The Fix For Your Database Performance Issues in .NET

Summary

In this video, Nick demonstrates a simple yet powerful way to enhance database performance in .NET applications using the Delta package. By integrating Delta, which leverages browser-level caching through E-tags and 304 responses, the system reduces database query times from seconds to milliseconds. The solution is based on adding a 'Row Version' column to track data changes efficiently, improving read-heavy scenarios. This non-invasive approach offers a significant performance boost without major changes to the code, making it an invaluable tool for developers dealing with large datasets and complex queries.

Takeaways

• 😀 Delta is a simple, non-invasive package that improves database performance by caching data at the browser level using ETags and the 304 HTTP status code.
• 😀 To integrate Delta, you only need to install the package and configure it by adding a row version column in the database to track changes.
• 😀 Delta works by hijacking the SQL connection and checking if the data has changed by comparing the row version column; if not, it returns cached data, reducing the number of database queries.
• 😀 Delta's caching mechanism significantly improves performance for read-heavy scenarios by reducing the time it takes to load data (e.g., from 1 second to 3 milliseconds).
• 😀 The solution uses a combination of SQL server and browser-side caching, leveraging built-in HTTP features like ETags and conditional GET requests to avoid unnecessary data reloads.
• 😀 The first time a request is made, it might take longer (e.g., 1 second) to fetch data, but subsequent requests are fast (e.g., 2-3 milliseconds) due to the 304 caching response.
• 😀 You can apply Delta to specific API endpoints or globally, and even customize caching behavior using the 'should execute' method to target specific request paths.
• 😀 Delta supports transactions and works with Entity Framework Core, allowing developers to seamlessly integrate it with existing systems and workflows.
• 😀 The system is highly customizable, and the caching logic can be tailored to your needs, such as applying Delta only to certain data or specific HTTP request conditions.
• 😀 Delta is an open-source project by Simon Crop, and it also pairs with a client-side solution called Replicant, which provides similar caching behavior for HTTP requests made through an HTTP client.

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