Throttling functions-Edge Security Acceleration(ESA)-阿里云帮助中心

This topic describes the syntax, parameters, return values, and examples for throttling functions.

limit_rate_after

Item	Description
Syntax	`limit_rate_after(n, unit)`
Description	Specifies the amount of data to transfer before rate limiting begins. Note This function applies to an individual request and is not a global bandwidth limit.
Parameters	`unit`: An integer. If you do not specify the parameter, the default unit is bytes. `unitKMG`: A char. Valid values are , , or . The values are case-insensitive.
Return value	`truefalse`Returns on success or on failure.
Examples	`limit_rate_after(10, 'k') limit_rate(1, 'm') // After the first 10 KB is transferred, the rate is limited to 1 MB/s.`

Item	Description
Syntax	`limit_rate(n, unit)`
Description	Sets the data transfer rate limit. The minimum rate is 4 KB/s. If you specify a rate lower than 4 KB/s, the limit defaults to 4 KB/s. Note This function applies to an individual request and is not a global bandwidth limit.
Parameters	`unit`: An integer. If you do not specify the parameter, the default unit is bytes/s. `unitKMG`: A char. Valid values are , , or . The values are case-insensitive.
Return value	`truefalse`Returns on success or on failure.
Examples	`limit_rate(500, 'k') // Limits the data transfer rate to 500 KB/s.`