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#Video

 Modeling Uncertainty • Vaughn Vernon

The foundation ideas behind Domain-Driven Design, or DDD, are fundamentally the same as when Eric Evans brought them to our attention through his seminal work. The Bounded Context with its Ubiquitous Language is still of chief importance, along with mapping various Bounded Contexts to form a whole system solution. Even so, what has changed substantially is the computing landscape on which software developers construct and release these solutions. Systems are far more likely to be distributed, especially due to the [...]

Architecture DDD Video

Jun 24 2020

 "What is a Coroutine Anyway?" - John Reese

This talk will start with basic concepts of functions, including how they are represented in memory, how state is tracked, and how function calls interact with the stack. We’ll then cover the common methods of running multiple functions concurrently, as well as the benefits and difficulties of concurrency in Python. We’ll then introduce the concept of coroutines, a variant of functions, and discuss how coroutines manage state and execution differently from functions. We’ll show some high level examples of coroutines that communicate with each other, and look at how they can be of use for I/O bound workloads. Then we’ll finish by showing how coroutines are implemented in Python, what the async/await keywords are actually doing when you use them in your code, and how all of these concepts are leveraged by the AsyncIO framework to build high performance applications in modern, clean Python. AsyncIO uses coroutines to deliver high performance from a single thread. But coroutines can be mysterious. How do they work? Starting from first principles, we’ll take a look at the basic concepts of coroutines and the unique problems they solve, then finish by deconstructing the core pieces of the AsyncIO framework. This talk is for developers of all backgrounds. No CS degree required!

Async Python Video

Jun 12 2020

 Python Standard Library: The Hidden Gems

The Python Standard Library is a very rich toolset, which is the reason why Python is stated to come with ""batteries included"". In such an amount of features and tools it's easy to get lost and miss some of the less unknown modules or gems hidden within the whole load of functions and classes. This talk aims at showcasing some recipes, snippets and usages of standard library modules and functions that are less known or that are not covered in the most common books and tutorials available for Python. The talk will try to showcase a bunch of short examples in the hope to foster the ""oh, wow! I didn't think about that"" reaction at least once in the audience. We will see how frequently for tasks where you used third party libraries or frameworks a solution bultin into the standard library is already available, and such solution is guaranteed to be maintained and well working for the years to come thanks to the standard library reliability and stability.

Python Snippet Video

Jun 8 2020

 Lynn Root - Advanced asyncio: Solving Real-world Production Problems

Everyone’s talking about it. Everyone’s using it. But most likely, they’re doing it wrong, just like we did. By building a simplified chaos monkey service, we will walk through how to create a good foundation for an asyncio-based service, including graceful shutdowns, proper exception handling, and testing asynchronous code. We’ll get into the hairier topics as well, covering topics like working with synchronous code, debugging and profiling, and working with threaded code. We’ll learn how to approach asynchronous and concurrent programming with Python’s `asyncio` library, take away some best practices, and learn what pitfalls to avoid.

Async Python Video

Jun 8 2020

 No Return: Beyond Transactions in Code and Life • Avdi Grimm

At the root of catastrophes in both code and life lies a pervasive fallacy: the attempt to model processes as if they were transactions. Join Avdi for an honest, sometimes raw retrospective on two decades of building a software development career. You’ll examine how personal philosophy impacts software design — and vice-versa. You’ll encounter the transactional fallacy and how it can hinder our attempts to build resilient systems. And you’ll explore how a narrative-oriented mindset can lead to both better code and a more joyful [...]

Philosophy Video

Jun 8 2020

 David Beazley - Lambda Calculus from the Ground Up - PyCon 2019

These days, programming style guides are all the rage. However, what if your style guide was so restrictive that it only gave you single-argument functions and nothing else? No modules, no classes, no control flow, no data structures, and not even any primitives like integers or regular expressions. Just functions. Could you actually program anything at all? Surprisingly, the answer is yes. In this tutorial, you'll learn how as you work through a ground-up derivation of the lambda calculus in Python. You will learn nothing practically useful in this tutorial. No packaging. No tools. No libraries. No deployment. No magic Python programming techniques. And certainly learn nothing you would ever want to apply to a real project. You will, on the other hand, have a lot of fun, be completely amazed, and learn some foundational computer science that is a jumping off point for further explorations of functional programming, type theory, programming languages, and more.

David Beazley Lambda Calculus Video

Jun 4 2020

 Building Microservices with Go - Nic Jackson

Twice weekly live stream teaching you how to build Microservices using the Go programming language. Series Content: Over the weeks we will look at the following topics, teaching you everything you need to know regarding building microservices with the go programming language: - Introduction to microservices - RESTFul microservices - gRPC microservices - Packaging applications with Docker - Testing microservice - Continuous Delivery - Observability - Using Kubernetes - Debugging - Security - Asynchronous microservices - Caching - Microservice reliability using a Service Mesh

Go Microservices Playlist Video

Mar 24 2020

 PyCon Ireland 2019 - Unit & Integration Testing

Testing is an important part of the software development life cycle, however we don't always stress the importance of it. There are dozens of different types of testing and each one has its own purpose. In order to clarify/revisit two of the more common testing types used by developers, here are some concept definitions and best practices around them.

Testing Unit Testing Video

Mar 24 2020

 Hacking Society

Bruce Schneier, Security Technologist, Researcher and Lecturer, Harvard Kennedy School A computer security mindset is essential to understanding the security of complex technological systems. As we move into a world where all social, economic and political systems are to some extent technological, we need to extend this way of thinking. Come learn how to hack—and then defend—society’s core systems: elections, the market economy, lawmaking, tax policy, journalism and more.

Hacking Security Video

Mar 2 2020