Don’t Stream JSON Data

I recently published a post about how to stream large JSON payloads from a webservice using a chunked response, before reading this post it's probably best to read that post here. Streaming is a fantastic method of sending large amounts of data with only a small memory overhead on the server, but for JSON data … Continue reading Don’t Stream JSON Data →

Large JSON Responses

The long slog from a 15 year old legacy monolith system to an agile, microservice based system will almost inevitably include throwing some API's in front of a big old database. Building a cleaner view of the domain allows for some cleaner lines to be drawn between concerns, each with their own service. But inside … Continue reading Large JSON Responses →

DDD Europe 2016

The Domain Driven Design Europe happened in January this year in Brussels. Recently, two presentations were made available: Eric Evan's keynote speech is available here. Greg Young presents 'A Decade of DDD, CQRS and Event Sourcing' here. Both are worth a watch. I was particularly interested to hear some of Greg's opinions on what patterns … Continue reading DDD Europe 2016 →

Going Deep Enough with Microservices

Moving from a monolith architecture to microservices is a widely debated process, with many recommendations and nuggets of advice available on the web in blogs like this. There are so many different opinions out there mainly because where an enterprise finds their main complexities lay depends on the skillsets of their technologists, the domain knowledge … Continue reading Going Deep Enough with Microservices →

Events vs Commands

In the world of service oriented architectures and CQRS style processes there is a tendancy for nearly everything to raise events. Going back a few years however, before REST became fashionable many interactions were by RPC and often the result of processing commands from a queue. So when did commands become an anti-pattern? Well of … Continue reading Events vs Commands →

User Secrets in asp.NET 5

Accidentally pushing credentials to a public repo has never happened to me, but I know a few people for whom it has. AWS have an excellent workaround for this by using credential stores that can be configured via the CLI or IDE but this technique only works for IAM user accounts, it doesn't allow you … Continue reading User Secrets in asp.NET 5 →

Code Libraries and Dependencies

Nuget has made it really straight forward to share libraries across multiple applications. It's really straight forward. Just add a nuspec file and run 'nuget pack'. But before you do that next time, spare a thought for the poor dev who's trying to fit your library in their project among a dozen others when any … Continue reading Code Libraries and Dependencies →

A Helpful Circuit Breaker in C#

Introduction With the increasing popularity of SOA in the guise of ‘microservices’, circuit breakers are now a must have weapon in any developer’s arsenal. Services are rarely 100% reliable; outages happen, network connections get pulled, memory gets filled, routing tables get corrupted. In an environment where multiple services are each calling multiple other services, the … Continue reading A Helpful Circuit Breaker in C# →