--- title: "john walker (@uzusan) | Hashnode" description: "AWS Solutions Architect / Well Architected Team Lead. Read the latest articles by john walker on Hashnode." url: "https://hashnode.com/@uzusan" --- @uzusan # john walker @uzusan · Glasgow, Scotland · Joined October 2020 AWS Solutions Architect / Well Architected Team Lead [Website](http://johnwalker.tech/) ### [Microservices and Eventbridge](https://blog.johnwalker.tech/microservices-and-eventbridge?utm_source=hashnode&utm_medium=feed) Microservices Microservices are a software development pattern that breaks down a large application into smaller independent services. • Small subsets of functionality but self-contained • Size is variable but should generally be small enough to fit ... 8 min read · [blog.johnwalker.tech](https://blog.johnwalker.tech/microservices-and-eventbridge?utm_source=hashnode&utm_medium=feed) [Mar 14, 2023](https://hashnode.com/posts/microservices-and-eventbridge/6410670a8a83376387a53359) ### [Learning Machine Learning](https://blog.johnwalker.tech/learning-machine-learning?utm_source=hashnode&utm_medium=feed) I'm in the process of working through some Machine Learning Training at the moment, with the aim of taking the AWS Machine Learning Speciality Exam and I've had some thoughts on Machine Learning training and learning as a whole that I'd like to shar... 6 min read · [blog.johnwalker.tech](https://blog.johnwalker.tech/learning-machine-learning?utm_source=hashnode&utm_medium=feed) [Jul 26, 2021](https://hashnode.com/posts/learning-machine-learning/60fead30fa408f0c89bd2ad7) ### [Elastic Compute Cloud: EC2 (Intro to AWS Series) Part 3](https://blog.johnwalker.tech/elastic-compute-cloud-ec2-intro-to-aws-series-part-3?utm_source=hashnode&utm_medium=feed) Welcome to Part 3 of my EC2 section of my Intro to AWS series. This is a continuation of part 1 and part 2, which you can read here: https://blog.johnwalker.tech/elastic-compute-cloud-ec2-intro-to-aws-series and here: https://blog.johnwalker.tech/ela... 14 min read · [blog.johnwalker.tech](https://blog.johnwalker.tech/elastic-compute-cloud-ec2-intro-to-aws-series-part-3?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/elastic-compute-cloud-ec2-intro-to-aws-series-part-3/5fc29f3129ee3663480ca235) [Nov 28, 2020](https://hashnode.com/posts/elastic-compute-cloud-ec2-intro-to-aws-series-part-3/5fc29f3129ee3663480ca235) ### [Elastic Compute Cloud: EC2 (Intro to AWS Series) Part 2](https://blog.johnwalker.tech/elastic-compute-cloud-ec2-intro-to-aws-series-part-2?utm_source=hashnode&utm_medium=feed) Welcome to Part 2 of my EC2 section of my Intro to AWS series. This is a continuation of part 1, which you can read here: https://blog.johnwalker.tech/elastic-compute-cloud-ec2-intro-to-aws-series. In this post, I will continue with some topics I me... 8 min read · [blog.johnwalker.tech](https://blog.johnwalker.tech/elastic-compute-cloud-ec2-intro-to-aws-series-part-2?utm_source=hashnode&utm_medium=feed) [Oct 25, 2020](https://hashnode.com/posts/elastic-compute-cloud-ec2-intro-to-aws-series-part-2/5f95e12340346172a86c297a) ### [Using Virtualenv in Python](https://blog.johnwalker.tech/using-virtualenv-in-python?utm_source=hashnode&utm_medium=feed) Keeping track of which external software libraries you have used in your programs and what the requirements are for running your code is a key part of good coding. Being able to get your code up and running on a new install or just knowing which depe... 4 min read · [blog.johnwalker.tech](https://blog.johnwalker.tech/using-virtualenv-in-python?utm_source=hashnode&utm_medium=feed) [Oct 25, 2020](https://hashnode.com/posts/using-virtualenv-in-python/5f95be09fbdce372c9a57dda)