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The pages with AJAX on were feeling quite sluggish, and it felt like they were making the whole browser slow down. Looking at the performance stuff in Chrome, the number of DOM nodes was going up and up, which is weird because the number of things on the page wasn’t changing. This was causing the page to consume more and more memory in order to store all these nodes. This is kinda beyond my understanding, but I tried a few things and it looks like the browser was having a hard time garbage collecting the temporary bits of DOM used to update the page. By assinging these bits of DOM to variables before using them it seems that the browser has an easier time cleaning them up.
notifications-admin
GOV.UK Notify admin application.
Features of this application
- Register and manage users
- Create and manage services
- Send batch emails and SMS by uploading a CSV
- Show history of notifications
First-time setup
Languages needed
- Python 3
- Node 5.0.0 or greater
brew install node
NPM is Node's package management tool. n is a tool for managing
different versions of Node. The following installs n and uses the latest
version of Node.
npm install -g n
n latest
npm rebuild node-sass
The app runs within a virtual environment. To install virtualenv, run
[sudo] pip install virtualenv
Make a virtual environment for this app:
mkvirtualenv -p /usr/local/bin/python3 notifications-admin
Install dependencies and build the frontend assets:
./scripts/bootstrap.sh
Rebuilding the frontend assets
If you want the front end assets to re-compile on changes, leave this running in a separate terminal from the app
npm run watch
Create a local environment.sh file containing the following:
echo "
export NOTIFY_ADMIN_ENVIRONMENT='config.Development'
export ADMIN_CLIENT_SECRET='dev-notify-secret-key'
export ADMIN_CLIENT_USER_NAME='dev-notify-admin'
export API_HOST_NAME='http://localhost:6011'
export DANGEROUS_SALT='dev-notify-salt'
export SECRET_KEY='dev-notify-secret-key'
export DESKPRO_API_HOST=""
export DESKPRO_API_KEY=""
export DESKPRO_PERSON_EMAIL=""
export DESKPRO_DEPT_ID=""
export DESKPRO_ASSIGNED_AGENT_TEAM_ID=""
"> environment.sh
Running the application
workon notifications-admin
./scripts/run_app.sh
Then visit localhost:6012