Triaging slowness

[rahulb99]

Description

Application https://castnxtfall2024-a6422e600193.herokuapp.com loads very slowly when browsing it after X time.

Task

Investigate the slowness and provide possible solutions

[rahulb99]

There are primarily 2 reasons, which together, make the loading times painfully slow:

• The app is running on Heroku Eco Dynos

  If an app has an Eco web dyno, and that dyno receives no web traffic in a 30-minute period, it sleeps. In addition to the web dyno sleeping, if you have a worker Eco dyno, it also sleeps.

• The app is using React for front-end with webpacker for JS bundling & compilation. This step is slow (and increases the Docker image size quite a lot) since we are using many React components.

  Possible solutions:

• Switch to Basic Dynos
• Optimize webpack configuration (remove intermediate files from Docker image, use production mode, remove any development dependencies for production app)