Optimizing JS Config Objects with BigInts: An Experiment
2025-09-25
To optimize serialization, comparison, and update operations on a large number of configuration objects, the author experimented with using JavaScript's BigInt type to store configuration data. By packing multiple configuration fields into a single BigInt and using bitwise operations for efficient read and write operations, the author achieved a compact memory representation and fast serialization/deserialization. However, this approach also has some drawbacks, such as the need to manually manage field bit widths and offsets, and the performance issues of BigInt bitwise operations. The author is currently still evaluating the practical effect of this method and plans to update the article in the future.
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