Date Path Format for Stored Uploaded Files

Date Path Format for Stored Uploaded Files

Background

In some application scenarios, we need to save uploaded files to specific date paths for easy management and querying.

The time format is based on the common Go language practice of time.Time.Format(layout string). If you know Go, you can ignore the following content.

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Core Concepts

The fixed reference time 2006-01-02 15:04:05 defines the format, with the numerical sequence corresponding to:

• 2006 → Year
• 01 → Month
• 02 → Day
• 15 → Hour (24-hour format)
• 04 → Minute
• 05 → Second
• .000 → Milliseconds (or .999 for microseconds)

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Examples

Custom Formats

Common Layout Symbol Table

Format Description	Format String	Actual Generated Date Path
Store by Year/Month/Day	"2006/01/02/"	2025/08/15/
Filename with Timestamp	"20060102_150405"	20250815_143045
Time with Milliseconds	"2006-01-02_15-04-05.000"	2025-08-15_14-30-45.123
12-Hour Format with AM/PM	"2006-01-02_03-04-05PM"	2025-08-15_02-30-45PM