How to Create a Private Ethereum Blockchain from Ground-up?

Ethereum is a decentralized platform that runs smart contracts, applications that run exactly as programmed without possibility of downtime, censorship, fraud or third party interference. In this blog post I will take you through all the steps required in setting up a fully functioning private ethereum blockchain, inside your local network — which includes:

  • Setting up a private blockchain with ethereum using geth.
  • Setting up the MetaMask ethereum wallet to work with the private blockchain.
  • Transfer funds between multiple accounts.
  • Create, deploy and invoke a smart contract on the private blockchain using remix.
  • Setting up ethereum block explorer over the private blockchain.

https://medium.facilelogin.com/build-your-own-blockchain-b8eaeea2f891

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S3 Bucket Security: More Than ACLs and Policies

Many companies are suffering data breaches because attackers gain access to data in AWS S3 buckets. I don’t want to repeat all the news articles outlining all the S3 data breaches. A Google search will give many examples, and it seems like by the time I write this another one will be in the news. Instead, I’d like to jump to why these S3 bucket breaches are happening and how to securely store data in an S3 bucket.

https://www.secplicity.org/2017/10/13/s3-bucket-security-acls-policies/amp/

Everything You Wanted To Know About Blockchains but were too afraid to ask

Ah, blockchains.

Kind of a big deal. You’d have to be a total square not to have heard about them. Me? I’ve got eight.

Often over-complicated, over-mysticised, over-singularised (I don’t even know what the right word for it is, but people say The Blockchain a lot). What are they? Join me for a rough tour from the ground up and I’ll try to make sure you leave here knowing the answer to one question:

What are people talking about when they talk about blockchains?

There’s a lot to cover, so it’s actually going to come in two parts. This, the first, will look at the data structures known as blockchains and their properties, along with any other bits and pieces you need to make sense of them.

The second part will apply what you’ve learnt to the practical and widespread applications of blockchains to power distributed ledgers, cryptocurrencies such as Bitcoin and Litecoin and smart-contract based chains like Etherium.

https://unwttng.com/what-is-a-blockchain

A Visual Introduction to Machine Learning

In machine learning, computers apply statistical learning techniques to automatically identify patterns in data. These techniques can be used to make highly accurate predictions. Using a data set about homes, we will create a machine learning model to distinguish homes in New York from homes in San Francisco.

First, some intuition

Let’s say you had to determine whether a home is in San Francisco or in New York. In machine learning terms, categorizing data points is a classification task.Since San Francisco is relatively hilly, the elevation of a home may be a good way to distinguish the two cities. Based on the home-elevation data to the right, you could argue that a home above 240 ft should be classified as one in San Francisco.

Adding nuance

Adding another dimension allows for more nuance. For example, New York apartments can be extremely expensive per square foot. So visualizing elevation and price per square foot in a scatterplot helps us distinguish lower-elevation homes. The data suggests that, among homes at or below 240 ft, those that cost more than $1776 per square foot are in New York City. Dimensions in a data set are called features, predictors, or variables. 1

Drawing boundaries

You can visualize your elevation (>242 ft) and price per square foot (>$1776) observations as the boundaries of regions in your scatterplot. Homes plotted in the green and blue regions would be in San Francisco and New York, respectively.

Identifying boundaries in data using math is the essence of statistical learning. Of course, you’ll need additional information to distinguish homes with lower elevations and lower per-square-foot prices. The dataset we are using to create the model has 7 different dimensions. Creating a model is also known as training a model. On the right, we are visualizing the variables in a scatterplot matrix to show the relationships between each pair of dimensions.

There are clearly patterns in the data, but the boundaries for delineating them are not obvious.

And now, machine learning

Finding patterns in data is where machine learning comes in. Machine learning methods use statistical learning to identify boundaries. One example of a machine learning method is a decision tree. Decision trees look at one variable at a time and are a reasonably accessible (though rudimentary) machine learning method.

What you will find in the full article:

  • Finding better boundaries
  • Your first fork
  • Tradeoffs
  • The best split
  • Recursion
  • Growing a tree
  • Making predictions
  • Reality check

To check out all this information, and play with a few cool interactive visualizations, click here.

 

http://www.datasciencecentral.com/profiles/blogs/a-visual-introduction-to-machine-learning-1

Developer Experience Lessons Operating a Serverless-like Platform At Netflix

The Netflix API is based on a dynamic scripting platform that handles thousands of changes per day. This platform allows our client developers to create a customized API experience on over a thousand device types by executing server side adapter code in response to HTTP requests. Developers are only responsible for the adapter code they write; they do not have to worry about infrastructure concerns related to server management and operations. To these developers, the scripting platform in effect, provides an experience similar to that offered by serverless or FaaS platforms. It is important to note that the similarities are limited to the developer experience (DevEx); the runtime is a custom implementation that is not designed to support general purpose serverless use cases. A few years of developing and operating this platform for a diverse set of developers has yielded several DevEx learnings for us…

https://medium.com/netflix-techblog/developer-experience-lessons-operating-a-serverless-like-platform-at-netflix-a8bbd5b899a0

In Part 1 of this series, we outlined key learnings the Edge Developer Experience team gained from operating the API dynamic scripting platform which provides a serverless or FaaS like experience for client application developers. We addressed the concerns around getting code ready for production deployment. Here, we look at what it takes to deploy it safely and operate it on an ongoing basis…

https://medium.com/netflix-techblog/developer-experience-lessons-operating-a-serverless-like-platform-at-netflix-part-ii-63a376c28228

What Are We Doing With Google’s Flutter?

GeekyAnts has been working with React Native since its launch in 2015 and with many awesome apps to our credit, we are proud to say that we are one of the top React Native companies out there! 🎉 🎆

Over the years, we have noticed a few issues in React Native apps that make us want for “something more”.

Our search for this “something more” has led us to Google’s Flutter!

https://hackernoon.com/what-are-we-doing-with-googles-flutter-74ff29dd256a

Google Cloud vs AWS in 2017 (Comparing the Giants)

It’s no surprise that cloud computing has literally taken the world by storm. For most businesses and enterprises, gone are the days of struggling with complicated on-premise server rooms and complicated networking. Over the past decade, cloud computing has become more cost-efficient, secure, and reliable. The major providers in the industry are now investing heavily in their hardware, software, and global networking infrastructure to obtain more market share, which has resulted in unparalleled performance. Healthy competition is always a win for consumers and partners as this drives costs down and requires them to constantly innovate to stay ahead.

Typically when we think of cloud computing providers we are referring to the three giants in the industry: Azure, Google Cloud, and AWS. Today we’re going to compare just two of them, Google Cloud vs AWS. We exclusively utilize Google Cloud Platform here at Kinsta, but we’ll try to keep this article as unbiased as possible and explain everything in layman’s terms. There are definitely some advantages and disadvantages to both providers.  Trust us, we’ve had our own share of challenges! No matter which provider you choose, you’ll always encounter issues at some point along the way.

https://kinsta.com/blog/google-cloud-vs-aws/?utm_campaign=blog&utm_medium=social&utm_source=facebook&utm_content=google-cloud-vs-aws