.NET Memory Performance Analysis
Know when to worry about it, and what to do if you need to worry about it 

I have always wanted to learn how to make an OS from scratch. In college I was taught how to implement advanced features (pagination, semaphores, memory management, etc) 

The missing scope - Tenant-Singleton

If a singleton is created once per application, you can probably guess that a tenant-singleton is created once per tenant.

So when might you need this scope? Think of any object that is expensive to create or needs to maintain state yet should be isolated for each tenant. Good examples would be NHibernate's Session Factory, RavenDB's Document Store or ASP.NET's Memory Cache. 

Chrome, at least in its experimental Canary version on Android (and only for users in the U.S.), is getting an interesting update in the coming weeks that brings back RSS, the once-popular format for getting updates from all the sites you love in Google Reader and similar services. 

This video shows how to create a microservice from scratch using .NET 5. You will learn:
• How to create a .NET 5 microservice from scratch
• Build and debug a .NET 5 project in VS Code
• Interact with your microservice endpoints via Open API and Postman
• Keep configuration and secrets separate from your service code
• Simplify http requests to external endpoints
• Deal with transient errors on external services
• Report the health of the service and its dependencies
• Produce logs suited for a microservice environment 

A Tour of Go (golang) for the C# Developer

Learning other programming languages enhances our work in our primary language. From the perspective of a C# developer, the Go language (golang) has many interesting ideas. Go is opinionated on some things (such as where curly braces go and what items are capitalized). Declaring an unused variable causes a compile failure; the use of "blank identifiers" (or "discards" in C#) are common. Concurrency is baked right in to the language through goroutines and channels. Programming by exception is discouraged; it's actually called a "panic" in Go. Instead, errors are treated as states to be handled like any other data state. We'll explore these features (and others) by building an application that uses concurrent operations to get data from a service. These ideas make us think about the way we program and how we can improve our day-to-day work (in C# or elsewhere).

0:00 Welcome to Go
2:40 Step 1: Basics
12:20 Step 2: Calling a web service
23:35 Step 3: Parsing JSON
36:26 Step 4: "for" loops
41:00 Step 5: Interfaces and methods
50:05 Step 6: Time and Args
55:10 Step 7: Concurrency
1:07:10 Step 8: Errors
1:14:40 Step 9: Concurrency and errors
1:24:35 Where to go next 

sqlfmt is an online SQL formatter. It is pronounced sequel fumpt. Its purpose is to beautifully format SQL statements.  

It has never been so easy to document your things!