Client's management team needs to see the overall store's sales updates on their phone as customer has multiple branches and software will work offline all times.
The important challenge faced is that our application will be connected to network only for sometimes. It may lead to unexpected errors if the internet is disconnected during a sync process. So the details can’t sync with cloud all the time.
It is better to handle SMS, if the data is in One Place (Server), for that sync process is used. Data transfer is done by using Curl for every 30 mins. Data unavailable in the server is sent for adding in the Server Database. Initially API is triggered to the server. Database Tables have a Unique ID (Primary Key). These data are taken and are prepared in the format which are required in Server Database. Only partial data is taken in the Server Database, so that API time will be reduced and performance will be increased. Then those data are retrieved in Server and saved in the Database.
To send the data, various problems have been overcome like Data parsing, sending the Data to server using Rest API method, Data Saving in Server based on Server Load on that time, etc.
We added manual sync with internet connectivity test & verification of completed sync. So if sync process is interrupted by the internet connection, it will automatically mark as incomplete by the server. So it made the sync process faster.
The billing application made for our retail chain stores is really good and user friendly in practical execution. The best part is that, Support & Services rendered thereafter the sales closure.
Thank you so much for the development. Have a great year ahead. Kudos
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