May 15, 2019
The Quest for a better Search
There is search and then there is search. And despite having the same name their meaning, and thus their technical implications, is shaped by the business we are in. Let's have a look at what search in a distributed system is and what problems brings to the table.
I'll be at Xe One Day - Enterprise application, Holiday Inn Venezia, Venezia Mestre. We'll talk about:
- Welcome to the (state) machine
You don't have to be cool to rule my world, KISS.
HTTP is the Microservices way, so it must be used as a communication transport, they say. Is HTTP adding any benefit to our systems? Can it be considered harmful in some scenarios? Are there better approaches? Shedding some light on the system logical architecture might be helpful.
Safety first!
In a distributed system, communication reliability is a key aspect. Orchestrating multiple HTTP calls is generally a bad idea; it's very hard, if not impossible, to be reliable. This is when messaging and patterns like the Outbox come into play.
The fine art of dismantling
What happens when there is the need to write data in a distributed system? What if this data needs to go to different services? How do services participate in this process like they do for the Composition part? This is when ViewModel Decomposition comes into play. Let's have a look at what it is and especially when it's really needed.
Slice it!
We desperately strive to achieve autonomy at the back-end, but not so much when it comes to front-ends. Using ViewModel Composition techniques we can achieve autonomy at the front-end as well. There should not be any such thing as orchestration though.
Turn on the motors
It's time to discover all the nitty gritty details of the Composition Gateway. It's going to be a roller-coaster ride from ASP.Net Core Routing to the composition engine and back. Fasten your seat belt and enjoy the ride!
Read models: a knot to untie
Read models can be a tempting solution when it comes to presenting data in a distributed system. Before going down this route it's important to disclose the very nature of the choice we're going to make. It's a knot to untie.