What is Synchronous and Asynchronous in Salesforce.

What is Synchronous and Asynchronous in Salesforce. Apex can be executed synchronously or asynchronously. Synchronous: In a Synchronous call, the thread will wait until it completes its tasks before proceeding to next. In a Synchronous call, the code runs in single thread. Example: Trigger Controller Extension Custom Controller Asynchronous: In a Asynchronous call, the thread will not wait until it completes its tasks before proceeding to next. Instead it proceeds to next leaving it run in separate thread. In a Asynchronous call, the code runs in multiple threads which helps to do many tasks as background jobs. Example: Batch @future Annotation ...

Read more »