Complete Guide To Amazon RDS, Scaling With Read Replicas and EF Core

[@MilanJovanovicTech]

Get the source code for this video for FREE → the-dotnet-weekly.ck.page/aws-rds Want to master Clean Architecture? Go here: bit.ly/3PupkOJ Want to unlock Modular Monoliths? Go here: bit.ly/3SXlzSt

[@bphatness3924]

I never miss a Milan video. All serious developers who want to get better should listen to this guy

[@MilanJovanovicTech]

Thank you, very much appreciated! :)

[@josecarlosferrerbermudez5423]

Hello men, you just saved me in a project at my work. Excellent content Excellent work Keep making videos like this this is very helpful

[@MilanJovanovicTech]

Glad to hear that!

[@alexmadnix]

It was very helpful in understanding the Replica DB service. Thank you milan.

[@MilanJovanovicTech]

You're most welcome!

[@trannhan1432]

Thanks Milan. It's really helpful!

[@MilanJovanovicTech]

You're welcome!

[@MrWTFNETWORK]

What if there are schema changes that we create using ef core migrations on the primary database, will the read replica get these changes automatically?

[@MilanJovanovicTech]

No, you'll have to sync the schema changes manually on the read replica

[@levitran99]

Hello milan .I hope you are doing well. Thanks for the helpful videos

[@MilanJovanovicTech]

My pleasure 😊

[@parkerwarner8688]

Does azure have a similar replication service?

[@MilanJovanovicTech]

It's not an AWS/Azure feature, it's a database feature. But yes - Azure also supports this.

[@Filipekuhn11]

Excellent content!

[@MilanJovanovicTech]

Thank you!

[@СвояЛиния-щ2в]

Hi, Milan. I've watched your videos about Result pattern recently and implemented it in my project. It's working good, but I got an issue, where I have a repetitive pattern all over my code: I create some value object (for example: Email) which has a static factory method that returns Result and I have to check if the result is failure, if it is I return the error. If I have entities containing lots of value objects, I have to check every time for the condition in my command handlers. The code becomes cumbersome and messy. How would you deal with this problem? I haven't found any good solution for this problem.

[@MilanJovanovicTech]

"I have to check every time for the condition in my command handlers" - Unfortunately, yes. That is a downside of this approach. It becomes pretty cumbersome when you have many levels of calls all returning a Result.

[@diwa007]

Hey Milan. What's the latency between replicas in RDS? In our environment, we use EC2 replicas and latency is about 3-5 seconds. Any idea how to reduce the high latency?

[@MilanJovanovicTech]

That sounds strange, typically it should be less than 1s. Do you have a very high number of writes?

[@diwa007]

@@MilanJovanovicTech A lot of writes, yes.