Timestamp is an important dimension in database (whether structured or semi-structured, unstructured), so how to decide what type of timestamp is.
The pros and cons of timestamp types
| Advantage | disadvantage | |
|---|---|---|
| long (unix timestamp) | low storage space easy to calculate High processing efficiency |
Data is not intuitive need to be converted when displayed |
| Text type (various Formats) | Data is intuitive and easy to read The positioning problem is that no additional coding is required Can be directly used as display (space for time) |
Large storage space Inconvenient to do rule calculation Inefficient text processing |
To sum up: when the background algorithm processes the scene, in order to save space, we tend to suggest that you use the long integer type;
When used to interact with the interface, and when there is enough space, I tend to recommend that you use the text type.