perf: pace camera health probes

Author: hoangsvit

.github/scripts/check-camera-health.mjs

@@ -4,6 +4,7 @@ const PROXY_BASE = process.env.CAMERA_PROXY_URL || "https://camera-proxy.eplus.d
 const ORIGIN = process.env.CAMERA_PROXY_ORIGIN || "https://eplus.dev"
 const CONCURRENCY = Number(process.env.CAMERA_HEALTH_CONCURRENCY || 12)
 const TIMEOUT_MS = Number(process.env.CAMERA_HEALTH_TIMEOUT_MS || 6000)
+const DELAY_MS = Number(process.env.CAMERA_HEALTH_DELAY_MS || 250)
 const OFFLINE_AFTER = Number(process.env.CAMERA_HEALTH_OFFLINE_AFTER || 2)
 const PREVIOUS_URL =
   process.env.CAMERA_HEALTH_PREVIOUS_URL ||
@@ -164,6 +165,9 @@ async function mapLimit(items, concurrency, mapper) {
       const index = cursor++
       if (index >= items.length) return
       results[index] = await mapper(items[index], index)
+      if (DELAY_MS > 0) {
+        await new Promise((resolve) => setTimeout(resolve, DELAY_MS))
+      }
     }
   }
 
@@ -244,6 +248,7 @@ async function main() {
     checker: {
       concurrency: CONCURRENCY,
       timeoutMs: TIMEOUT_MS,
+      delayMs: DELAY_MS,
       offlineAfterConsecutiveFailures: OFFLINE_AFTER,
     },
     ...summary,