eloquent performance acting up again?

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Zola Okafor Author
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1 week ago Asked
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2 Replies
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hey folks, after finally squashing that tricky relation bug we talked about last week, my app decided to throw a new tantrum. now pages are super slow, like it's trying to load the entire internet.

it seems certain eloquent queries, especially on one of my main list pages, are just taking ages to resolve. it's like watching paint dry, but with database calls.

[2023-10-27 10:30:01] local.INFO: SQL query executed: SELECT * FROM `products` WHERE `status` = 'active' AND `category_id` IN (1, 2, 3) AND `price` BETWEEN 10 AND 100 ORDER BY `created_at` DESC LIMIT 50 OFFSET 0 -- Time: 1540ms
[2023-10-27 10:30:02] local.INFO: SQL query executed: SELECT COUNT(*) FROM `products` WHERE `status` = 'active' AND `category_id` IN (1, 2, 3) AND `price` BETWEEN 10 AND 100 -- Time: 890ms
[2023-10-27 10:30:03] local.INFO: SQL query executed: SELECT `id`, `name` FROM `users` WHERE `id` IN (1, 2, 3, ...) -- Time: 320ms (for eager loading?)

anyone got any quick wins for improving eloquent performance without needing a full-blown refactor right now? i'm open to all suggestions!

thanks in advance!

2 Answers

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Zayn Mahmoud
Answered 6 days ago

Hello Zola Okafor,

Ah, the classic "just fixed one bug, now another one's here to party" scenario. It's truly one of the more delightful aspects of development, isn't it? Watching those database calls drag on can be incredibly frustrating, but thankfully, there are usually some quick wins for Laravel Eloquent performance optimization without needing to tear everything down.

Based on your query logs, those `products` table queries are definitely the prime suspects for your current page load issues. Here are a few practical steps you can take to improve your database query performance:

  • Add Database Indexes: This is almost always the first thing to check for slow `SELECT` queries. For your `products` query, you should create indexes on the columns used in your `WHERE` clauses and `ORDER BY` clauses. Specifically, consider adding indexes to `status`, `category_id`, `price`, and `created_at`. A composite index like `(status, category_id, price, created_at)` could be highly effective for that main `products` query. You can add these via Laravel migrations.
  • Eager Loading to Prevent N+1: Your `users` query time hints at the classic N+1 problem, especially if it's being run repeatedly for each product. If your products have a related user (e.g., `product->user`), make sure you're eager loading that relationship using `with('user')` on your product query. This fetches all related users in a single query instead of one query per product.
  • Select Only Necessary Columns: Instead of `SELECT *`, use `select('id', 'name', 'price', 'status', ...)` to explicitly specify the columns you need. Retrieving fewer columns reduces the amount of data transferred and processed, which can offer a small but cumulative performance boost, especially on wide tables.
  • Query Caching: For data that doesn't change frequently but is accessed often (like product categories, or perhaps even the paginated product list itself for a short period), consider implementing query caching. Laravel's `Cache` facade or Eloquent's `remember()` method can significantly speed up subsequent requests by serving data from memory rather than hitting the database every time.
  • Utilize Laravel Debugbar: If you haven't already, install Laravel Debugbar. It's an invaluable tool for real-time insights into your application's performance, showing you all executed queries, their timings, and memory usage directly in your browser. It makes identifying slow queries and N+1 issues much easier.

Start with indexing and eager loading; those typically provide the most significant gains for the kind of performance hit you're seeing. Did this strategy help you address the current slowdown?

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Zola Okafor
Answered 6 days ago

Implemented the indexes and eager loading, and it definitely helped, but I'm still seeing some significant slowdowns when more than two filters are applied on the main product list.

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