com.netflix.concurrency.limits

Interface Limit

All Known Implementing Classes:

AIMDLimit, FixedLimit, GradientLimit, SettableLimit, VegasLimit

public interface Limit

Contract for an algorithm that calculates a concurrency limit based on rtt measurements

Method Summary

Modifier and Type	Method and Description
void	drop() The request failed and was dropped due to being rejected by an external limit or hitting a timeout.
int	getLimit()
void	update(long rtt, int maxInFlight) Update the concurrency limit using a new rtt sample

Method Detail

getLimit

int getLimit()

Returns:

Current estimated limit

update

void update(long rtt,
            int maxInFlight)

Update the concurrency limit using a new rtt sample

Parameters:

rtt - Minimum RTT sample for the last window

maxInFlight - Maximum number of inflight requests observed in the sampling window

drop

void drop()

The request failed and was dropped due to being rejected by an external limit or hitting a timeout. Loss based implementations will likely reduce the limit aggressively when this happens.