Why Governor Limits Exist
By the end of this lesson, you'll be able to:
- Explain why Salesforce enforces per-transaction limits at all
- Connect governor limits to the multi-tenant nature of the platform
- Recognize that this module formalizes ideas already seen throughout the course
Prerequisites: Module 24: "Apex Triggers"
A concept revisited, now formalized
Governor limits have come up repeatedly already: Module 7's "Loops and Governor Limits," Module 18's SOQL-in-a-loop warning, Module 21's SOSL-specific limits. This module gathers everything into one coherent picture, rather than introducing something new from scratch.
The apartment building analogy
Imagine an apartment building with shared water pressure. If one tenant ran every tap in their unit simultaneously for hours, every other tenant's water pressure would drop. A building manager sets fair-use limits per unit specifically to prevent this. Salesforce's shared, multi-tenant servers work the same way — governor limits are the platform's fair-use rules, protecting every org sharing the same infrastructure from any one org's runaway code.
Exercise
As a comment, explain the apartment building analogy in your own words, connecting it to why Salesforce enforces governor limits.
Show hint
Think about what "shared infrastructure" means for Salesforce specifically.
Why Governor Limits Exist Quiz
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Summary
Governor limits exist because Salesforce is multi-tenant — every org shares the same physical infrastructure, and one org's runaway code could otherwise degrade performance for everyone else.