Eager loading, which is the contrasting development term to lazy loading, means loading all the data you need ahead of time (rather than loading related data only when accessed).
For example, registered guests have associated reservations. When the hotel staff search for a guest (from the database or back end), you can eager load all the reservations as well.
Eager loading everything can; slow down queries and increase memory usage, so tests should verify that only the required relationships (reservations) are loaded.
Advantages and disadvantages from https://wolf-of-seo.de/en/what-is/eager-loading/
Eager loading offers several advantages that can significantly improve the efficiency and performance of a website:
For example, registered guests have associated reservations. When the hotel staff search for a guest (from the database or back end), you can eager load all the reservations as well.
Eager loading everything can; slow down queries and increase memory usage, so tests should verify that only the required relationships (reservations) are loaded.
Advantages and disadvantages from https://wolf-of-seo.de/en/what-is/eager-loading/
Eager loading offers several advantages that can significantly improve the efficiency and performance of a website:
- Reduction of queries to the database: Through the eager loading all required data is loaded in a single query. This avoids multiple database queries, which significantly reduces the server load.
- Accelerated loading times: As fewer database queries are required, the response time of the website considerably. This leads to faster loading times and a better user experience.
- Improved scalability: By reducing database queries, the site is better able to handle larger amounts of data and remain scalable even as the number of users increases.
- Better performance for complex queries: If complex queries with many relationships between tables need to be performed, you can use eager loading to improve performance by loading all the required data at once.
Eager loading also has some disadvantages that you should be aware of and test for:
- Possible performance: Eager loading can lead to an increased memory and processing load, since data must be loaded and cached in advance. If the amount of data is very large, this can negatively affect the performance of the application.
- Data inconsistency: In some cases, the eager loading lead to data inconsistencies. For example, if changes are made in a relation after the data has already been loaded, inconsistencies may occur between the already loaded data and the updated data.
- Complexity: Implementing eager loading can be more complex than simply loading individual data. It requires a deeper understanding of the database structure and the relationships between entities.
