Ansible is a popular configuration management and IT automation tool, it’s created by Michael DeHaan in 2012, unlike most of the configuration management tools Ansible doesn’t require agent at client server, it is an agentless tool that just requires only ssh access to the remote...
In the previous post, we talked about service discovery and how it become an important component of modern environments, and we tried to set up a Consul cluster and to register/deregister a python application with Consul and saw how to use Consul-template to update the...
Service Discovery became an important component to most environments who can’t be satisfied with static and manual configuration of components. Modern service discovery tools can provide a way for components in production environments to find and communicate with each other, so that it allows the service...
Gunicorn is a simple yet powerful python WSGI HTTP server, it supports some python frameworks natively. It has many features like server hooks, SSL support, multiple worker types, and integeration with Django and Paster. Gunicorn is a pre-fork model server, which means that a master process...
Passenger is one of the most popular application servers. It is not just limited to Ruby applications, but it also supports Python WSGI so it can run for example Flask and Bottle applications. Passenger I/O Model Passenger 4 uses the evented I/O model, just like Nginx. While...
Database Backups can take several formats. Backup size, backup time, and restore time will vary for each of these formats. In this post, we will use a 13 GB database with a total of 66 million rows to compare and evaluate the backup and restore time...
CloudFront is a CDN (Content Delivery Network) Service offered by Amazon Web Services. CloudFront distribute web content (html, css, images, php, etc.) over more than 52 edge locations around the world to deliver the content more quickly. CloudFront serve the original content from the origin servers;...
When it comes to web server applications, there are two particular names that rise strongly; Apache and Nginx. So, what are the differences between these well-known web servers? and which one to pick? Introducing Apache The Apache HTTP Server is the most popular Linux-based web server. It was first...
Before Mysql 5.6 indexes had some limitations like the range comparisons, if the part of the index used in a range comparison the part of the index after the range scans cannot be used by where conditions so mysql retrieves all rows which met only...
One of the main methods of optimization is web caching, which is simply a method to store a copy of the web content to accelerate the serving it to the client. The most famous caching method is setting up a reverse proxy in-front of the web server...
