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Maciej Radzikowski Profile picture
Maciej Radzikowski
@radzikowski_m
🛠️ AWS Community Builder ☁️ Doing serverless on AWS 📚 Sharing knowledge: bite-sized tips on Twitter and longer ones on https://t.co/sqFSZhgkbM
Nov 23, 2022 • 12 tweets • 3 min read
I've passed 7 AWS Certification exams, all on the first attempt.

How? And WHY? 🤨

I gathered all my tips and tricks, including:
- which Cert to select?
- how to prepare?
- how to solve questions?
- how to pay only 50%?
and more.

A post and a thread 👇
betterdev.blog/how-to-pass-aw… I tweeted a guide after passing the DevOps Professional exam...
Nov 2, 2022 • 19 tweets • 3 min read
This week I passed the AWS Architect Professional exam 🎉

Here are my hints on preparing, exam scope, understanding questions, and some pro tips!

A thread 🧵👇 AWS Certified Solutions Arc... 🧑‍🎓 Learning

Video courses provide the best source of condensed knowledge for exams. My choice is always @StephaneMaarek courses on Udemy.
Sep 29, 2022 • 19 tweets • 6 min read
While I was vacationing 🌴, AWS Step Functions got new intrinsic functions. Let's check them out!
permanently delete
They added 14 new functions, making it 18 in total.

A thread 🧵👇
(with code examples!) Image A quick Step Functions recap:
Jul 11, 2022 • 12 tweets • 3 min read
Structuring a real-life serverless application

There are hundreds of tutorials on creating a Lambda function with API Gateway.

But there is much less about how to build real-life serverless applications with dozens of resources.

A post and a thread 🧵👇
articles.alfa1.com/serverless-pro… 1️⃣ Monorepo

Splitting the application into multiple deployment units (like CloudFormation stacks) and being able to deploy them individually let us:

- (re)deploy faster
- reduce merge conflicts
- not worry about the CF resources count limit
Jun 1, 2022 • 15 tweets • 5 min read
AWS AppSync added new $utils to VTL.

Let's look at the new and existing AppSync $utils with 9 code examples!

A thread 🧵👇 VTL, the Velocity Template Language, is used to build JSONs for AppSync Resolvers. VTL allows putting logic in the Resolvers' behavior.

$util provides a set of functions with rich capabilities to enhance this logic without utilizing additional Lambda functions.
Apr 12, 2022 • 6 tweets • 2 min read
A handy Decision Tree for choosing the right messaging service on AWS.

As per my calculations, following it gives you a 90% chance of making the right choice.

Read more in the thread 🧵👇 Image I did a summary and comparison of SQS, SNS, EventBridge, and Kinesis in a thread a while ago.
Feb 9, 2022 • 19 tweets • 5 min read
AWS Step Functions overview

A thread 🧵👇
(with images!) 1️⃣ What is AWS Step Functions?

Serverless, low-code service to build and visualize workflows orchestration.
Jan 13, 2022 • 22 tweets • 4 min read
This week I passed the AWS DevOps Professional exam 🎉

Here is a little guide - scope, what to pay attention to, and how I prepared for it in less than 2 weeks.

A thread 🧵👇 📖 Learning

While I generally don't like video courses, I did not find any better way for preparing for the exams. They provide condensed knowledge on the exam scope.

My choice: @StephaneMaarek course on Udemy.
May 18, 2021 • 12 tweets • 4 min read
AWS messaging solutions - where to use which one 🤔

SQS vs SNS vs Kinesis vs EventBridge

A thread 🧵 👇 A common goal for all messaging solutions is to decouple the Producer and the Consumer.

The Producer does not know about the Consumer(s), and vice versa.

But depending on the use case, we have to choose an appropriate solution.