Changes

This is a page that takes a bunch of parameters and settings for operation of the mission. In general, it is just a form that allows admins to set things like the format of the message, the flight ceiling and floor, and the maximum ballast capacity that are used to understand what the transmissions really mean.  

This is a page that takes a bunch of parameters and settings for operation of the mission. In general, it is just a form that allows admins to set things like the format of the message, the flight ceiling and floor, and the maximum ballast capacity that are used to understand what the transmissions really mean.  

== Technical Background ==

== Technical Facts ==

HABMC is written with Ruby on Rails and Angular.js. While in a previous iteration the backend was written with PHP and hosted on GoDaddy, it is currently hosted on Heroku. We have a Postgres database and use NewRelic for analytics.

HABMC is written with Ruby on Rails and React.js, hosted on Heroku. External services include a prediction and navigation server (written in Rust), an InfluxDB for storing high-bandwidth radio transmissions, a Postgres primary database, writer and followers for radio transmission (written in Node), Newrelic for analytics, and Cloudflare as a CDN.

 

So that the data can updated with minimal latency, we open up a websocket connection from the client to the server. Then, as soon as the data changes on the server, such as when a new transmission comes in, a message is sent through the websocket back to the client that tells it to refresh its data. This refresh is done with a HTTP request, rather than sending the data through the websocket, because HTTP requests are much more developed than websockets. These HTTP requests are able to support functionality like authorization, CORS, and caching easily, in addition to avoiding repeated code on the initial load of the page.

== History ==

== History ==