[Video] Introduction to GraphQL

Keyhole Software Development Technology, Educational Event, Video Leave a Comment

This 33-minute video features Keyhole Principle Consultant Mat Warger at our internal employee lunch and learn in November 2020. He discusses GraphQL’s main features and how it’s beneficial for use in modern APIs.

GraphQL is a query language for APIs and a runtime for fulfilling those queries with your existing data. Basically, it provides a better way to think about your data!

Keyhole Fabric API Gateway Accepted Into Hyperledger Labs

Keyhole Software Blockchain, Company News, Hyperledger Leave a Comment

The Keyhole Labs team has announced that the Keyhole Fabric API Gateway has been accepted into Hyperledger Labs.

Hyperledger® Labs is a community-based innovation space gathering people who share a common interest in developing blockchain-related software. Entrance into Hyperledger Labs allows the Keyhole Fabric API Gateway to be further tested, innovated, and used by the wider Hyperledger community.

See the official announcement on the Keyhole Labs blog.

Go “On The Fly”

David Pitt Development Technology, Keyhole Creations, Programming, Tutorial Leave a Comment

People that know me, know that I love to fly fish and tie flies. I made up the saying “Time flies when you’re tying flies.” It is true, just like when you are trying to solve a programming problem, time flies.

Over the past few years, we at Keyhole have utilized Docker (with assorted technologies) and have gotten up to speed on the Hyperledger blockchain framework. Something that all of these technologies have in common is the Go language. Go is the language used to implement Docker, Hyperledger, OpenShift, and many other system-level applications.

Personally, I like to peek under the hood to better understand the tools I’m using. That led me to learning about the Go language. And in my opinion, the best way to learn a language is to build something.

So, I built an application for fly tying videos. There are numerous fly tying tutorials on YouTube, so I built an application that allows them to be organized into virtual fly boxes and types.

In this blog, I will introduce you to the Go language. We’ll go over some of the key language concepts by walking through how the https://flytyerworld.com server-side API is implemented using Go.

Integrating Azure Functions with Cosmos DB SQL API in .NET Core 2.2

Zach Gardner .NET Core, Azure, Development Technology, Tutorial Leave a Comment

I am working on a project that leverages both Azure Functions as well as Cosmos DB. In trying to get both of these components wired together, I found that there are very few examples that work with the most recent versions of these components. I also saw examples that could work at a small scale, but don’t show industry-standard best practices, and would lead to performance issues if deployed in an environment with any meaningful traffic.

To that end, I put together this blog post showing how to set up an Azure Functions project in .NET Core 2.2 to integrate with Cosmos DB’s SQL API using its native tooling.

Interactive REST API Documentation with Swagger UI

Bing Liu Development Technology, Microservices, Spring, Spring Boot 2 Comments

I am assisting a client that is migrating from a monolithic legacy application to a modern Microservice stack with Spring REST. We are helping to implement Swagger UI to provide both a front-end API UI, as well as to provide a level of documentation at the same time. This implementation has simultaneously met our project requirements, as well as garnering some positive feedback from our client!

Swagger UI is one of the most popular tools to visually render beautiful, interactive API documentation. In this blog, I’ll use a REST API application to demonstrate some usage of Swagger UI. The source project is available at https://github.com/bingliu2016/spring-boot-rest-swagger2.