A pretty epic video from Scrimba’s Bob Ziroll that you’ll need a lot of coffee to get through, but you get to see the development of a complete app based around React Router, and it’s free. 

Partial views in ASP.NET MVC allow you to reuse and customise components to act like user controls. They consist of both code and markup. They are an idea that is easy to grasp but they have great potential for the more adventurous developer who is prepared to experiment. Dino Esposito explains 

Firefox Developer Edition 44, released last week, includes a brand new memory tool to help you understand how your web applications are using and retaining memory.  

In Chrome 80 and later, cookies will default to SameSite=Lax. This means that cookies will automatically be sent only in a first party context unless they opt-out by explicitly setting a directive of None.
But if you’re a web developer, you should start testing your sites and services now to help ensure a smooth transition. 

Use of the library does involve having an Apple Developer account at $99 a year , and to use the beta, developers will need to set up core Maps identifiers, keys, and tokens via their developer account. The beta version limits usage to  250,000 instantiations and 25,000 service calls, per API key per day, compared to Google's limit of 100,000 map instantiations per month on the free tier. 

In any good programming reference, you will read that a developer has to document his code, not only for him/herself, but also for the person who, ten years later will be asked to maintain it. This would, of course, be made easier thanks to a good documentation of existing code. 

How Much Memory Do You Need to Run 1 Million Concurrent Tasks?

Discover .NET 8 Preview 3! The 7 Features You Need to Know