Wojciech Matuszewski

programming-notes. Programming notes. About anything really.

cdk-lambdaless-apigw-websockets. Abusing StepFunctions so that I do not have to write any Lambda code.

testing-step-functions. TypeScript

one-time-use-presigned-url. An example of how one might leverage CloudFront to create one-time use presigned urls

stockwatch-app. TypeScript

next-appsync-cdk. An example app where I used aws cdk, next.js and appsync to make basic todo list work.

iot-core-feature-flags. A very very simplified, hacky implementation of feature flag service using IOT Core MQTT capabilities

AppSyncPipelineResolvers. Pipeline resolvers example with cdk.

cw-insights-prepopulated-queries. Let us make the "Queries" tab in CloudWatch Insights useful!

PartyPlanner. React app in progress, full code available on bitbucket: https://bit.ly/2HLozio

serverless-video-transcribe-fun. Playing around with EFS and the idea of transcribing videos on AWS.

graphql-for-frontend-engineers. Workshop material

testing-serverless-architectures. Going through the "Testing Serverless Architectures" course and writing what I've learned.

etl-step-functions. Example ETL pipeline made possible by the magic of step functions :)

APIGW-websockets. APIGW websockets using SAM framework written in Golang.

cdk-boilerplate. I do a lot of cdk, this is a boilerplate I use.

lambda-wrapper-scripts-abuse. How one might abuse AWS Lambda wrapper scripts for cost savings.

s3-object-lambda. Learnings about s3-object lambda

scheduler-auto-delete-one-off. Delete the one-off schedules of EventBridge Scheduler automatically

codecrafters-docker-go. Go

ai-weather-checker. A very simplistic application to test the `runTools` API exposed by `openai` SDK.

dynamodb-pagination-gotcha. TypeScript

uploading-images-sharp. TypeScript

AWS-Cognito-magic-links. An example how one might implement the magic links feature using AWS Cognito

testing-vtl. An example how to setup tests for your vtl mapping templates when working with AppSync - without amplify.

rust-learning-sam-basic-app. A very basic api deployment using AWS SAM and Rust

apigw-load-test-sfn. How to load test APIGW endpoint with AWS Step Functions

github-oidc-aws-cdk-example. Creating IAM User-free deployment pipeline by utilizing GitHub OIDC provider.

codecrafters-grep-rust. Rust

aws-cfn-resource-picker. Learning Rust and playing around with CFN

loan-broker-sfn. Go

step-functions-ses-approval. Approval process, sends email using ses, orchestration done using step functions

aws-lambda-go-middleware. My take on middlewares and aws-lambda-go/lambda package. Maybe we can build middy out of this 🤔

ddb-single-table-step-functions. Creating an API backed by Amazon Step Functions utilising AWS DynamoDB as data layer (single-table)

capturing-events-apigw-eventbridge. Direct APIGW integration with EventBridge along all of its quirks.

eb-events-to-cw-logs-formatting. How to format the EB event payload using InputTransformer so that CW logs accepts it.

next13-rsc-search. Playing around with RSCs and Prisma

testing-appsync-vtl-templates-strategies. I know at least four ways one can test their AWS AppSync mapping templates.

apigw-websocket-graphql-api. Working example on how to implement graphql API (with subscriptions) using apigw

appsync-public-private-cognito. Public public / private operations with cognito (identity pools and IAM)

apigw-rest-sfn-direct-integration-example. An example of how to integrate API Gateway REST API with Step Functions via direct integration.

codecrafters-git-go. Go

eb-appsync-subscriptions-example. How to trigger AWS AppSync subscription via EventBridge event

cdk-go-concurrency-control. Concurrency control implementation based on sfns (https://aws.amazon.com/blogs/compute/controlling-concurrency-in-distributed-systems-using-aws-step-functions/)

scheduler-app-rust. Learning the EB Pipes and the Scheduler