𝗦𝘁𝗼𝗽 𝗡+𝟭 𝗔𝘃𝗮𝗹𝗮𝗻𝗰𝗵𝗲𝘀: 𝗘𝗻𝗳𝗼𝗿𝗰𝗲 𝗟𝗮𝗿𝗮𝘃𝗲𝗹 𝗦𝘁𝗿𝗶𝗰𝘁 𝗠𝗼𝗱𝗲

𝗦𝘁𝗼𝗽 𝗡+𝟭 𝗔𝘃𝗮𝗹𝗮𝗻𝗰𝗵𝗲𝘀: 𝗘𝗻𝗳𝗼𝗿𝗰𝗲 𝗟𝗮𝗿𝗮𝘃𝗲𝗹 𝗦𝘁𝗿𝗶𝗰𝘁 𝗠𝗼𝗱𝗲

The N+1 query problem kills database performance. It happens when you fetch a list of records and loop through them to access a relationship. You forgot to load that relationship early.

Suppose you show 50 invoices on a dashboard. You loop through them to show the client name. You forgot to use the with method. Eloquent runs 1 query for the invoices. Then it runs 50 separate queries for each client.

In local development, 51 queries take 10 milliseconds. You will not notice it. In production, heavy traffic turns this into an avalanche. It exhausts your database connection pool and crashes your server.

You cannot rely on code reviews alone. You need an architectural guardrail.

Laravel offers Strict Mode to solve this. You can use preventLazyLoading at the application level. Laravel will monitor your database relationships. If it detects a lazy load during local development or testing, it throws an exception. This forces you to fix the code immediately.

How to set this up:

Configure the safety mechanism in your AppServiceProvider. Do this for local and testing environments. In production, you should log the error instead of crashing the app.

Use these three settings in your boot method:

• Model::preventLazyLoading: Stops N+1 queries.
• Model::preventSilentlyDiscardingAttributes: Stops mass assignment failures.
• Model::preventAccessingMissingAttributes: Stops memory leaks from missing relationships.

For production, use handleLazyLoadingViolationUsing. This allows you to log violations to Slack or a logging service. You get visibility without breaking the user experience.

Enforcing Strict Mode moves optimization to the start of your pipeline. N+1 queries cannot pass through your tests. Your codebase stays optimized. Your database stays fast.

Source: https://dev.to/iprajapatiparesh/stop-n1-avalanches-enforce-laravel-strict-mode-2oop