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AI, ML & Data Engineering

Approximate Queries on WSO2 Stream Processor: Use of Approximation Algorithms in an Applied Setting

In this article, we describe an example real world application of API monitoring which benefits from using approximate stream processing. We developed the application on top of WSO2 Stream Processor as Siddhi extension. Siddhi is the complex event processing library which acts as the event processing engine of WSO2 Stream Processor.

Chamod Samarajeewa Miyuru Dayarathna
on Dec 15, 2017
DevOps

Uwe Friedrichsen on Functional Service Design and Observability

At the microXchg 2017 conference, Uwe Friedrichsen discussed the core concepts of “Resilient Functional Service Design” and how to create observable systems. Friedrichsen believes that microservice developers must: learn about fault tolerant design patterns and caching; understand Domain-Driven Design (DDD) and modularity; and aim to design for replaceability of components rather than reuse.

Daniel Bryant
on Nov 27, 2017
Development

An "Integration-First" Approach to Building a Commerce Platform for Payment Terminals

In this article Praveen Alavilli describes how they designed a payment terminal system for interoperability and extensibility, allowing developers to build new shopping experiences.

Praveen Alavilli
on Nov 13, 2017
Architecture & Design

Perspective on Architectural Fitness of Microservices

In this article we peel the onion of potential architectural fitness of microservices in the context of Master Data Management, and the challenges a microservices-based architecture may face when solving problem domains that require compute-intensive tasks, such as the calculation of expected losses on a portfolio of unsecured consumer credit.

Philippe Assouline
on Aug 21, 2017
Architecture & Design

Building a Blockchain PoC in Ten Minutes Using Hyperledger Composer

This article examines what businesses look for when considering blockchain’s role in their organization and how the Linux Foundation's Hyperledger Composer can help application developers easily create compelling blockchain solutions for the enterprise.

Matt Lucas
on Jun 27, 2017
Architecture & Design

Know the Flow! Microservices and Event Choreographies

This article explores ways to implement services which are long running and stretch across the boundary of individual microservices using event based architectures.

Bernd Ruecker Martin Schimak
on Jun 23, 2017
Development

Always Be Publishing: Continuous Integration & Collaboration in Code Repositories for REST API Docs

API documentation is an often overlooked part of making any API a success. This article explores how to make the documentation part of a continuous integration pipeline keeping it closer to the code itself.

Anne Gentle
on Apr 25, 2017
Culture & Methods

The Misaligned Middle and Getting off the Hamster Wheel Using Kanban

At the Agile 2016 conference, Dominica DeGrandis and Julia Wester of Leankit gave talks on helping middle managers adapt to change and how Kanban can be used to identify problems in workflows, which people need to address.

Shane Hastie
on Jan 31, 2017
Development

An Open API Initiative Update

The Open API Initiative group is evolving what has become the de-facto standard API Description Format to produce a consistent and compatible format for describing APIs, allowing interoperation between tooling, systems, and runtime environments. Tony Tam, creator of the popular Swagger Specification is providing an update on the group activity.

Deepak Nadig
on Sep 30, 2016
Architecture & Design

Two Mistakes You Need to Avoid When Integrating Services

With SOA, businesses moved from monolithic applications to heterogeneous designs by decomposing functionality into services. However, architects must be careful when integrating services. Often enterprises assume adopting patterns like ESB can help. Unfortunately, there are hidden challenges with these patterns. The danger is they go unnoticed during development but surface when a system is live.

Pamod Sylvester
on Sep 07, 2016
Java

Using Templates to Transform Web Service Results into Markup

The HTTP-RPC open-source Java framework returns results in JSON by default, but can use the CTemplate system to respond with custom markup. In this article, Greg Brown shows how simple annotations can be used to automatically respond to a web service in any markup (HTML, XML, CSV, etc.).

Greg Brown
on Aug 31, 2016
.NET

Creating RESTful Services with T4 Based on Model and Interfaces

When generating RESTful services with WebAPI, a lot of boilerplate code has to be implemented. Amel Musić demonstrates how T4 and EnvDTE can be used to create a flexible code generator that dramatically reduces the amount of time and effort this takes.

Amel Musić
on Aug 19, 2016