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Higher-order functions II: Currying. We previously saw in part 5 how you can use function composition to arrange your code into sequences of steps representing the main ‘happy’ flow, while alternative ‘unhappy’ execution paths are encapsulated in a reusable structure known as a monad. Composing functions requires, perforce, functions that take exactly one argument. But you may have a function ...

In this post I am going to explain how to deploy and scale an Oracle Express database on a multi-node Kubernetes cluster. I am going to use this Docker container by Maxym Bylenko.  I am referring to the container for the Oracle XE 11g because of the following open issue with that for Oracle XE 12c at the time I did the process described ...

Curious about serverless/function-as-a-service/cloud functions technologies, but haven’t had a chance to dig in? Wondering what all the excitement is about? Serverless doesn’t mean no servers. It’s a new way to build modern applications. Watch this video to learn more about this new approach to building modern applications. The video covers: The current state of the serverless ecosystem & major players ...

The Internet of things is one of the fastest growing industries. Connected devices are around us: smart homes, cars, wearables and so on. Gartener predicts that 95% of the electronic products will include IoT features. When approaching to IoT projects there are several challenges we have to face. An IoT platform offers several services that simplify the project development and ...

Multi-cloud is defined as an approach that combines more than one cloud (public or private), from more than a single cloud vendor. However, this is not an aggregation of various services from different vendors, it requires a mandatory glue – cloud-agnostic approach with interoperability across all providers. Below we’ll cover what problems the right multi-cloud implementation can solve, what challenges can be ...

The press release “Oracle Code One Java Keynote Outlines the Future of Java” describes the Java Keynote at Oracle Code “highlight[ing] future projects” Project Valhalla, Project Panama, Project Amber, and Project Loom. This post provides brief summaries of each of these projects and some recent work associated with each of these projects for those who may not be familiar with ...

1. Introduction The previous parts of the tutorial were focused on more or less high-level topics regarding microservice architecture, like for example different frameworks, communication styles and interoperability in the polyglot world. Although it was quite useful, starting from this part we are slowly getting down to earth and direct our attention to the practical side of things, as developers ...

Telling the computer what to do is fun, but have you ever wondered how you can simply tell the computer one thing and it extends to another thing? I mean allowing the computer to make future executions without having to wait for exclusive commands from the programmer. Oh yeah, allowing the computer to indirectly make inference without waiting for input ...

In this example, we shall show you how to develop a simple Spring Boot Application with a Feign client for consuming a Weather REST service. Spring Boot is a Java-based framework, which simplifies the building of web and enterprise applications. Spring Boot has an embedded Tomcat, provides ‘starter’ dependencies and no requires the configuration of XMLs. Feign is a declarative ...