841add4f27
The Valkey transport layer used 100ms busy-polling loops (Task.Delay(100)) across ~90 concurrent loops in 45+ services, generating ~900 idle commands/sec and burning ~58% CPU while the system was completely idle. Replace polling with Redis Pub/Sub notifications: - Publishers fire PUBLISH after each XADD (fire-and-forget) - Consumers SUBSCRIBE and wait on SemaphoreSlim with 30s fallback timeout - Applies to both ValkeyMessageQueue (INotifiableQueue) and ValkeyEventStream - Non-Valkey transports fall back to 1s polling via QueueWaitExtensions Increase heartbeat interval from 10s to 45s across all transport options, with corresponding health threshold adjustments (stale: 135s, degraded: 90s). Expected idle CPU reduction: ~58% → ~3-5%. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
39 lines
1.3 KiB
C#
39 lines
1.3 KiB
C#
namespace StellaOps.Router.Gateway.Configuration;
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/// <summary>
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/// Configuration options for health monitoring.
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/// </summary>
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public sealed class HealthOptions
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{
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/// <summary>
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/// Gets the configuration section name.
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/// </summary>
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public const string SectionName = "Router:Health";
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/// <summary>
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/// Gets or sets the threshold after which a connection is considered stale (no heartbeat).
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/// Should be at least 3x the heartbeat interval (45s default).
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/// Default: 135 seconds.
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/// </summary>
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public TimeSpan StaleThreshold { get; set; } = TimeSpan.FromSeconds(135);
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/// <summary>
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/// Gets or sets the threshold after which a connection is considered degraded.
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/// Should be at least 2x the heartbeat interval (45s default).
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/// Default: 90 seconds.
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/// </summary>
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public TimeSpan DegradedThreshold { get; set; } = TimeSpan.FromSeconds(90);
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/// <summary>
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/// Gets or sets the interval at which to check for stale connections.
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/// Default: 15 seconds.
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/// </summary>
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public TimeSpan CheckInterval { get; set; } = TimeSpan.FromSeconds(15);
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/// <summary>
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/// Gets or sets the number of ping measurements to keep for averaging.
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/// Default: 10.
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/// </summary>
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public int PingHistorySize { get; set; } = 10;
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}
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