Yap Han Chiang

@hanchiang

Software engineer | TradFi | Defi

SingaporeJoined June 2022

About

Software engineer based in Singapore

Welcome to my website, where I write mostly on tech-related content to share the things I learned from people and from building projects using different tools.

My interests are in tech, traditional finance, cryptocurrency.

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Yap Han Chiang's blogs

A techie's ramblingsyaphc.com34 posts

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Recently published

YHYap Han Chiangyaphc.comJun 14, 2025 · 3 min read

Reverse engineering CoinMarketCap API

Earlier, I discussed how to set up a TradingView webhook and send notifications to telegram for stocks. The full workflow looks something like this: Before the market opens, send a telegram notification with stock data from TradingView, VIX Central,...

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YHYap Han Chiangyaphc.comAug 11, 2024 · 3 min read

Stocks notification: Building multi-arch docker image

Last year, around the same time, I added a feature in market data notification to scrape the stocks fear greed index from https://edition.cnn.com/markets/fear-and-greed, with selenium and chrome webdriver. Difference in development and production The...

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YHYap Han Chiangyaphc.comMay 28, 2023 · 2 min read

Reverse engineering CryptoPanic REST API

CryptoPanic is a news aggregator website for trending news based on social sentiment. It's a good website for keeping up to date on the latest news, as well as using it as a trading signal. Its compact layout reminds me of hacker news. I was looking ...

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YHYap Han Chiangyaphc.comApr 7, 2023 · 7 min read

Stocks notification: TradingView webhook to telegram

At the start of the year, I worked on a telegram bot that sends market data of certain stocks for the previous day's close to a telegram channel. Features Basic info such as closing price, EMA20, difference between closing price and EMA20 Overexten...

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YHYap Han Chiangyaphc.comNov 1, 2022 · 2 min read

Caching docker layers in github actions and retriggering workflow

Following my previous post on automating infrastructure provisioning, configuration and application deployment, there are 2 areas that I wanted to improve. Cache docker layers in deploy workflow First, docker layers in the build step of the deploy wo...

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Yap Han Chiang

About

Available for

Yap Han Chiang's blogs

Recently published

Reverse engineering CoinMarketCap API

Stocks notification: Building multi-arch docker image

Reverse engineering CryptoPanic REST API

Stocks notification: TradingView webhook to telegram

Caching docker layers in github actions and retriggering workflow

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Yap Han Chiang

About

Available for

Yap Han Chiang's blogs

Recently published

Reverse engineering CoinMarketCap API

Stocks notification: Building multi-arch docker image

Reverse engineering CryptoPanic REST API

Stocks notification: TradingView webhook to telegram

Caching docker layers in github actions and retriggering workflow