configurable health check duration

crates/service/web/storyteller_web/src/main.rs

@@ -293,6 +293,9 @@ async fn main() -> AnyhowResult<()> {
 
   let twitch_secrets = TwitchSecrets::from_env()?;
 
+  let health_check_interval = easyenv::get_env_duration_seconds_or_default(
+    "HEALTH_CHECK_INTERVAL_SECS", Duration::from_secs(3));
+
   let static_api_token_set = read_static_api_tokens();
 
   // Background jobs.
@@ -308,8 +311,12 @@ async fn main() -> AnyhowResult<()> {
 
   info!("Spawning DB health checker thread.");
 
-  tokio_runtime.spawn(async {
-    db_health_checker_thread(health_check_status2, mysql_pool3).await;
+  tokio_runtime.spawn(async move {
+    db_health_checker_thread(
+      health_check_status2,
+      mysql_pool3,
+      health_check_interval,
+    ).await;
   });
 
   info!("Spawning IP ban polling thread.");

crates/service/web/storyteller_web/src/threads/db_health_checker_thread/db_health_checker_thread.rs

@@ -12,6 +12,7 @@ use std::time::Duration;
 pub async fn db_health_checker_thread(
   health_check_status: HealthCheckStatus,
   mysql_pool: MySqlPool,
+  check_duration: Duration,
 ) {
   loop {
     debug!("Checking DB health...");
@@ -32,7 +33,7 @@ pub async fn db_health_checker_thread(
       }
     }
 
-    thread::sleep(Duration::from_millis(3_000));
+    thread::sleep(check_duration);
   }
 
   warn!("Should never happen: Health Checker Exits");