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Career/Resources/Packages/Minimal Identity Map for Laravel Eloquent.md

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-https://ollieread.com/articles/a-minimal-identity-map-for-laravel-eloquent
+https://ollieread.com/articles/a-minimal-identity-map-for-laravel-eloquent
+
+Implementation pattern (not a package) that ensures each database row has a unique representation in memory. Multiple queries for the same row return the identical object instance rather than separate copies.
+
+## Problem Solved
+Without an identity map, Eloquent creates multiple instances of the same database row. If you update a User model in one place, changes are not reflected in other places holding a different instance of the same row.
+
+## How It Works
+- Static registry stores model instances mapped by class name and primary key
+- Hooks capture newly queried models via `newFromBuilder()`
+- Freshly created models added via the `created` event
+- Deleted models removed via `deleting`/`forceDeleting` events
+- Subsequent queries update existing instances rather than creating duplicates
+
+#laravel #eloquent #pattern #identity-map #orm #caching #memory