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What does it mean to bulkify your code in apex?
Preface: this post is part of the Bulkify Your Code series. You’ll often hear Apex developers say “bulkify your code!” To bulkify your code means to combine repetitive tasks in Apex! It’s the only way to get around Governor Limits – especially our #1 most important limit!
How do you schedule a class in apex?
Using the System.Schedule Method After you implement a class with the Schedulable interface, use the System.Schedule method to execute it. The scheduler runs as system—all classes are executed, whether or not the user has permission to execute the class. Use extreme care if you’re planning to schedule a class from a trigger.
Can You update a scheduled job in apex?
If there are one or more active scheduled jobs for an Apex class, you cannot update the class or any classes referenced by this class through the Salesforce user interface.
How does the apex scheduler work in Salesforce?
Implementing the Schedulable Interface To schedule an Apex class to run at regular intervals, first write an Apex class that implements the Salesforce-provided interface Schedulable. The scheduler runs as system—all classes are executed, whether or not the user has permission to execute the class.
How to avoid heap size limit in apex?
// Perform SOQL query outside of the for loop. // This SOQL query runs once for all items in Trigger.new. Use SOQL for loops to operate on records in batches of 200. This helps avoid the heap size limit of 6 MB.
Why are there run time limits in apex?
Because resources are shared in a multitenant platform, the Apex runtime engine enforces some limits to ensure that no one transaction monopolizes shared resources. Your Apex code must execute within these predefined execution limits. If a governor limit is exceeded, a run-time exception that can’t be handled is thrown.
Which is an example of a bulkified code?
Bulkification Example: Let’s analyze the governor limit for DML statements. This code is not bulkified and will go over the 150 DML statements limit: insert t; // You’ll get an error after the 150th opp! This code is bulkified and will not hit any governor limits.