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10 tips for building “Purely” horizontal scalable Architectures

To scale horizontally (or scale out/in) means to add more nodes to (or remove nodes from) a system, such as adding a new node or a computer to a distributed software application.

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Getting started with Flutter

Flutter is an open source beta framework by Google for mobile UI to build high-quality native (super fast) interfaces for both iOS and Android. Dart is used as a programming language inside Flutter. A bit of caution needs to be exercised as it is still in Beta and we don’t know what can change later on given the history of Google.

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Notes: Read CSV with encoding ISO-8859–1 in Ruby

I was struggling to read a CSV file and load it in PostgreSQL using ruby.Simply, the following code block should work.

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Add Free Security Certificate (Https) for your Nginx applications on Ubuntu

In a typical HTTP connection, all the header and other sensitive information are transferred as a ‘plain text’ and that can be read by anyone. One simple example I could cite is an online fund transactions which uses sensitive information like credit card. Which you definitely do not want to do over a non-secure HTTP line.

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Elasticsearch: Scale Vertically up/down

One of the major advantages with Elasticsearch is, its out of the box support for scaling up or down - both horizontally and vertically. This is about Vertical scaling. As you should know already, Vertical scaling means you are not going to add more hardware, but just increase the computing power of the existing hardware, may it be CPU, RAM or Storage.

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Handling ever-loading pages via Selenium Webdriver

One of the features (or lack of) in Selenium webdriver is that the navigate method only returns when all the content in the page has completed loading. There are times where this could not be very useful. For example, everything that you expected in the page has already loaded, however there was this one Javascript which you do not need which takes at least 50 seconds to load.

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Notes: Exporting data through pgcli

We at Francium love to use lean database clients to connect to databases. We enjoy using pgcli. It is a python based, open source postgres client for those willing to use lean and simple but powerful tool.

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Object Pool Design Pattern - When and How to Use one?

Object Pooling is one of the widely used design patterns by software developers. One of the easiest examples I could cite is the Database Connection Pooling. I would like to quickly demonstrate a real use case where we made use of it. Object Pool Pattern is extremely useful when cost of object creation is very high.

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Serverless Architecture and Web Scraping: A Cost study

One of the most common things that is done these days is to collect information about anything and everything present in the public domain, kind of unstructured data and decipher/decode patterns to get some valuable information. There are many sources to get such information, but websites for this purpose are the most popular. One can write a simple scraper that could iteratively go through the pages within a predefined depth and get back all the content displayed which could then be used for doing various sort of analytics.

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7 Reasons for Why we ditched wordpress?

A website is a very crucial factor for any company and we recently went live with ours. It is like your public face or a house address. The Landing or Home page is equivalent to visiting your office and seeing how aesthetic the reception area is to give that first impression. It is super vital to keep it clean, informative, and to top it all to be extremely secure from the plethora of web attacks seen in the recent times.

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Installing Rmagick on OSX High Sierra

A quick note. When you face the following error while installing rmagick gem in high sierra

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Intro to Blockchain’s Lightning Network

We are already into third generation of cryptocurrencies that offers solutions to problems from previous generations that includes scalability, transaction cost and interoperability.

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