FIREWALL SECURITY: Deploying firewall at network boundary is like aggregating the security at a single point. All data packets entering or leaving the internal network pass through the firewall, which examines each packet and blocks those that do not Read more…
The Domain Name System (DNS) is a distributed directory that resolves human-readable hostnames into machine-readable IP addresses like 100.16.85.103. DNS is also a directory of crucial information about domain names, such as email servers (MX records) and sending verification (DKIM, SPF, DMARC), TXT record verification of domain ownership, and Read more…
Introduction The Apache HTTP server is the most widely-used web server in the world. It provides many powerful features including dynamically loadable modules, robust media support, and extensive integration with other popular software. In this guide, we’ll discuss how to Read more…
Environmental Variables Symbolic Name for a set of memory to assign and access the values. It will help to influence the behaviour of an application on the system. To secure our application from the crash we have to give a Read more…
These below are the available scopes where you can evaluate your code: 1. Instance Scope : (instance_eval, instance_exec) 2. Class Scope / Module Scope: (class_eval, class_exec, module_eval, module_exec) Scopes in simple term is the area of visibility and accessibility. Out Read more…
Rails 5.2 is released with RC1 Status which is considerably stable. To install rails 5.2 you will have to do gem install rails — prerelease. Rails 5.2 is the major update in rails before the release of Rails 6. In this 5.2 release, Read more…
RVM(Ruby Version Manager) is a command-line tool which allows you to easily install, manage, and work with multiple ruby environments from interpreters to sets of gems To install RVM As a first step install mpapis public key used to verify Read more…
What is it? How does it work? Ruby code blocks are definitely one of the coolest features of Ruby. Blocks are just chunk of code. In other programming languages, they may refer to it as closures. Blocks Ruby blocks Read more…
Introduction If you start the Node.js binary without any arguments, you will see the REPL command prompt, the > character and from this prompt ( interactive shell ) you can execute raw JavaScript code you wish. Those who are familiar with browser-side Read more…
Event Emitter in Node.js Stability: 2 – Stable Much of the Node.js core API is built around an idiomatic asynchronous event-driven architecture in which certain kinds of objects (called “emitters”) emit named events that cause Function objects (“listeners”) to be called. For instance: Read more…