Google Maps API returns two unique keys:
resKey: "A1B2C3D4E5F6",
locKey: "ZYXWVUTSRQP",
Which identifier should be preserved for future reference?
In my experience, the primary difference is that the place_id is a persistent identifier for the location on Google Maps, while the id (or sometimes resKey) tends to be more dynamic, reflecting a particular query or session. When storing data for future reference, I have found that relying on place_id is preferable. It remains consistent even if there are periodic changes in the API. This persistence is essential for ensuring that subsequent fetches refer to the same geographic entity, thereby reducing the risk of data mismatches.
My experience shows that the ‘place_id’ is designed with long-term identification in mind, making it much more reliable when you need to store and later reference a location consistently. The other identifier, often labeled as ‘id’, is typically more volatile and context-dependent, perhaps reflecting the current data query rather than the actual place. In past projects, I observed that using ‘place_id’ avoids potential issues with outdated or changing identifiers, ensuring the integrity of stored location data over time.