Johan Hernefeldt's starred repositories
system-design-primer
Learn how to design large-scale systems. Prep for the system design interview. Includes Anki flashcards.
signoz
SigNoz is an open-source observability platform native to OpenTelemetry with logs, traces and metrics in a single application. An open-source alternative to DataDog, NewRelic, etc. 🔥 🖥. 👉 Open source Application Performance Monitoring (APM) & Observability tool
Flipper-IRDB
A collective of different IRs for the Flipper (maintained)
aaveFlashLoan
1st Place 🏆 in the Gitcoin Web3 World Aave Hackathon. A bot that does arbitrage between two Uniswap exchanges using an Aave Flashloan as the capital for initial trade. Got a nice write up from the Aave team - https://medium.com/aave/gitcoin-x-aave-hackathon-recap-f61d24af2cb
devops-kungfu
Chef Style DevOps Kung fu
template-ethereum-contracts
Template to develop ethereum smart contracts
typescript-solidity-dev-starter-kit
Starter kit for smart contract development using Typescript
tcp-over-http
A TCP proxy using HTTP - Reach SSH behind a Nginx reverse proxy
nft-token-drop
A drop-in contract to airdrop all current holders of an NFT with an ERC20 token
sapper-firebase-typescript-graphql-tailwindcss-actions-template
A template that includes Sapper for Svelte, Firebase functions and hosting, TypeScript and TypeGraphQL, Tailwind CSS, ESLint, and automatic building and deployment with GitHub Actions
interactive-frame-tfjs
Interactive digital art with head-coupled perspective effect using Three.js and TensorFlow.js
http-graceful-shutdown
Gracefully terminates HTTP servers in Node.js
simple_taxes
Crypto taxes made simple
forevermore
Commit your marriage vows on the blockchain (open-source)
crypto-tax-calculator
A tool to calculate the capital gains of cryptocurrency assets for Canadian taxes.
solidity-playground
Playground for experimentation with Solidity and co.
istio-upgrade-demo
Upgrading Istio with 0 downtime
global-accelerator-pulumi
AWS Global Accelerator Created Using Pulumi.