Introduction A cloud SLA (cloud service-level agreement) is an agreement between a cloud service provider and a customer that ensures a minimum level of service is maintained. It guarantees levels of reliability, availability and responsiveness to systems and applications; specifies who governs when there is a service interruption; and describes penalties if service levels are…
Introduction A decorator in Python is a function that takes another function as its argument, and returns yet another function. Decorators can be extremely useful as they allow the extension of an existing function, without any modification to the original function source code. A decorator gives a function a new behavior without changing the function…
Introduction Docker is an open source software platform to create, deploy and manage virtualized application containers on a common operating system (OS), with an ecosystem of allied tools. How Docker works Docker packages, provisions and runs containers. Container technology is available through the operating system: A container packages the application service or function with all…
Secure copy What is SCP? Secure copy or SCP is used to transfer files from one system to another in a secure way. Steps to create .pem file Go to AWS – EC2 Dashboard From Left Navigation click on Key Pairs : This will land you on key pairs page Click on Create Key Pair (Blue Color…
Django comes with a built-in module i.e. BaseUserManager that can be used to generate a random password. Below is a sample implementation of that. from django.contrib.auth.base_user import BaseUserManager def random_password(size=12): return BaseUserManager().make_random_password(size) More extended information about the Django can be found here.
Currying is a technique in which a function accepts N parameters and turns it into a sequence of functions, each of them take 1 parameter. In mathematics and computer science, currying is the technique of translating the evaluation of a function that takes multiple arguments into evaluating a sequence of functions, each with a single argument. For example, a function that takes two arguments, one from X and one…
Both tools are great for building web applications, however, there are use cases where each stands out. Django, for example, is a great choice when you are considering using a relational database, a lot of external libraries, have security as a top priority on your list and need to build the application quickly. Use Node JS when you have an asynchronous stack…
