A Keyhole Case Study In general terms, a blockchain is an immutable transaction ledger in a distributed network of participating peers. Its data includes a string of transaction records secured with cryptography. Benefits of blockchain can include decentralization, immutability, provenance, and finality. While Bitcoin and Ethereum cryptocurrencies brought blockchain to the forefront of technology headlines, the technology underneath has true …
Keyhole Software Releases React Guitar Tuner Application
Keyhole Software is proud to announce the release of the Keyhole Guitar Tuner application. This open source application provides audio for tuning guitars.
With the free web application, users can select any listed guitar tuning note and various audio samples for each note are played. The application features different ways to listen to the tuning audio including playing a single note continuously, listening to the notes played in one strum, or playing the “tune” option that plays each note five times.
This application was built by…
Unit Testing Your Architecture With ArchUnit
I am a Spring/Java developer (primarily) and an advocate of unit testing.
There is often a debate over what constitutes a unit test, an integration test, a system test, etc. But, most of us agree that tests keep you from going “off the rails” once a project becomes sufficiently complex.
However, I have found very few discussions on architectural tests. What keeps us from deviating wildly unintentionally from our original, planned architecture? And, after all, how many enterprise projects even keep the same architects from the beginning of the initiative to shelving and replacement?
In this blog, I introduce ArchUnit, a Java architecture test library for specifying and asserting architecture rules in plain Java. We’ll discuss how it works to mitigate architectural risks in developing quality enterprise applications…
See Keyhole at Nebraska.Code() 2018 – Sponsoring & Speaking
Keyhole Software is excited to once again be a Gold sponsor of the Nebraska.Code() Conference.
The 2018 conference is Wednesday through Friday, June 6th-8th with excellent technical talks on the schedule. Wednesday will consist of half and full-day workshops, while Thursday and Friday will consist of 100+ one-hour breakout sessions. This year, the conference has moved to the Mid-America Center in Council Bluffs, IA, right across the river from Omaha, NE.
Sessions To Watch
Numerous conference sessions will be led by Keyhole Software team members on a myriad of technical topics. Make sure to attend the following Keyhole sessions when setting your own personal conference calendar…
Blockchain Implementation With Java Code
Bitcoin is hot — and what an understatement that is. While the future of cryptocurrency is somewhat uncertain, blockchain, the technology used to drive Bitcoin, is also very popular.
Blockchain has an almost endless application scope. It also, arguably, has the potential to disrupt enterprise automation. There is a lot of information available covering what and how blockchain works. We have a free whitepaper that goes into blockchain technology (no registration required).
This blog will focus on the blockchain architecture, particularly demonstrating how the “immutable, append-only” distributed ledger works with simplistic code examples.
As developers, seeing things in code can be much more useful in understanding how it works, than simply reading technical articles. At least that’s the case for me. Let’s get started.