very simple microsite for animal rescue
https://fire-animal-rescue.herokuapp.com/
server.js sanitizes and geocodes the google docs spreadsheets. it caches the
spreadsheet for 5 minutes so that most users don't have to wait for google's servers.
public/index.html is the map, javascript, html, css all in one. it's served
by express. it could be served statically through github pages or etc, but that
doesn't really matter either way
The map is powered by Leaflet.
site is on heroku, auto-deploying from master, the server and frontend as one chunk.
You'll need Node.js. Any recent version should do. Install the dependencies with npm or yarn. Then run:
$ npm run start
Deployment is automatic through Heroku. Just merge a PR to master and it'll update.
This runs on a Heroku server. Currently has a hobby Dyno. The main moving piece is the server request that loads from google sheets. This has a cache so that not every request goes through to google. However, Google could go down or rate limit. Unlikely but possible.
More likely is a dramatic change in the spreadsheet. The algorithm tries to be robust, matching any column with 'zip' in it as the zip code so that renamings don't affect it. But if someone were to rename the zip column to something without zip in the name, the dots would disappear. That manifests as a 500 internal error which is visible in Heroku metrics, plus people will obviously notice. The fix is tweaking the algorithm to match.
It's unlikely that CPU or memory would be a problem: memory usage and dyno load are extremely low. Esri might also rate limit access to the wildfire outlines that we're loading from the API, but also, probably not.