Continuous Delivery for Machine Learning
Automating the end-to-end lifecycle of Machine Learning applications Machine Learning applications are becoming popular in our industry, however the process for developing, deploying, and continuously improving them is more complex compared to more traditional software, such as a web service or a mobile application. They are subject to change in three axis: the code itself, the model, and the data
Microservice Trade-Offs
Many development teams have found the microservices architectural style to be a superior approach to a monolithic architecture. But other teams have found them to be a productivity-sapping burden. Like any architectural style, microservices bring costs and benefits. To make a sensible choice you have to understand these and apply them to your specific context. Microservices provide benefits… Stron
bliki: Monolith First
As I hear stories about teams using a microservices architecture, I've noticed a common pattern. Almost all the successful microservice stories have started with a monolith that got too big and was broken up Almost all the cases where I've heard of a system that was built as a microservice system from scratch, it has ended up in serious trouble. This pattern has led many of my colleagues to argue
The LMAX Architecture
LMAX is a new retail financial trading platform. As a result it has to process many trades with low latency. The system is built on the JVM platform and centers on a Business Logic Processor that can handle 6 million orders per second on a single thread. The Business Logic Processor runs entirely in-memory using event sourcing. The Business Logic Processor is surrounded by Disruptors - a concurren
The cover of my Next Book
Books in my signature series use photos of bridges, in homage to my wife's profession. This bridge is The Iron Bridge, the first bridge in the world to be made of iron, back in 1781. It's a symbol of the industrial revolution, which began near where I grew up in the Black Country. The photo is my own, which I took earlier this year. The design of the bridge looks somewhat unusual, nobody had built
bliki: Evaluating Ruby
If you're reading this I assume you're aware of the fact that there's been a huge amount of fuss about the Ruby programming language, and in particular the Rails framework for developing web applications. Some see it as the future of programming, others as a dangerous diversion. I started with ruby several years ago. The pragmatics got me interested and it soon became my preferred scripting langua
bliki: Implicit Interface Implementation
Both Java and C# share the same model of pure interface types. You declare a pure interface by going interface Mailable, then you can declare you implement it with class Customer implements Mailable (in Java). A class may implement any number of pure interfaces. One of the things this model ignores is that you have implicit interfaces whenever you have a class. The public implicit interface Custom
Using the Rake Build Language
Rake is a build language, similar in purpose to make and ant. Like make and ant it's a Domain Specific Language, unlike those two it's an internal DSL programmed in the Ruby language. In this article I introduce rake and describe some interesting things that came out of my use of rake to build this web site: dependency models, synthesized tasks, custom build routines and debugging the build script
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