Thread by @AlagarasanWDev

Data virtualization: With Proxies in JavaScript.

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Data virtualization using Proxies in JavaScript refers to the ability to create virtualized data structures, such as virtualized arrays, that load their data on demand rather than loading all data at once.

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This can be useful for improving the performance of an application when working with large data sets.

In this Eg., we create a VirtualArray class that takes in two args- the length of the array & a loader function.

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The loader function is called whenever an item is accessed in the array.

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We then use the Proxy object to intercept the get operation and check if the index is within the length of the array, if it is, it calls the loader function and returns the value, otherwise, it returns undefined.

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This approach can be useful for situations where you need to work with large data sets that cannot be loaded entirely into memory at once.

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By virtualizing the data, you can load only the data that is currently needed, improving the performance and memory usage of your application.

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Let me know in the comments if you have any questions.

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