SFDCWallah

Future Method:

• Must be static and can only return a void type
• parameters must be primitive data type, array or collections of data
• can’t take standard or custom objects as arguments
• Can’t be used in VF controller
• 50 Future calls
• getContent and getContentAsPDF methods can’t be used
• Order is not guaranteed
• Used to call external web service using callout = true and to solve mixed DML error

For more detailed information follow this link:

https://xperiencepartage.wordpress.com/2018/12/10/future-methods