PostgreSQL

How To Set Up a Two Node LEPP Stack on CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Two Node LEPP Stack on CentOS 7

This tutorial covers creating a simple web application on a two-tier CentOS 7 architecture using a “ground-up” approach. I.e. creating the a database tier first, then the web server. The site will be powered by an Nginx web server running PHP code that talks to a PostgreSQL database. We will call this configuration a LEPP (Linux, Nginx, PHP, PostgreSQL) stack.

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How To Use PostgreSQL with Your Ruby on Rails Application on CentOS 7 — step-by-step Linux tutorial on Progressive Robot

How To Use PostgreSQL with Your Ruby on Rails Application on CentOS 7

Ruby on Rails uses sqlite3 as its default database, which works great in many cases, but may not be sufficient for your application. If your application requires the scalability, centralization, and control (or any other feature) that a client/server SQL database, this tutorial will show you how to do just that, with PostgreSQL, on CentOS 7.

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Containerizing a Ruby on Rails Application for Development with Docker Compose — step-by-step Docker tutorial on Progressive Robot

Containerizing a Ruby on Rails Application for Development with Docker Compose

If you are actively developing an application, using Docker can simplify your workflow and the process of deploying your application to production. This tutorial will show you how to set up a development environment for a Ruby on Rails application using Docker. You will create multiple containers – for the application itself, the PostgreSQL database, Redis, and a Sidekiq service – with Docker Compose.

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How To Choose a Redundancy Plan To Ensure High Availability — step-by-step Databases tutorial on Progressive Robot

How To Choose a Redundancy Plan To Ensure High Availability

Redundancy is a way of reducing the impact of system failures by configuring multiple avenues to achieve the objective. If a disk, a computer, or an entire portion of the network becomes unavailable for some reason, various forms of redundancy can help mitigate the impact on your currently running systems. This will allow you to address the issue without experiencing downtime.

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