A technology that has been really helpful as a Java developer is the ability to hot swap code using a technology like jRebel. Not having to restart the application server every time I make a change has really sped up development.
Typical features of an on-demand grocery delivery app
On demand grocery marketplaces aid facilitating the trade between sellers and buyers. They get amazing traffic on their website, they make money with website ads and they can always take a cut every time a trade on the platform takes place.