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Working with DynamoDB

Recently, I worked on an IoT-based project where we had to store time-series data coming from multiple sensors and show real-time data to an enduser. Further, we needed to generate reports and analyze gathered information. To deal with the continuous data flowing from the sensors, we chose DynamoDB for storage. DynamoDB promises to handle large data with single-digit millisecond latency, ...

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Monitoring Your Asynchronous Python Web Applications Using Prometheus

In my last article, we saw how we can integrate the Prometheus monitoring system with synchronous Python applications. We focused on WSGI applications such as those written in Flask or Django and deployed using uwsgi or gunicorn. In this post, we will discuss integrating Prometheus with asynchronous web applications written using aiohttp, an HTTP client/server framework built upon asyncio. Software ...

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Python Tkinter Tutorial

Today we will be talking about one python library that is used for GUI programming which is Tkinter.                     Table Of Contents 1. What is Tkinter? 1.1. More about Tkinter 1.2. Installing Tkinter 2. Examples 2.1. Basic examples 2.2. Widget 2.3. Frame 2.4. Event handling 3. Summary 4. Homework 5. Download ...

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Building a Remote Caching System: The Sequel

Last fall, Docker made some big changes that required us to overhaul how our Codeship Pro image caching system worked. Our director of engineering, Laura Frank, published a blog post explaining everything back when we launched this new system. The gist of this was that Docker no longer allowed images pulled from a remote source to be used as a ...

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Docker Commands for Development to Deployment

The objective of this article to understand the end to end flow of container development to deployment in target environment and list down the docker commands needed for every action. 1 Introduction The overall process consists of  i) develop a container image with your code, dependent software and configurations, ii) run and test the container in development environment, iii) publish the container image ...

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Tutorial: Learn Twitter Bootstrap Quickly

The aim of this tutorial is to get you up and running with Twitter Bootstrap framework quickly. Twitter Bootstrap has soared in popularity over the years and continues to be the go-to resource for front-end development. Let us explore the most common and frequently used components, features and css classes of this framework to get you up to speed.   ...

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Advanced Enumeration with Ruby

Enumeration by definition is “the action of mentioning a number of things one by one.” In programming, instead of mentioning, we choose any action we may want to perform, whether it simply be printing out the item to a display or performing some sort of selection and/or transformation on the item. In programming, we can perform many ways to select ...

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Read Environment Variables in Appropriate PHP Type

You probably get your environment variables using built-in PHP functions such as getenv or $_ENV. But did you know that you can do it in an elegant way, getting an environment variable’s value in the proper PHP data type with a powerful library? If you’re curious, read on about how this energetic library can help you in your daily development ...

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Behavioural Driven Development using Python Behave

1. Introduction Behave is Behavioural Driven Development that uses Python as its back end language. Behave uses tests written in natural language format, backed up by python code. 2. Installation The installation of Behave can be done in two ways: You can install Behave using pip. All you have to do is just type in pip install behave. The other way ...

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