You can become a serverless blackbelt. Enrol in my course Learn you some Lambda best practice for great good! and learn best practices for performance, cost, security, resilience, observability and scalability. By the end of this course, you should be able to make informed decisions on which AWS service to use with Lambda and how to build highly scalable, resilient and cost efficient serverless applications.
You should already know that in C# all types derive from System.Object and that C# supports both reference types (which are allocated onto the heap) as well as value types (primitives, enum, struct, etc. which are allocated onto the stack).
One of the key differences between value types and references types is that when you pass a reference type around the reference (essentially a 32-bit integer which references a location in the heap where the actual object is stored) is copied not the object but when you pass a value type around a clone of the object is created and returned instead.
In terms of equality comparison this means reference comparison will ALWAYS fail for two value type objects, and for this reason, the base class of all value types – ValueType – overrides the virtual Object.Equals method to compare all member variables in a derived type rather than the reference.
Override the default Equals method
Without knowing the runtime names and types of the member variables, the default implementation of ValueType.Equals relies on the use of reflection and reflection as we all know, is slow. As a general rule of thumb, it’s recommended that you ALWAYS override the ValueType.Equals method when creating your custom value type and you should strongly consider overloading the == and != operators too whilst you’re at it!
I specialise in rapidly transitioning teams to serverless and building production-ready services on AWS.
Are you struggling with serverless or need guidance on best practices? Do you want someone to review your architecture and help you avoid costly mistakes down the line? Whatever the case, I’m here to help.
Check out my new podcast Real-World Serverless where I talk with engineers who are building amazing things with serverless technologies and discuss the real-world use cases and challenges they face. If you’re interested in what people are actually doing with serverless and what it’s really like to be working with serverless day-to-day, then this is the podcast for you.
Check out my new course, Learn you some Lambda best practice for great good! In this course, you will learn best practices for working with AWS Lambda in terms of performance, cost, security, scalability, resilience and observability. We will also cover latest features from re:Invent 2019 such as Provisioned Concurrency and Lambda Destinations. Enrol now and start learning!
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Are you working with Serverless and looking for expert training to level-up your skills? Or are you looking for a solid foundation to start from? Look no further, register for my Production-Ready Serverless workshop to learn how to build production-grade Serverless applications!
Here is a complete list of all my posts on serverless and AWS Lambda. In the meantime, here are a few of my most popular blog posts.
- Lambda optimization tip – enable HTTP keep-alive
- You are wrong about serverless and vendor lock-in
- You are thinking about serverless costs all wrong
- Just how expensive is the full AWS SDK?
- Many faced threats to Serverless security
- We can do better than percentile latencies
- Yubl’s road to Serverless
- AWS Lambda – should you have few monolithic functions or many single-purposed functions?
- AWS Lambda – compare coldstart time with different languages, memory and code sizes
- Guys, we’re doing pagination wrong
- Top 10 Serverless framework best practices