https://github.com/davemo/geohashing-exercise

An exercise for pairing with people to learn Node
https://github.com/davemo/geohashing-exercise

Last synced: about 1 year ago
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An exercise for pairing with people to learn Node

• Host: GitHub
• URL: https://github.com/davemo/geohashing-exercise
• Owner: davemo
• Created: 2014-05-01T15:55:35.000Z (about 12 years ago)
• Default Branch: main
• Last Pushed: 2021-11-20T00:47:06.000Z (over 4 years ago)
• Last Synced: 2025-03-26T20:56:46.174Z (about 1 year ago)
• Language: JavaScript
• Size: 4.88 KB
• Stars: 2
• Watchers: 6
• Forks: 11
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Geohashing Exercise

Implement a geohashing restful service, as described in XKCD:

![XKCD](http://imgs.xkcd.com/comics/geohashing.png)

Given: `GET /geohash?lat=37.421542&lon=-122.085589`

Expected Output from API: `=> 200 application/json {lat: 37.857713, lon: -122.544543}`

# Inputs

- Dow Opening Query:

`curl "https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=NDX&apikey=YOUR_API_KEY"`

- (if you get an API error you may need to get an API key here: https://www.alphavantage.co/)

# Extra Credit

- Accept lat/lon as POST

- Abstract the geohashing logic into a separate module

- Cache the dow opening API call to occur once per day

- Write unit tests for the module _and/or_ TDD your way there!

- Use pipe instead of a callback to handle the stock call

- Implement a "cacheable" function that takes as input a function to cache, and a cacheKey such that when you compose the functions together ie: `cacheable(myFunc() {..}, "my-cache-key")` you are returned a function that caches results for that key; use this function as your caching strategy

- Implement a promise-based API

- Make the promise-based API also handle callbacks :)