Module lettuce.core

Package io.lettuce.core.metrics

Interface CommandLatencyRecorder

All Known Subinterfaces:

CommandLatencyCollector

All Known Implementing Classes:

DefaultCommandLatencyCollector, MicrometerCommandLatencyRecorder

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface CommandLatencyRecorder

Interface defining a method to collect command latency metrics based upon command completion. Command latencies are collected per connection (identified by local/remote tuples of SocketAddresses) and command type.

Since:

6.0

Author:

Mark Paluch

Method Summary

Modifier and Type	Method	Description
static CommandLatencyRecorder	disabled()	Returns a disabled no-op CommandLatencyRecorder.
default boolean	isEnabled()	Returns true if the metric collector is enabled.
void	recordCommandLatency(SocketAddress local, SocketAddress remote, ProtocolKeyword commandType, long firstResponseLatency, long completionLatency)	Record the command latency per connectionPoint and commandType.

Method Details

disabled

static CommandLatencyRecorder disabled()

Returns a disabled no-op CommandLatencyRecorder.

Returns:

a disabled CommandLatencyRecorder.

recordCommandLatency

void recordCommandLatency(SocketAddress local,
SocketAddress remote,
ProtocolKeyword commandType,
long firstResponseLatency,
long completionLatency)

Record the command latency per connectionPoint and commandType.

Parameters:

local - the local address

remote - the remote address

commandType - the command type

firstResponseLatency - latency value in TimeUnit.NANOSECONDS from send to the first response

completionLatency - latency value in TimeUnit.NANOSECONDS from send to the command completion

isEnabled

default boolean isEnabled()

Returns true if the metric collector is enabled.

Returns:

true if the metric collector is enabled