Shopify · AbdulRahmanAlHamali · Nov 13, 2025 · AbdulRahmanAlHamali · Nov 13, 2025
diff --git a/experiments/experiments/experiment_one_of_many_services_degradation.rb b/experiments/experiments/experiment_one_of_many_services_degradation.rb
@@ -9,7 +9,7 @@
 
 runner = Semian::Experiments::CircuitBreakerExperimentRunner.new(
   experiment_name: "One of Many Services Degradation Experiment",
-  resource_name: "protected_service",
+  resource_name: "protected_service_one_of_many_services_degradation",
   degradation_phases: [Semian::Experiments::DegradationPhase.new(healthy: true)] * 1 +
                       [Semian::Experiments::DegradationPhase.new(latency: 4.95)] * 10 + # Most requests to the target service will timeout
                       [Semian::Experiments::DegradationPhase.new(healthy: true)] * 3,

diff --git a/experiments/experiments/experiment_one_of_many_services_degradation_adaptive.rb b/experiments/experiments/experiment_one_of_many_services_degradation_adaptive.rb
@@ -9,7 +9,7 @@
 
 runner = Semian::Experiments::CircuitBreakerExperimentRunner.new(
   experiment_name: "One of Many Services Degradation Experiment",
-  resource_name: "protected_service_adaptive",
+  resource_name: "protected_service_one_of_many_services_degradation_adaptive",
   degradation_phases: [Semian::Experiments::DegradationPhase.new(healthy: true)] * 1 +
                       [Semian::Experiments::DegradationPhase.new(latency: 4.95)] * 10 + # Most requests to the target service will timeout
                       [Semian::Experiments::DegradationPhase.new(healthy: true)] * 3,

diff --git a/experiments/experiments/experiment_slow_query.rb b/experiments/experiments/experiment_slow_query.rb
@@ -9,7 +9,7 @@
 
 runner = Semian::Experiments::CircuitBreakerExperimentRunner.new(
   experiment_name: "Slow Query Experiment",
-  resource_name: "protected_service",
+  resource_name: "protected_service_slow_query",
   degradation_phases: [Semian::Experiments::DegradationPhase.new(healthy: true)] * 1 +
                       [Semian::Experiments::DegradationPhase.new(specific_endpoint_latency: 9.5)] * 10 + # This should lead the service to get overwhelmed and start rejecting requests
                       [Semian::Experiments::DegradationPhase.new(healthy: true)] * 3,

diff --git a/experiments/experiments/experiment_slow_query_adaptive.rb b/experiments/experiments/experiment_slow_query_adaptive.rb
@@ -9,7 +9,7 @@
 
 runner = Semian::Experiments::CircuitBreakerExperimentRunner.new(
   experiment_name: "Slow Query Experiment (Adaptive)",
-  resource_name: "protected_service",
+  resource_name: "protected_service_slow_query_adaptive",
   degradation_phases: [Semian::Experiments::DegradationPhase.new(healthy: true)] * 1 +
                       [Semian::Experiments::DegradationPhase.new(specific_endpoint_latency: 9.5)] * 10 + # This should lead the service to get overwhelmed and start rejecting requests
                       [Semian::Experiments::DegradationPhase.new(healthy: true)] * 3,

diff --git a/experiments/results/duration_graphs/duration-gradual_increase.png b/experiments/results/duration_graphs/duration-gradual_increase.png
diff --git a/experiments/results/duration_graphs/duration-gradual_increase_adaptive.png b/experiments/results/duration_graphs/duration-gradual_increase_adaptive.png
diff --git a/...s/results/duration_graphs/duration-one_of_many_services_latency_degradation.png b/...s/results/duration_graphs/duration-one_of_many_services_latency_degradation.png
diff --git a/.../duration_graphs/duration-one_of_many_services_latency_degradation_adaptive.png b/.../duration_graphs/duration-one_of_many_services_latency_degradation_adaptive.png
diff --git a/experiments/results/duration_graphs/duration-oscillating_errors.png b/experiments/results/duration_graphs/duration-oscillating_errors.png
diff --git a/experiments/results/duration_graphs/duration-oscillating_errors_adaptive.png b/experiments/results/duration_graphs/duration-oscillating_errors_adaptive.png
diff --git a/experiments/results/duration_graphs/duration-slow_query.png b/experiments/results/duration_graphs/duration-slow_query.png
diff --git a/experiments/results/duration_graphs/duration-slow_query_adaptive.png b/experiments/results/duration_graphs/duration-slow_query_adaptive.png
diff --git a/experiments/results/duration_graphs/duration-sudden_error_spike_100.png b/experiments/results/duration_graphs/duration-sudden_error_spike_100.png
diff --git a/experiments/results/duration_graphs/duration-sudden_error_spike_100_adaptive.png b/experiments/results/duration_graphs/duration-sudden_error_spike_100_adaptive.png
diff --git a/experiments/results/duration_graphs/duration-sudden_error_spike_20.png b/experiments/results/duration_graphs/duration-sudden_error_spike_20.png
diff --git a/experiments/results/duration_graphs/duration-sudden_error_spike_20_adaptive.png b/experiments/results/duration_graphs/duration-sudden_error_spike_20_adaptive.png
diff --git a/experiments/results/duration_graphs/duration-sudden_error_spikes.png b/experiments/results/duration_graphs/duration-sudden_error_spikes.png
diff --git a/experiments/results/duration_graphs/duration-sudden_error_spikes_adaptive.png b/experiments/results/duration_graphs/duration-sudden_error_spikes_adaptive.png
diff --git a/experiments/results/duration_graphs/duration-sustained_load.png b/experiments/results/duration_graphs/duration-sustained_load.png
diff --git a/experiments/results/duration_graphs/duration-sustained_load_adaptive.png b/experiments/results/duration_graphs/duration-sustained_load_adaptive.png
diff --git a/experiments/results/main_graphs/gradual_increase.png b/experiments/results/main_graphs/gradual_increase.png
diff --git a/experiments/results/main_graphs/gradual_increase_adaptive.png b/experiments/results/main_graphs/gradual_increase_adaptive.png
diff --git a/experiments/results/main_graphs/one_of_many_services_latency_degradation.png b/experiments/results/main_graphs/one_of_many_services_latency_degradation.png
diff --git a/...ments/results/main_graphs/one_of_many_services_latency_degradation_adaptive.png b/...ments/results/main_graphs/one_of_many_services_latency_degradation_adaptive.png
diff --git a/experiments/results/main_graphs/oscillating_errors.png b/experiments/results/main_graphs/oscillating_errors.png
diff --git a/experiments/results/main_graphs/oscillating_errors_adaptive.png b/experiments/results/main_graphs/oscillating_errors_adaptive.png
diff --git a/experiments/results/main_graphs/slow_query.png b/experiments/results/main_graphs/slow_query.png
diff --git a/experiments/results/main_graphs/slow_query_adaptive.png b/experiments/results/main_graphs/slow_query_adaptive.png
diff --git a/experiments/results/main_graphs/sudden_error_spike_100.png b/experiments/results/main_graphs/sudden_error_spike_100.png
diff --git a/experiments/results/main_graphs/sudden_error_spike_100_adaptive.png b/experiments/results/main_graphs/sudden_error_spike_100_adaptive.png
diff --git a/experiments/results/main_graphs/sudden_error_spike_20.png b/experiments/results/main_graphs/sudden_error_spike_20.png
diff --git a/experiments/results/main_graphs/sudden_error_spike_20_adaptive.png b/experiments/results/main_graphs/sudden_error_spike_20_adaptive.png
diff --git a/experiments/results/main_graphs/sudden_error_spikes.png b/experiments/results/main_graphs/sudden_error_spikes.png
diff --git a/experiments/results/main_graphs/sudden_error_spikes_adaptive.png b/experiments/results/main_graphs/sudden_error_spikes_adaptive.png
diff --git a/experiments/results/main_graphs/sustained_load.png b/experiments/results/main_graphs/sustained_load.png
diff --git a/experiments/results/main_graphs/sustained_load_adaptive.png b/experiments/results/main_graphs/sustained_load_adaptive.png
diff --git a/experiments/results/throughput_graphs/throughput-gradual_increase.png b/experiments/results/throughput_graphs/throughput-gradual_increase.png
diff --git a/experiments/results/throughput_graphs/throughput-gradual_increase_adaptive.png b/experiments/results/throughput_graphs/throughput-gradual_increase_adaptive.png
diff --git a/...sults/throughput_graphs/throughput-one_of_many_services_latency_degradation.png b/...sults/throughput_graphs/throughput-one_of_many_services_latency_degradation.png
diff --git a/...oughput_graphs/throughput-one_of_many_services_latency_degradation_adaptive.png b/...oughput_graphs/throughput-one_of_many_services_latency_degradation_adaptive.png
diff --git a/experiments/results/throughput_graphs/throughput-oscillating_errors.png b/experiments/results/throughput_graphs/throughput-oscillating_errors.png
diff --git a/experiments/results/throughput_graphs/throughput-oscillating_errors_adaptive.png b/experiments/results/throughput_graphs/throughput-oscillating_errors_adaptive.png
diff --git a/experiments/results/throughput_graphs/throughput-slow_query.png b/experiments/results/throughput_graphs/throughput-slow_query.png
diff --git a/experiments/results/throughput_graphs/throughput-slow_query_adaptive.png b/experiments/results/throughput_graphs/throughput-slow_query_adaptive.png
diff --git a/experiments/results/throughput_graphs/throughput-sudden_error_spike_100.png b/experiments/results/throughput_graphs/throughput-sudden_error_spike_100.png
diff --git a/...iments/results/throughput_graphs/throughput-sudden_error_spike_100_adaptive.png b/...iments/results/throughput_graphs/throughput-sudden_error_spike_100_adaptive.png
diff --git a/experiments/results/throughput_graphs/throughput-sudden_error_spike_20.png b/experiments/results/throughput_graphs/throughput-sudden_error_spike_20.png
diff --git a/...riments/results/throughput_graphs/throughput-sudden_error_spike_20_adaptive.png b/...riments/results/throughput_graphs/throughput-sudden_error_spike_20_adaptive.png
diff --git a/experiments/results/throughput_graphs/throughput-sudden_error_spikes.png b/experiments/results/throughput_graphs/throughput-sudden_error_spikes.png
diff --git a/experiments/results/throughput_graphs/throughput-sudden_error_spikes_adaptive.png b/experiments/results/throughput_graphs/throughput-sudden_error_spikes_adaptive.png
diff --git a/experiments/results/throughput_graphs/throughput-sustained_load.png b/experiments/results/throughput_graphs/throughput-sustained_load.png
diff --git a/experiments/results/throughput_graphs/throughput-sustained_load_adaptive.png b/experiments/results/throughput_graphs/throughput-sustained_load_adaptive.png
diff --git a/lib/semian.rb b/lib/semian.rb
@@ -317,7 +317,7 @@ def create_adaptive_circuit_breaker(name, **options)
     AdaptiveCircuitBreaker.new(
       name: name,
       kp: 0.75, # Standard proportional gain
-      ki: 0.01, # Moderate integral gain
+      ki: 0.1, # Moderate integral gain
       kd: 0.5, # Small derivative gain (as per design doc)
       window_size: 10, # 10-second window for rate calculation and update interval
       initial_history_duration: 900, # 15 minutes of initial history for p90 calculation