DeskPass Technical Assessment
API
The API is coding using golang with fiber, gorm, and gocron to handle scheduling events.
Running the API
cd apigo run main.go
Data Persistence
I opted to use a sqlite database to store the messages. By using a lightweight database, it does not require a lot of resources to obtain and create new messages. Also, by storing the messages in a database instead of locally would allow the client to be restarted and still be able to retrieve any future scheduled and any previously posted messages.
Problems Faced
One of the biggest challenges that I faced was implementing the WebSockets to use channels to send the messages instead of relying on the cron job implementation. If I used the cron job implementation, when scheduling a message in the future, it would not allow any additional messages to be run until that job finished. By utilizing channels, I could display a message whenever the channel would receive it, and then just use the cron job to send the message to the channel. However, I am unable to figure out why the messages are not being sent to the channel outside of the immediate function for the WebSocket reader.
Client
The client was created using react and tailwindcss.
Running the client
cd clientnpmoryarnnpm startoryarn start
Client Information
The client consists of two pages, the first page is the home screen that shows all of the scheduled messages. The create page is a form that can be filled out to create a new message.
When a message is received, a banner appears at the top of both pages indicating that a new message has been posted.