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Derek Comartin

Practical Microsoft Orleans

I’ve been wanting to take a deeper dive into Microsoft Orleans for awhile now.  With the next release targeting .NET Standard 2.0, it felt like an great time to do it.  This is the first blog post in a series that will go beyond a simple Hello World.  The plan is to make this a practical Microsoft Orleans guide to follow along with. Blog Post Series: Part 1 – Practical Orleans Part 2 – Grains and Silos Part 3 – Smart Cache Pattern Part 4 – Event Sourced Grain Part 5 – EventStore for Grain Persistence Microsoft Orleans If you… Read More »Practical Microsoft Orleans

Tackling Technical Debt using NDepend

Technical debt is an interesting term in our industry.  To a certain degree I feel like its a bit overloaded now.  Everyone has a slight variation of what their definition of it is.  I often think the variation revolves around Fowler’s “reckless vs prudent, the second, deliberate vs inadvertent.”. Regardless, I think the general concept that is in everyone’s definition is that technical debt, if not paid back over time, can cause a code base to be unmanagable.  The length of time to deliver value increases because of the complexity. Just a refresher per Ward Cunningham: Shipping first time code is like… Read More »Tackling Technical Debt using NDepend

EF Core Multi-Tenancy: Query Filter

There are many different ways to handle multi-tenancy.  This blog post will cover one approach to EF Core Multi-Tenancy that will work if you are using a shared database approach, meaning you use the same database for multiple tenants, that are disambiguated using tenant ID column. If you want more details on Multi-Tenancy, check out the Microsoft Docs on the topic, related to designing multi-tenant apps using Azure SQL Database. Entity Let’s jump right into some sample code of a simple Entity that represents a customer.  Notice the TenantId. View the code on Gist. Filter The approach we are going… Read More »EF Core Multi-Tenancy: Query Filter