IVersioned

Description

The IVersioned interface allows you to define data objects that can be versioned.

Important points

• Versioning is often used as an optimistic concurrency mechanism.
• The version doesn’t have to be a number, but it is recommended to use sequential values to determine if one object has a newer or older version than another one.
• It is common to use the time of change as the object version.

Fields

Examples

		type MyStruct struct {
			...
			version string
		}

		func (c *MyStruct) GetVersion() string {
			return c.version
		}
		func (c *MyStruct) SetVersion(version string) {
			c.version = version
		}
		func (c *MyStruct) UpdateData(ctx context.Context, item: MyData) {
			if (item.version < oldItem.version) {
				panic("VERSION_CONFLICT")
			}
		}