Up and running with Keras: Deep Learning Digit Classification using CNN

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Hibernate Acceleration With Snapshots

A Google search for "Hibernate" and "performance" will yield innumerable articles describing how to fix performance issues. This post is not yet another performance improver. Instead, we will demonstrate how to remove bottlenecks in your Hibernate project by using JPA support in Spring boot in tandem with in-JVM-memory snapshots which provide speedups of orders of magnitude. Let us use the Sakila sample database for the purpose of this post. The database contains, among other things, Films and Actors and relations between them.

A Straightforward Hibernate and Spring Application

A non-complicated way of interacting with a relational database is to use the Spring JPA plugin to allow Spring to handle dependency injection and setup of the project. This allows for a pure java implementation without any XML code to set up the ORM. For example, a properly annotated plain Film class is all that is needed to map the database table of films into the Java object domain.

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Improving Your Regression Testing Projects Through Automation

What Is Regression Testing?

Regression testing, also known as repeated testing, is the process of ensuring all the old functionalities still correctly work with new changes. In other words, regression testing tests an already tested application to find defects resulting from changes. This is a common step in any software development process and is done by testing specialists. Testers do regression testing by re-executing tests against a modified application to evaluate whether the revised code breaks anything which was working earlier. The only reason regression testing might not work is that changing or adding new code to a program can easily introduce errors into code that is not intended to be changed. Regression testing is required in the following scenarios:

• When the code is modified according to a change of the requirements
• When new functionality is added
• While fixing defects
• While fixing performance issues

Why Should Regression Testing Be Automated?

Let’s consider an example and how to perform regression testing in that situation. At the beginning of a project, assuming we have six developers and two testers, the Agile model is set up every two weeks for a sprint.

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Mule Kernel 4: Anypoint Studio

In the last article, I described my attempts with writing Mule apps in IntelliJ for Kernel edition. With no luck. Here, I will focus on writing a simple application in an environment that we should know pretty well...Anypoint Studio. After that, I will deploy this application on the Kernel application server to test how it works. If you are interested in basic information about Mule Kernel 4, look at this article where I have revealed some basic news.

Anypoint Studio

The newest version of Anypoint Studio can be downloaded from here. If you have already installed Studio, I encourage you to compare versions. It happens that slightly older versions like 7.2.2 won't get upgrades to version 7.3. It is good to check this, especially when rapid development of this IDE is made.

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A Data Science Journey

Often, organizations adopt tools and systems as per the emerging technology trends and their organic needs. This leads to a situation where a company’s technology landscape often resembles a forest of tools crowded in one place; however, each tool is different from the next.

Information created by these diverse tools is often known only to a small group of people within the company and remains isolated from such pools created by various other systems. These unconnected islands of information need to be brought together, synthesized to derive insights that would not have been realized with the silos of data.

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Open Source Software Is Under Attack; New Event-Stream Hack Is Latest Proof

Earlier this year, I detailed a new battlefront for open source software based on the fact that bad actors are increasingly polluting public wells like npm. which millions of thirsty developers drink from — to the tune of 6 billion downloads per week — and was recently compromised when a bad actor injected malicious code into the popular JavaScript component, event-stream.

In the Old Days, Hackers Waited to Attack

To give some additional context, five years ago, large and small enterprises alike witnessed the first prominent Apache Struts vulnerability. In this case, Apache responsibly and publicly disclosed the vulnerability at the same time they offered a new version to fix the vulnerability. Despite Apache doing their best to alert the public and prevent attacks from happening, many organizations were either not listening or did not act in a timely fashio, and, therefore, exploits in the wild were widespread. Simply stated, hackers profit handsomely when companies are asleep at the wheel and fail to react in a timely fashion to public vulnerability disclosures.

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What Are Microservices? And Why You'll Love Them

So, you have this awesome app. Everyone loves it. You know it, I know it. It's just the bee's knees. Awesome! But now, because you made the COOLEST thing ever, more people are using it. That increased traffic has stressed your servers, but more importantly it's stressing out the company because "We can't scale fast enough." What are you to do? Well I'd be a horrible "blogger" if I didn't at least try to help. So let's give this post the ol' college try.

Microservices, as the name suggests, are REEEEEALLY small services that make up a single application. Actually, the size (read number of lines of code) is a hard thing to pin down. Basically instead of building millions of lines of code (a monolithic app), you break out the app into logical sections that all perform a specific job. There is no set definition for what constitutes a microservice. It's more of a guideline, kinda like REST. Is your app doing all the things? Is your app only deployable as a single entity? Then you're probably looking at a monolithic app. Can you scale a single part of your app to meet current load? Are you able to redeploy just a small subset of your app when you have a new release? Then that's probably a microservice. Here's why you'll love them.....

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