What is difference between synchronous and asynchronous apex?
In Synchronous process the thread waits for the task to be completed and then moves to the next task Sequentially. All the tasks are completed in a single thread. In Asynchronous apex the thread does not waits for the task to be completed to move on to the next task.
Why we need to follow the Apex governor limits?
Why Salesforce has Governor Limits? Because Apex runs in a multitenant environment, the Apex runtime engine strictly enforces limits to ensure that runaway Apex code or processes don’t monopolize shared resources.
Can I schedule a Queueable apex?
For Apex processes which run for a very long time, so as large database operations rather external Web service callouts, we can run them asynchronously with performing the Queueable interface also attaching a task to that Apex job queue.
What’s the difference between asynchronous and synchronous execution in apex?
So any calling method which calls Asynchronous apex wont wait for outcome of Asynchronous call. Calling method will go on further execution in code. And Asynchronous execution happens in sperate thread and then it will return to main program. Above said is at very basic and rough level description.
How are asynchronous processes executed in Salesforce?
Asynchronous processes are queued in salesforce and are executed as soon as resources are available. But there is no guarantee when this will be executed. Hence not suitable for processes if some time sensitive action is planned based on the outcome of this process Asynchronous processing includes @future Apex, batch Apex or scheduled apex.
What happens when an API call is synchronous?
In a Synchronous, the code runs in an unmarried thread. If an API call is synchronous, it method that code execution will block (or wait) for the API call to go lower back in advance than persevering with.
What is the difference between synchronous and asynchronous?
Synchronous means user cannot perform other operations like clicling around on other views/screens/fields till the operation is completed.