Add ability to client to run other workloads than the connection manager

[adam-fowler]

• Add protocol ActionRunner which runs actions inside discarding task group
• Conform ValkeyClient to ActionRunner
• Add single action runClient which runs a ValkeyNodeClient

[github-actions]

✅ Pull request no significant performance differences ✅

Summary

New baseline 'pull_request' is WITHIN the 'main' baseline thresholds.

Full Benchmark Comparison

Comparing results between 'main' and 'pull_request'

Host '3f15f5b6a4bf' with 4 'x86_64' processors with 15 GB memory, running:
#18~24.04.1-Ubuntu SMP Sat Jun 28 04:46:03 UTC 2025

ValkeyBenchmarks

Client: GET benchmark metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	78	79	80	81	82	82	82	6
pull_request	78	78	80	81	82	82	82	6
Δ	0	-1	0	0	0	0	0	0
Improvement %	0	1	0	0	0	0	0	0

Client: GET benchmark | parallel 20 | 20 concurrent connections metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	93	97	98	101	102	104	104	25
pull_request	91	96	97	100	104	106	106	25
Δ	-2	-1	-1	-1	2	2	2	0
Improvement %	2	1	1	1	-2	-2	-2	0

Connection: GET benchmark metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	4	4	4	4	4	4	4	8
pull_request	4	4	4	4	4	4	4	9
Δ	0	0	0	0	0	0	0	1
Improvement %	0	0	0	0	0	0	0	1

Connection: Pipeline benchmark metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	36	37	37	37	37	37	37	5
pull_request	37	37	37	37	38	38	38	5
Δ	1	0	0	0	1	1	1	0
Improvement %	-3	0	0	0	-3	-3	-3	0

HashSlot – {user}.whatever metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	0	0	0	0	0	0	0	19
pull_request	0	0	0	0	0	0	0	18
Δ	0	0	0	0	0	0	0	-1
Improvement %	0	0	0	0	0	0	0	-1

ValkeyCommandEncoder – Command with 7 words metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	0	0	0	0	0	0	0	753
pull_request	0	0	0	0	0	0	0	739
Δ	0	0	0	0	0	0	0	-14
Improvement %	0	0	0	0	0	0	0	-14

ValkeyCommandEncoder – Simple GET metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	0	0	0	0	0	0	0	1908
pull_request	0	0	0	0	0	0	0	1888
Δ	0	0	0	0	0	0	0	-20
Improvement %	0	0	0	0	0	0	0	-20

ValkeyCommandEncoder – Simple MGET 15 keys metrics

Malloc (total): results within specified thresholds, fold down for details.

Malloc (total) *	p0	p25	p50	p75	p90	p99	p100	Samples
main	0	0	0	0	0	0	0	358
pull_request	0	0	0	0	0	0	0	360
Δ	0	0	0	0	0	0	0	2
Improvement %	0	0	0	0	0	0	0	2

[adam-fowler]

Don't know if the protocol is overkill, but it could also be used for the cluster client

[fabianfett]

Would you mind outlining your motivation for this change? I'm sure this will help me understand this change.

[adam-fowler]

Would you mind outlining your motivation for this change? I'm sure this will help me understand this change.

To support replica discovery, running replicas connection pools and failover/redirect on a standalone client.
Replica support for standalone mode, will probably need a few of the components from your cluster implementation, so I might be breaking a few other pieces of code in the next few weeks.