06 · Governor limits explained

100 queries, 150 DML statements, 10 seconds of CPU — the limits are not obstacles, they are the platform's design language.

Why limits exist

You share the server with thousands of orgs. Limits are how everyone's code stays fast — and they quietly teach you to write better Apex than you would elsewhere.

Reading a limit exception

'Too many SOQL queries: 101' tells you exactly what happened: a query inside a loop met 200 records. We trigger the error on purpose and then fix it.

Practice in your org

• Open your Developer Edition org and follow along step by step
• Change one thing at a time and note what happens
• When something breaks, read the error before searching for it