fix: balancing act for subscription (#224) #535

Job	Run time
NAT-ted Environments	1m 16s
Main (7.0, 3.2)	52s
Main (7.0, 3.2, compose.ssl.yaml)	1m 7s
Main (7.0, 3.2, hiredis)	45s
Main (7.0, 3.2, hiredis, compose.ssl.yaml)	1m 15s
Main (7.0, 3.2, 2, compose.replica.yaml)	1m 5s
Main (7.0, 3.2, compose.auth.yaml)	51s
Main (6.2, 3.1)	54s
Main (6.2, 3.0)	49s
Main (5.0, 2.7)	1m 6s
Main (jruby)	1m 47s
Main (truffleruby)	1m 42s
Main (test_cluster_state, 7.0, 2, compose.replica.yaml)	3m 22s
Main (test_cluster_state, 6.2, 2, compose.replica.yaml)	3m 11s
Main (test_cluster_broken, 7.0, no)	2m 19s
Main (test_cluster_broken, 6.2, no)	2m 13s
Main (test_cluster_scale, 7.0, compose.scale.yaml)	2m 2s
Main (test_cluster_scale, 6.2, compose.scale.yaml)	2m 2s
Benchmark	3m 3s
Lint	10s
Massive Cluster	2m 53s
Profiling (single)	34s
Profiling (excessive_pipelining)	52s
Profiling (pipelining_in_moderation)	44s
	36m 54s

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