanced management and expensive add-ons or editions. Database sharding is a flexible way of scaling out a database. In this presentation, Jeremiah Peschka explains how to scale out using database sharding, covers basic techniques, and shares some of the pitfalls. This… March 24, 2022 at 03:03PM

Building Scalable Databases: Pros and Cons of Various Database Sharding Schemes – Dare Obasanjo

131

Building Scalable Databases: Pros and Cons of Various Database Sharding Schemes – Dare Obasanjo OpiniDatabase sharding is the process of splitting up a database across multiple machines to improve the scalability of an application. The justification for database sharding is that after a certain scale point it is cheaper and more feasible to scale a site horizontally by adding more machines than to grow it vertically by adding beefier servers. March 24, 2022 at 12:33AM

Sharding your database

131

Sharding your database I’m increasingly encountering users on Heroku that are encountering the need to shard their data. For most users this is something you delay as long as possible as you can generally go for sometime before you have to worry about it. Additionally scaling up your database is often a reasonable approach early on and something I encourage as a starting point as scaling up is easy to do with regards to databases. However, for the 1% of users that do need to shard when the time comes many are left wondering where to start, hence the following guide. March 24, 2022 at 12:34AM

The Ultimate Guide to Real-Time Lane Detection Using OpenCV – Automatic Addison

31

The Ultimate Guide to Real-Time Lane Detection Using OpenCV – Automatic Addison In this tutorial, we will go through the entire process, step by step, of how to detect lanes on a road in real time using the OpenCV computer vision library and Python. By the end of this tutorial, you will know how to build (from scratch) an application that can automatically detect lanes in a video stream from a front-facing camera mounted on a car. You’ll be able to generate this video below. March 22, 2022 at 03:46PM

Artvee

157

Artvee Browse and download high-resolution, public domain Paintings, Drawings, Illustrations and Posters. March 20, 2022 at 02:22PM

Fiducial-Based Localization

27

Fiducial-Based Localization Tutorials for MagniThis document discusses running our fiducial based navigation software on a Ubiquity Robotics robot base, using the supported Raspberry Pi camera. It also assumes that you have a workstation with ROS installed, which is connected to a network in common with the robot. You will need a printer, too. March 18, 2022 at 08:36PM

Calibrating a Monocular Camera with ROS – Robotics with ROS

63

Calibrating a Monocular Camera with ROS – Robotics with ROS ROS use OpenCV for camera calibration but the format that it stores the data is different than OpenCV. Also, you need to know where to place the camera calibration files so ROS can find it and publish it. 1.First, you need to install usb cam package from ROS and uvcdynctrl to disable autofocus: sudo apt-get install ros-kinetic-usb-cam uvcdynctrl 2.Open … Calibrating a Monocular Camera with ROS Read More » March 18, 2022 at 08:38PM