💬 In plain words: The @future annotation is the original "fire-and-forget" asynchronous tool in Salesforce. You tag a static method, and the platform runs it later. However, its strict limitations—only accepting primitive data types, no ability to chain jobs, and no traceable Job ID—are the exact reasons Queueable Apex was created to replace it. Today, @future is mainly used as a quick escape hatch for Mixed-DML errors. 📌 The Problem: In legacy code, a trigger might call @future(callout=true) to push data to an external ERP. It works fine until a developer tries to trigger that same logic from a Batch Apex job, resulting in the dreaded error: "future method cannot be called from a future or batch method." The Fix: The modern solution is to rewrite that logic as a Queueable class, leaving @future purely for resolving quick Setup vs. Non-Setup object conflicts (Mixed-DML). 🎬 Real-Life Example: The Stale Snaps...
Apex & Dev