Trigger best practices in Salesforce | What are the best practices for Apex Trigger in Salesforce

Trigger perform automatically when DML (Insert, Update, Delete) operation occur on Object, It does perform custome and standard object as well.

A common development pitfall is the assumption that trigger invocations never include more than one record. Apex triggers are optimized to operate in bulk, which, by definition, requires developers to write logic that supports bulk operations.

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If we need to write a trigger on sObject we should be keep in mind as following things:-

• One Trigger Per Object:- There should only be one trigger for each object.
• Complex logic:- Avoid complex logic in triggers. we should write Apex classes only actual execution logic.
• Helper Class:- Bulkify any "helper" classes and/or methods. We can create multiple method in one helper trigger.
• Bulkified:- Trigers should be "bulkified" and be able to process up to 200 records for each call.
• Use Collections:- Execute DML statements using collections instead of individual records per DML statem
• Single Query:- Use Collections in SOQL "WHERE" clauses to retrieve all records back in single query.
• Naming Convention:- Use a consistent naming convention including the object name (e.g., AccountTrigger)

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