Measuring the amount of data read and specially written is another important aspect of good performance. To get started, you can start paying attention at the amount of logical and physical memory used per second by your app.

I/O throughput and latency can vary a lot depending on the device hardware. Many apps use storage or databases such as SQLite for local assets. SQLite is highly optimized for efficient access and it’s a good idea to rely on it when writing and updating existing content.

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